Exhibit 10.3

EXECUTION VERSION

September 21, 2014

TTM Technologies, Inc.

1665 Scenic Avenue

Suite 250

Costa Mesa, California 92626

Attention: Todd Schull, Chief Financial Officer

Project Vector

Commitment Letter

Ladies and Gentlemen:

You have advised JPMorgan Chase Bank, N.A. (“JPMorgan Chase Bank”), J.P. Morgan Securities LLC (“JPMorgan”) and Barclays Bank PLC (“Barclays”, and together with JPMorgan Chase Bank and JPMorgan, the “Commitment Parties”, “us” or “we”) that TTM Technologies, Inc., a Delaware corporation (“you” or the “Borrower”) intends to acquire, through a merger, the company you have identified to us as “Vector” (the “Target”) and consummate the other transactions described on Exhibit A hereto. Capitalized terms used but not defined herein are used with the meanings assigned to them on the Exhibits attached hereto (such Exhibits, together with this letter, collectively, the “Commitment Letter”).

1. Commitments

In connection with the Transactions, in each case upon the terms and conditions set forth in this letter and Exhibits B, C and D hereto (collectively, the “Term Sheets”):

(a) JPMorgan Chase Bank is pleased to advise you of its several, but not joint, commitment to provide (i) 57% of the aggregate amount of the ABL Facility and (ii) 57% of the aggregate amount of the Term B Facility, and

(b) Barclays (together with JPMorgan Chase Bank, the “Initial Lenders”) is pleased to advise you of its several, but not joint, commitment to provide (i) 43% of the aggregate amount of the ABL Facility and (ii) 43% of the aggregate amount of the Term B Facility.

2. Titles and Roles

It is agreed that:

(a) (i) JPMorgan and Barclays will act as joint lead arrangers and bookrunners for the ABL Facility (acting in such capacities, the “ABL Lead Arrangers”), (ii) JPMorgan Chase Bank will act as sole administrative agent for the ABL Facility (acting in such capacity, the “ABL Administrative Agent”) and (iii) Barclays will act as sole syndication agent for the ABL Facility; and

(b) (i) JPMorgan and Barclays will act as joint lead arrangers and bookrunners for the Term B Facility (acting in such capacities, the “Term Lead Arrangers” and, together with the ABL Lead Arrangers, the “Lead Arrangers”), (ii) JPMorgan Chase Bank will act as sole administrative agent for the Term B Facility (acting in such capacity, the “Term Administrative Agent”) and (iii) Barclays will act as sole syndication agent for the Term B Facility.

It is further agreed that JPMorgan will have “left” placement in any marketing materials or other documentation used in connection with the Credit Facilities and Barclays will have placement immediately to the “right” of JPMorgan in any marketing materials or other documentation used in connection with the Credit Facilities. You agree that no other agents, co-agents, arrangers, co-arrangers, bookrunners, co-bookrunners, managers or co-managers will be appointed, no other titles will be awarded and no compensation (other than that expressly contemplated by the Term Sheets and Fee Letters referred to below) will be paid in connection with the Credit Facilities unless you and we shall so reasonably agree; provided that no later than the date that is 15 business days after the date of your acceptance of this Commitment Letter you may appoint up to three additional co-documentation agents (each an “Additional Agent” and, collectively, the “Additional Agents”) in a manner and with economics determined by you in consultation with the Lead Arrangers (it being understood that, to the extent you appoint an Additional Agent, (v) the commitments of such Additional Agent (and any relevant affiliate) shall be allocated on a pro rata basis across each of the Credit Facilities and the commitments of the Initial Lenders in respect of the Credit Facilities will be reduced by the amount of the commitments of such Additional Agent (and any relevant affiliate), with such reduction allocated to reduce the commitments of the Initial Lenders on a pro rata basis among the Initial Lenders and on a pro rata basis across each of the Credit Facilities, (w) the economics awarded to such Additional Agent shall be in proportion to its commitments in respect of the Credit Facilities, (x) the Commitment Parties (as defined without giving effect to the joinder of any Additional Agent) shall have not less than 70% of the total economics for the Credit Facilities on the Closing Date, (y) no Additional Agent (nor any affiliate thereof) shall receive greater economics in respect of any Credit Facility than that received by any Commitment Party (as defined without giving effect to the joinder of any Additional Agent) together with its affiliates and (z) upon the execution by any Additional Agent (and any relevant affiliate) of customary joinder documentation, each such Additional Agent (and any relevant affiliate) shall thereafter constitute a “Commitment Party” hereunder and it or its relevant affiliate providing such commitment shall constitute an “Initial Lender” hereunder).

3. Syndication

We intend to syndicate the Credit Facilities to a group of lenders identified by us in consultation with you (together with the Initial Lenders, the “Lenders”). The Commitment Parties intend to commence syndication efforts promptly, and you agree actively to assist (and to use your commercially reasonable efforts to cause the Target to actively assist) the Commitment Parties in completing a syndication satisfactory to the Commitment Parties. Such assistance shall include (A) your using commercially reasonable efforts to ensure that the syndication efforts benefit from your, your affiliates’, the Target’s and the Target’s affiliates existing banking relationships (and your using commercially reasonable efforts to ensure the syndication efforts benefit from the Target’s existing banking relationships), (B) direct contact between your senior management and advisors and the proposed Lenders (and using your commercially reasonable efforts to ensure such contact between senior management of the Target and the proposed Lenders), (C) your preparing and providing to the Commitment Parties (and using commercially reasonable efforts, to the extent practical and appropriate and in all instances not in contravention of the Purchase Agreement, to cause the Target to prepare and provide) all information with respect to you and your subsidiaries and the Target and its subsidiaries and the Acquisition, including all financial information and Projections (as defined below), as the Commitment Parties may reasonably request in connection with the arrangement and syndication of the Credit Facilities and your assistance (and using your commercially reasonable efforts to cause the Target to assist) in the preparation of one or

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more confidential information memoranda (each, a “Confidential Information Memorandum”) and other marketing materials to be used in connection with the syndication (all such information, memoranda and material, “Information Materials”), (D) your hosting, with the Commitment Parties, of one or more meetings of prospective Lenders at times and locations to be mutually agreed (and using your commercially reasonable efforts to cause the officers of the Target to be available for such meetings), (E) your using your commercially reasonable efforts to obtain (x) corporate credit and/or corporate family ratings for the Borrower and (y) ratings for the Credit Facilities from each of Moody’s Investors Service, Inc. (“Moody’s”) and Standard & Poor’s Financial Services LLC (“S&P”) as soon as practicable and in any event prior to the commencement of syndication of the Credit Facilities, (F) your ensuring that there is no competing offering, placement, arrangement or syndication of any debt securities (other than as contemplated in the Arranger Fee Letter) or bank financing (other than the Credit Facilities) or announcement thereof by or on behalf of you and your subsidiaries and your using commercially reasonable efforts to ensure that there is no competing offering, placement, arrangement or syndication of any debt securities or bank financing or announcement thereof by or on behalf of the Target and its subsidiaries and (G) using your commercially reasonable efforts to ensure that the ABL Administrative Agent has sufficient access to the Borrower and its subsidiaries and the Target and its subsidiaries to conduct a commercial finance audit examination and appraisal of the inventory of the Borrower and its subsidiaries and the Target and its subsidiaries prior to the Closing Date. Upon the request of any Commitment Party, you will use your commercially reasonable efforts to cause the Target to furnish, for no fee, to such Commitment Party an electronic version of the Target’s and its subsidiaries’ corporate logos for use in marketing materials for the purpose of facilitating the syndication of the Credit Facilities (the “License”); provided, however, that the License shall be used solely for the purpose described above and in a manner that is not intended or reasonably likely to harm, disparage or otherwise adversely affect the Target and its subsidiaries; provided, further, that the License may not be assigned or transferred. Without limiting your obligations to assist with syndication efforts as set forth in this paragraph, we agree that we will not be released from our obligations set forth herein (including our obligation to fund the ABL Facility and the Term B Facility on the terms and conditions set forth in this Commitment Letter) in connection with any syndication or assignment to any Lender unless (A) (i) you have consented to such syndication or assignment in writing (such consent not to be unreasonably withheld or delayed) and (ii) any such Lender has entered into an amendment or joinder with respect to this Commitment Letter committing to provide a portion of the Credit Facilities (in which case our commitments hereunder shall be reduced at such time by an amount equal to the commitment assumed by such Lender) or (B) such Lender shall have entered into the applicable Credit Facilities Documentation and funded the portion of the Credit Facilities required to be funded by it on the Closing Date.

The Lead Arrangers will manage, in consultation with you, all aspects of the syndication, including decisions as to the selection of institutions to be approached and when they will be approached, when commitments will be accepted, which institutions will participate, the allocation of the commitments among the Lenders and the amount and distribution of fees among the Lenders. You hereby acknowledge and agree that the Lead Arrangers will have no responsibility other than to arrange the syndication as set forth herein and in no event shall the Commitment Parties be subject to any fiduciary or other implied duties in connection with the transactions contemplated hereby.

At the request of the Commitment Parties, you agree to assist in the preparation of a version of each Confidential Information Memorandum or other Information Material (a “Public Version”) consisting exclusively of information with respect to you and your affiliates, the Target and its subsidiaries and the Acquisition that is either publicly available or not material with respect to you and your affiliates, the Target and its subsidiaries, any of your or their respective securities or the Acquisition for purposes of United States federal and state securities laws (such information, “Non-MNPI”). Such Public Versions, together with any other information prepared by you or the Target or your or its affiliates or representatives and conspicuously marked “Public” (collectively, the “Public Information”), which at a

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minimum means that the word “Public” will appear prominently on the first page of any such information, may be distributed by us to prospective Lenders who have advised us that they wish to receive only Non-MNPI (“Public Side Lenders”). You acknowledge and agree that, in addition to Public Information and unless you promptly notify us otherwise, (a) drafts and final definitive documentation with respect to the Credit Facilities, (b) administrative materials prepared by the Commitment Parties for prospective Lenders (such as a lender meeting invitation, allocations and funding and closing memoranda) and (c) notifications of changes in the terms of the Credit Facilities may be distributed to Public Side Lenders. You acknowledge that Commitment Party public-side employees and representatives who are publishing debt analysts may participate in any meetings held pursuant to clause (D) of the second preceding paragraph; provided that such analysts shall not publish any information obtained from such meetings (i) until the syndication of the Credit Facilities has been completed upon the making of allocations by the Lead Arrangers and the Lead Arrangers freeing the Credit Facilities to trade or (ii) in violation of any confidentiality agreement between you and the relevant Commitment Party.

In connection with our distribution to prospective Lenders of any Confidential Information Memorandum and, upon our request, any other Information Materials, you will execute and deliver to us a customary authorization letter authorizing such distribution and, in the case of any Public Version thereof or other Public Information, representing that it only contains Non-MNPI. Each Confidential Information Memorandum will be accompanied by a disclaimer exculpating you, the Target and us with respect to any use thereof and of any related Information Materials by the recipients thereof.

4. Information

You hereby represent and warrant that (with respect to any information relating to the Target and its subsidiaries, to your knowledge) (a) all information (including all Information Materials), other than the Projections and information of a general economic or industry specific nature (the “Information”), that has been or will be made available to us by you or any of your representatives in connection with the transactions contemplated hereby, when taken as a whole, does not or will not, when furnished to us, contain any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements contained therein, when taken as a whole, not materially misleading in light of the circumstances under which such statements are made (giving effect to all supplements thereto) and (b) the financial projections and other forward-looking information (the “Projections”) that have been or will be made available to us by you or any of your representatives in connection with the transactions contemplated hereby have been or will be prepared in good faith based upon assumptions believed by you to be reasonable at the time furnished to us (it being recognized by the Commitment Parties that such Projections are not to be viewed as facts and that actual results during the period or periods covered by any such Projections may differ from the projected results, and such differences may be material). You agree that if, at any time prior to the Closing Date and thereafter until completion of our syndication efforts, you become aware that any of the representations in the preceding sentence would be incorrect if such Information or Projections were furnished at such time and such representations were remade, in any material respect, then you will (or, with respect to the Information and Projections relating to the Target and its subsidiaries, will use commercially reasonable efforts to) promptly supplement the Information and the Projections so that (with respect to Information and Projections relating to the Target and its subsidiaries, to your knowledge) such representations when remade would be correct, in all material respects, under those circumstances. You understand that in arranging and syndicating the Credit Facilities we may use and rely on the Information and Projections without independent verification thereof.

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5. Fees

As consideration for the commitments and agreements of the Commitment Parties hereunder, you agree to pay or cause to be paid the nonrefundable fees described in the Arranger Fee Letter dated the date hereof and delivered herewith (the “Arranger Fee Letter”) and the Administrative Agent Fee Letter dated the date hereof and delivered herewith (the “Administrative Agent Fee Letter”; and together with the Arranger Fee Letter, the “Fee Letters”) on the terms and subject to the conditions set forth therein.

6. Conditions

Each Commitment Party’s commitments and agreements hereunder are subject to the conditions set forth in this Section 6, in Exhibit D, in Exhibit B under the heading “CERTAIN CONDITIONS – Initial Conditions” and in Exhibit C under the heading “CERTAIN CONDITIONS – Conditions Precedent” (as applicable).

Notwithstanding anything in this Commitment Letter, the Fee Letters or the Credit Facilities Documentation to the contrary (a) the only representations relating to you and your subsidiaries and the Target and its subsidiaries and their respective businesses the accuracy of which shall be a condition to availability of the Credit Facilities on the Closing Date shall be (i) such of the representations made by and on behalf of the Target in the Purchase Agreement as are material to the interests of the Lenders, but only to the extent that the accuracy of any such representation is a condition to your obligations (or the obligations of the Purchaser) to close under the Purchase Agreement or you (or the Purchaser) has the right (without regard to any notice requirement but giving effect to any applicable cure provisions) to terminate your (or its) obligations under the Purchase Agreement as a result of a breach of such representations in the Purchase Agreement (the “Purchase Agreement Representations”) and (ii) the Specified Representations (as defined below), and (b) the terms of the Credit Facilities Documentation shall be in a form such that they do not impair availability or funding of the Credit Facilities on the Closing Date if the conditions set forth in this paragraph 6 and Exhibit D to this Commitment Letter are satisfied (or waived by the Commitment Parties) (it being understood that, to the extent any Collateral (including the grant or perfection of any security interest) referred to in the Term Sheets is not or cannot be provided on the Closing Date (other than the grant and perfection of security interests (i) in Collateral with respect to which a lien may be perfected solely by the filing of a financing statement under the Uniform Commercial Code (“UCC”) or (ii) in capital stock of U.S. subsidiaries that constitutes Collateral with respect to which a lien may be perfected by the delivery of a stock certificate) after your use of commercially reasonable efforts to do so without undue burden or expense, then the provision of such Collateral shall not constitute a condition precedent to the availability or funding of the Credit Facilities on the Closing Date, but may instead be provided after the Closing Date pursuant to arrangements to be mutually agreed). For purposes hereof, “Specified Representations” means the representations and warranties of the Borrower and the Guarantors referred to in the Term Sheets relating to corporate existence and qualification; power and authority to enter into the Credit Facilities Documentation; due authorization, execution and delivery of, and enforceability of, the Credit Facilities Documentation; effectiveness, validity and perfection of liens in the Collateral under the security documents (subject to the limitations set forth in the preceding sentence and permitted liens as provided in the applicable Credit Facilities Documentation); no conflicts with organizational documents and material debt agreements; use of proceeds; Investment Company Act; solvency as of the Closing Date (after giving effect to the Transactions) of the Borrower and its subsidiaries on a consolidated basis (solvency to be defined in a manner consistent with the manner in which solvency is determined in the solvency certificate to be delivered pursuant to paragraph 1(b) of Exhibit D); Federal Reserve margin regulations; the Patriot Act; OFAC; FCPA; and the Investment Company Act. Notwithstanding anything in this Commitment Letter or the Fee Letters to the contrary, the only conditions to availability of the Credit Facilities on the Closing Date are set forth in each of the relevant Term Sheets under the heading “CERTAIN CONDITIONS–

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Initial Conditions” (in the case of Exhibit B) or “CERTAIN CONDITIONS” (in the case of Exhibit C) and in Exhibit D. This paragraph, and the provisions herein, shall be referred to as the “Limited Conditionality Provision”.

7. Indemnification and Expenses

You agree (a) to indemnify and hold harmless the Commitment Parties, their affiliates and their respective directors, officers, employees, advisors, agents and other representatives (each, an “indemnified person”) from and against any and all losses, claims, damages and liabilities to which any such indemnified person may become subject arising out of or in connection with this Commitment Letter, the Fee Letters, the Credit Facilities, the use of the proceeds thereof or the Acquisition and the Transactions or any claim, litigation, investigation or proceeding (a “Proceeding”) relating to any of the foregoing, regardless of whether any indemnified person is a party thereto, whether or not such Proceedings are brought by you, your equity holders, affiliates, creditors or any other person, and to reimburse each indemnified person upon demand for any reasonable and documented legal or other out-of-pocket expenses incurred in connection with investigating or defending any of the foregoing, provided that the foregoing indemnity will not, as to any indemnified person, apply to losses, claims, damages, liabilities or related expenses to the extent they are found by a final, nonappealable judgment of a court of competent jurisdiction to arise from (i) the willful misconduct or gross negligence of such indemnified person or its control affiliates, directors, officers or employees (collectively, the “Related Parties”), (ii) a material breach in bad faith of the obligations of such indemnified person or any of its affiliates under this Commitment Letter, the Fee Letters or the Credit Facilities Documentation or (iii) disputes that are brought by an indemnified person against any other indemnified person (other than any claims against any arranger, bookrunner or agent in its capacity or in fulfilling its roles as an arranger, bookrunner or agent hereunder or any similar role with respect to the Credit Facilities) to the extent such disputes do not arise from any act or omission of you or any of your affiliates and (b) regardless of whether the Closing Date occurs, to reimburse each Commitment Party and its affiliates for all reasonable and documented out-of-pocket expenses that have been invoiced prior to the Closing Date or following termination or expiration of the commitments hereunder (including due diligence expenses, syndication expenses, travel expenses, and the reasonable fees, charges and disbursements of (x) the external counsel identified in the Term Sheets and (y) with respect to fees, charges and disbursements incurred prior to the date hereof, a single external counsel of Barclays) incurred in connection with each of the Credit Facilities and any related documentation (including this Commitment Letter and the Credit Facilities Documentation) or the administration, amendment, modification or waiver thereof. It is further agreed that each Commitment Party shall only have liability to you (as opposed to any other person) and that each Commitment Party shall be liable solely in respect of its own commitment to the Credit Facilities on a several, and not joint, basis with any other Commitment Party. No indemnified person shall be liable for any damages arising from the use by others of Information or other materials obtained through electronic, telecommunications or other information transmission systems, except to the extent any such damages are found by a final, nonappealable judgment of a court of competent jurisdiction to arise from the gross negligence or willful misconduct of such indemnified person (or any of its Related Parties). None of the indemnified persons or you, the Target or any of your or their respective affiliates or the respective directors, officers, employees, advisors, and agents of the foregoing shall be liable for any indirect, special, punitive or consequential damages in connection with this Commitment Letter, the Fee Letters, the Credit Facilities or the transactions contemplated hereby, provided that nothing contained in this sentence shall limit your indemnity obligations in respect of any such damages incurred or paid by an indemnified person to a third party.

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8. Sharing of Information, Absence of Fiduciary Relationship, Affiliate Activities

You acknowledge that each Commitment Party (or an affiliate) is a full service securities firm and such person may from time to time effect transactions, for its own or its affiliates’ account or the account of customers, and hold positions in loans, securities or options on loans or securities of you, the Target, your or their respective affiliates and of other companies that may be the subject of the transactions contemplated by this Commitment Letter. In addition, each Commitment Party and its affiliates will not use confidential information obtained from you or your affiliates or on your or their behalf by virtue of the transactions contemplated hereby in connection with the performance by such Commitment Party and its affiliates of services for other companies or persons and each Commitment Party and its affiliates will not furnish any such information to any of their other customers. You also acknowledge that the Commitment Parties and their respective affiliates have no obligation to use in connection with the transactions contemplated hereby, or to furnish to you, confidential information obtained from other companies or persons.

The Borrower agrees that it will not assert any claim against any Commitment Party based on an alleged breach of fiduciary duty by such Commitment Party in connection with this Commitment Letter and the transactions contemplated hereby. The Borrower acknowledges and agrees that, as a Lead Arranger, neither JPMorgan nor Barclays is advising the Borrower as to any legal, tax, investment, accounting, regulatory or any other matters in any jurisdiction. The Borrower shall consult with its own advisors concerning such matters and shall be responsible for making its own independent investigation and appraisal of the transactions contemplated hereby, and no Lead Arranger shall have any responsibility or liability to the Borrower with respect thereto. Any review by a Lead Arranger of the Borrower, the Target, the transactions contemplated hereby or other matters relating to such transactions will be performed solely for the benefit of such Lead Arranger and its lending affiliates, and shall not be on behalf of the Borrower. It is understood that this paragraph shall not apply to or modify or otherwise affect any arrangement with any financial advisor separately retained by you or any of your affiliates in connection with the Acquisition, in its capacity as such.

9. Confidentiality

This Commitment Letter is delivered to you on the understanding that neither this Commitment Letter nor the Fee Letters nor any of their terms or substance shall be disclosed by you, directly or indirectly, to any other person except (a) you and your officers, directors, employees, affiliates, members, partners, attorneys, accountants, agents and advisors and those of the Target and its subsidiaries and the Target itself, in each case on a confidential and need-to-know basis (provided that any disclosure of the Fee Letters or its terms or substance to the Target or its officers, directors, employees, attorneys, accountants, agents or advisors shall be redacted in a manner reasonably satisfactory to the applicable Commitment Parties), (b) in any legal, judicial or administrative proceeding or as otherwise required by law or regulation or as requested by a governmental authority (in which case you agree, to the extent permitted by law, to use commercially reasonable efforts to inform us promptly in advance thereof), (c) upon notice to the Commitment Parties, this Commitment Letter and the existence and contents hereof (but not the Fee Letters or the contents thereof other than the existence thereof and the contents thereof as part of projections, pro forma information and a generic disclosure of aggregate sources and uses to the extent customary in marketing materials and other required filings) may be disclosed in any syndication or other marketing material in connection with the Credit Facilities or in connection with any public filing requirement, and (d) the Term Sheets may be disclosed to potential Lenders and to any rating agency in connection with the Acquisition and the Credit Facilities.

The Commitment Parties shall use all nonpublic information received by them in connection with the Acquisition and the related transactions solely for the purposes of providing the services that are the

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subject of this Commitment Letter and shall treat confidentially all such information; provided, however, that nothing herein shall prevent any Commitment Party from disclosing any such information (a) to rating agencies, (b) to any Lenders or participants or prospective Lenders or participants, (c) in any legal, judicial or administrative proceeding or other compulsory process or as required by applicable law or regulations (in which case such Commitment Party shall use commercially reasonable efforts to promptly notify you, in advance, to the extent permitted by law), (d) upon the request or demand of any regulatory authority having jurisdiction over such Commitment Party or its affiliates, (e) to the employees, legal counsel, independent auditors, professionals and other experts or agents of such Commitment Party (collectively, “Representatives”) who are informed of the confidential nature of such information and are or have been advised of their obligation to keep information of this type confidential, (f) to any of its respective affiliates (provided that any such affiliate is advised of its obligation to retain such information as confidential, and such Commitment Party shall be responsible for its affiliates’ compliance with this paragraph) solely in connection with the Acquisition and any related transactions, (g) to the extent any such information becomes publicly available other than by reason of disclosure by such Commitment Party, its affiliates or Representatives in breach of this Commitment Letter and (h) for purposes of establishing a “due diligence” defense; provided that the disclosure of any such information to any Lenders or prospective Lenders or participants or prospective participants referred to above shall be made subject to the acknowledgment and acceptance by such Lender or prospective Lender or participant or prospective participant that such information is being disseminated on a confidential basis in accordance with the standard syndication processes of such Commitment Party or customary market standards for dissemination of such type of information. The provisions of this paragraph shall automatically terminate two years following the date of this Commitment Letter.

10. Miscellaneous

This Commitment Letter shall not be assignable by you (except to one or more of your subsidiaries immediately prior to or otherwise substantially concurrently with the consummation of the Acquisition) without the prior written consent of each Commitment Party (and any purported assignment without such consent shall be null and void), is intended to be solely for the benefit of the parties hereto and the indemnified persons and is not intended to and does not confer any benefits upon, or create any rights in favor of, any person other than the parties hereto and the indemnified persons to the extent expressly set forth herein. The Commitment Parties reserve the right to employ the services of their affiliates in providing services contemplated hereby and to allocate, in whole or in part, to their affiliates certain fees payable to the Commitment Parties in such manner as the Commitment Parties and their affiliates may agree in their sole discretion. This Commitment Letter may not be amended or waived except by an instrument in writing signed by you and each Commitment Party. This Commitment Letter may be executed in any number of counterparts, each of which shall be an original, and all of which, when taken together, shall constitute one agreement. Delivery of an executed signature page of this Commitment Letter by facsimile or electronic transmission (e.g., “pdf” or “tif”) shall be effective as delivery of a manually executed counterpart hereof. This Commitment Letter and the Fee Letters are the only agreements that have been entered into among us and you with respect to the Credit Facilities and set forth the entire understanding of the parties with respect thereto. This Commitment Letter and any claim or controversy arising hereunder or related hereto shall be governed by, and construed and interpreted in accordance with, the laws of the State of New York; provided that the laws of the State of Delaware shall govern in determining (i) the interpretation of the definition of Company Material Adverse Effect and whether or not a Company Material Adverse Effect has occurred, (ii) the accuracy of any Purchase Agreement Representation and whether as a result of any inaccuracy thereof, a condition to your obligations (or the obligations of the Purchaser) to close under the Purchase Agreement has not been met or you (or the Purchaser) have the right (without regard to any notice requirement but giving effect to any applicable cure provisions) to terminate your (or its) obligations under the Purchase Agreement and (iii)

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whether the Acquisition has been consummated in accordance with the terms of the Purchase Agreement (in each case without regard to its rules of conflicts of law).

You and we hereby irrevocably and unconditionally submit to the exclusive jurisdiction of any state or Federal court sitting in the Borough of Manhattan in the City of New York over any suit, action or proceeding arising out of or relating to the Transactions or the other transactions contemplated hereby, this Commitment Letter or the Fee Letters or the performance of services hereunder or thereunder. You and we agree that service of any process, summons, notice or document by registered mail addressed to you or us shall be effective service of process for any suit, action or proceeding brought in any such court. You and we hereby irrevocably and unconditionally waive any objection to the laying of venue of any such suit, action or proceeding brought in any such court and any claim that any such suit, action or proceeding has been brought in any inconvenient forum. You and we hereby irrevocably agree to waive trial by jury in any suit, action, proceeding, claim or counterclaim brought by or on behalf of any party related to or arising out of the Transactions, this Commitment Letter or the Fee Letters or the performance of services hereunder or thereunder.

Each of the Commitment Parties hereby notifies you that, pursuant to the requirements of the USA PATRIOT Act, Title III of Pub. L. 107-56 (signed into law on October 26, 2001) (the “PATRIOT Act”), it is required to obtain, verify and record information that identifies the Borrower and each Guarantor, which information includes names, addresses, tax identification numbers and other information that will allow such Lender to identify the Borrower and each Guarantor in accordance with the PATRIOT Act. This notice is given in accordance with the requirements of the PATRIOT Act and is effective for the Commitment Parties and each Lender.

The indemnification, fee, expense, jurisdiction, syndication and confidentiality provisions contained herein and in the Fee Letters shall remain in full force and effect regardless of whether definitive financing documentation shall be executed and delivered and notwithstanding the termination of this Commitment Letter or the commitments hereunder; provided that your obligations under this Commitment Letter (other than your obligations with respect to (a) assistance to be provided in connection with the syndication thereof (including as to the provision of information and representations with respect thereto) and (b) confidentiality) shall automatically terminate and be superseded, to the extent comparable, by the provisions of the Credit Facilities Documentation upon the initial funding thereunder, and you shall automatically be released from all liability in connection therewith at such time.

If the foregoing correctly sets forth our agreement, please indicate your acceptance of the terms of this Commitment Letter and the Fee Letters by returning to JPMorgan executed counterparts of this Commitment Letter and the Fee Letters not later than 9:00 p.m., New York City time, on September 21, 2014. This offer will automatically expire at such time if we have not received such executed counterparts in accordance with the preceding sentence. In the event that the initial borrowing under the Credit Facilities does not occur on or before the Expiration Date, then this Commitment Letter and the commitments hereunder shall automatically terminate unless we shall, in our discretion, agree to an extension. “Expiration Date” means the earliest of (i) the date that is nine months after the date hereof (the “Commitment Outside Date”); provided that (x) if on the Commitment Outside Date one or more conditions to the closing of the Acquisition set forth in Section 7.01(b), 7.01(d) or 7.01(c) of the Purchase Agreement (but for purposes of Section 7.01(c) of the Purchase Agreement only if such restraint or prohibition is attributable to an Antitrust Law (as defined in the Purchase Agreement as of the date hereof) or Exon-Florio (as defined in the Purchase Agreement as of the date hereof) or otherwise seeking approval under an Antitrust Law (as defined in the Purchase Agreement as of the date hereof) or CFIUS Approval (as defined in the Purchase Agreement as of the date hereof)) shall not have been fulfilled, but all other conditions to the closing of the Acquisition shall be or shall be capable of being fulfilled and (y) the Outside Date (as defined in the Purchase Agreement as of the date hereof) is extended pursuant to the

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Purchase Agreement for a period of up to three additional months, then the Commitment Outside Date shall be extended to match the new Outside Date under the Purchase Agreement, (ii) the closing of the Acquisition (x) in the case of the ABL Facility, without the use of the ABL Facility (it being agreed that no borrowings thereunder shall be required as of the Closing Date) or (y) in the case of the Term B Facility, without the use of the Term B Facility and (iii) the termination of the Purchase Agreement prior to closing of the Acquisition.

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We are pleased to have been given the opportunity to assist you in connection with this important financing.

Commitment Letter Signature Page

Accepted and agreed to as of the date first written above:

Commitment Letter Signature Page

EXHIBIT A

PROJECT VECTOR

TRANSACTION SUMMARY

Capitalized terms used but not defined in this Exhibit A shall have the meanings set forth in the Commitment Letter to which this Exhibit A is attached and in Exhibits B, C and D thereto.

TTM Technologies, Inc. (the “Borrower”) intends to acquire (the “Acquisition”) the company identified to us as “Vector” (the “Target”) through a merger transaction, pursuant to an Agreement and Plan of Merger (together with all exhibits, schedules and disclosure letters thereto, the “Purchase Agreement”) dated as of September 21, 2014 among the Target, a newly formed subsidiary of the Borrower (the “Purchaser”) and the Borrower. In connection therewith, it is intended that:

(a)        The Borrower will obtain a senior secured asset-based revolving facility (the “ABL Facility”) in an aggregate amount of $150 million, as described in Exhibit B.

(b)        The Borrower will obtain a senior secured term loan B facility (the “Term B Facility” and together with the ABL Facility, the “Credit Facilities”) in an aggregate amount of $1,115 million, as described in Exhibit C.

(c)        The proceeds of the Credit Facilities on the Closing Date will be applied (i) to refinance certain existing indebtedness of the Target (including the Target’s 7.875% Senior Secured Notes due 2019), (ii) to refinance certain existing indebtedness of the Borrower (including the Facility Agreement, dated September 14, 2012, consisting of a $370 million senior secured term loan, a $90 million senior secured revolving loan and a secured $80 million letter of credit facility (such letter of credit facility, the “Hong Kong LC Facility”)); provided that the Hong Kong LC Facility will be amended, refinanced or otherwise replaced on terms mutually agreeable to the Borrower and the Commitment Parties (such amended, refinanced or replacement facility, the “Hong Kong Replacement LC Facility”), (iii) to pay the cash consideration for the Acquisition and (iv) to pay the fees and expenses incurred in connection with the Transactions (such fees and expenses, the “Transaction Costs”).

The transactions described above are collectively referred to herein as the “Transactions”. For purposes of this Commitment Letter and the Fee Letters, “Closing Date” shall mean the date of the satisfaction or waiver of the conditions set forth in Exhibit D and the initial funding of the relevant Credit Facilities.

EXHIBIT B

PROJECT VECTOR

$150 million

ABL Facility

Summary of Terms and Conditions

Set forth below is a summary of the principal terms and conditions for the ABL Facility. Capitalized terms used but not defined shall have the meanings set forth in the Commitment Letter to which this Exhibit B is attached and in Exhibits A, C and D attached thereto.

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Annex I to Exhibit B

INTEREST AND CERTAIN FEES

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Annex I-A to Exhibit B

The applicable margins and fees shall be determined in accordance with the foregoing table based on the most recent Borrowing Base certificate delivered pursuant to the ABL Credit Documentation. Adjustment, if any, to the applicable margins and fees shall be effective three business days the ABL Administrative Agent has received the applicable Borrowing Base certificate. If the Borrower fails to deliver the Borrowing Base certificate to the ABL Administrative Agent at the time required pursuant to the ABL Credit Documentation, then the applicable margins and fees shall be the highest applicable margin and fees set forth in the foregoing table until the date that such Borrowing Base certificate is so delivered.

EXHIBIT C

PROJECT VECTOR

$1,115 million

Term B Facility

Summary of Terms and Conditions

Set forth below is a summary of the principal terms and conditions for the Term B Facility. Capitalized terms used but not defined shall have the meanings set forth in the Commitment Letter to which this Exhibit C is attached and in Exhibits A, B and D attached thereto.

1. PARTIES

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Annex I to Exhibit C

INTEREST AND CERTAIN FEES

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EXHIBIT D

PROJECT VECTOR

Conditions

The availability of the Credit Facilities shall be subject to the satisfaction of the following conditions (subject to the Limited Conditionality Provision). Capitalized terms used but not defined herein have the meanings set forth in the Commitment Letter to which this Exhibit D is attached and in Exhibits A, B and C thereto.

1. The Borrower and each Guarantor shall have executed and delivered the ABL Credit Documentation and the Term B Credit Documentation, including the Intercreditor Agreement (collectively, the “Credit Facilities Documentation”), which shall be in accordance with the terms of the Commitment Letter, and the Commitment Parties shall have received:

2. On the Closing Date, after giving effect to the Transactions, neither the Borrower nor any of its subsidiaries shall have any material indebtedness for borrowed money other than (i) the ABL Facility and the Term B Facility, (ii) the Convertible Notes, (iii) the Hong Kong Replacement LC Facility and (iv) other indebtedness reasonably and mutually agreed by the Commitment Parties.

3. The Acquisition shall be consummated pursuant to the Purchase Agreement, substantially concurrently with the initial funding of the Credit Facilities, and no provision thereof shall have been amended or waived, and no consent or direction shall have been given thereunder, in any manner materially adverse to the interests of the Commitment Parties or the Lenders without the prior written consent of the Lead Arrangers (such consent not to be unreasonably withheld or delayed).

4. The closing of the Credit Facilities shall have occurred on or before the Expiration Date.

5. The Commitment Parties shall have received (a) audited consolidated balance sheets and related statements of income, stockholders’ equity and cash flows of each of the Borrower and its subsidiaries and the Target and its subsidiaries, in each case for the three most recently completed fiscal years ended at least 90 days before the Closing Date (except that financials for the year ending December 31, 2014 shall only be required if the Closing Date occurs on a date that is more than 90 days following December 31, 2014) and (b) unaudited consolidated balance sheets and related statements of income, stockholders’ equity and cash flows of each of the Borrower and its subsidiaries and the Target and its subsidiaries, in each case for each subsequent fiscal quarter ended (that is not a fiscal year-end) at least 45 days before the Closing Date; provided that filing of the required financial statements on form 10-K and form 10-Q by the Borrower or the Target, as applicable, will satisfy the foregoing requirements.

6. The Commitment Parties shall have received a pro forma consolidated balance sheet and related pro forma consolidated statement of income of the Borrower and its subsidiaries as of and for the twelve-month period ending on the last day of the most recently completed four-fiscal quarter period ended at least 45 days prior to the Closing Date, prepared after giving effect to the Transactions as

if the Transactions had occurred as of such date (in the case of such balance sheet) or at the beginning of such period (in the case of such statement of income).

7. The Lead Arrangers shall have received, at least three business days prior to the Closing Date, all documentation and other information about the Borrower and the Guarantors that shall have been reasonably requested by the Lead Arrangers in writing at least 10 business days prior to the Closing Date and that the Lead Arrangers reasonably determine is required by United States bank regulatory authorities under applicable “know-your-customer” and anti-money laundering rules and regulations, including the PATRIOT Act.

8. All costs, fees and expenses (including, without limitation, reasonable and documented legal fees and expenses of counsel to the Administrative Agents) and other compensation required to be paid by the Borrowers pursuant to the terms of the Commitment Letter and the Fee Letters payable to the Commitment Parties, the Administrative Agent or the Lenders shall have been paid or shall have been authorized to be deducted from the proceeds of the initial fundings under the Credit Facilities to the extent due and invoiced to the Borrower.

9. All actions necessary to establish that the applicable Administrative Agent will have a perfected security interest (subject to permitted liens to be agreed) in the Collateral under the Credit Facilities shall have been taken.

10. The Lead Arrangers under each Credit Facility shall have received from the Borrower all information customarily provided by a borrower for inclusion in a confidential information memorandum for each of an asset-based revolving credit facility and a term loan “B” facility (the “Required Information”) not later than 15 consecutive business days prior to the Closing Date; provided that such 15 consecutive business day period shall (i) exclude November 27, 2014 and November 28, 2014 (which for purposes of such calculation shall not constitute business days), (ii) have been completed on or prior to December 24, 2014 or shall commence on or after January 5, 2015, (iii) exclude July 6, 2015 (which for purposes of such calculation shall not constitute a business day) and (iv) have been completed on or prior to August 14, 2015; provided further that if the Borrower in good faith reasonably believes that it has delivered the Required Information, the Borrower may (but shall not be obligated to) deliver to the Lead Arrangers written notice to that effect (stating when it believes it completed such delivery), in which case the Required Information shall be deemed to have been delivered on the date of such notice unless any Lead Arranger reasonably believes that the Borrower has not completed such delivery and, within three business days after its receipt of such notice from the Borrower, such Lead Arranger delivers a written notice to the Borrower to that effect (stating with specificity the portion or portions of the Required Information that such Lead Arranger believes have not yet been delivered or are not complete or sufficient), in which case the Required Information shall be deemed to be delivered immediately upon the delivery by the Borrower of provisions reasonably addressing the points contained in the notice.

11. (a) Except as set forth in the Company Disclosure Schedule (as defined in the Purchase Agreement as of the date hereof) or as set forth in the Company SEC Reports (as defined in the Purchase Agreement as of the date hereof) filed from and after January 1, 2014 and prior to the date of the Purchase Agreement (excluding all disclosures in any “Risk Factors” section and any disclosures included in any such Company SEC Reports that are forward looking in nature), but only to the extent such disclosure is reasonably apparent from a reading of such Company SEC Reports that such disclosure relates to Section 4.10(b) of the Purchase Agreement, since December 31, 2013, through the date of the Purchase Agreement, there has not been an event, occurrence, condition, change, development, state of facts or circumstance that has had or would reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect (as defined below).

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(b) Since the date of the Purchase Agreement, there shall not have been any event, occurrence, condition, change, development, state of facts or circumstance that has had, or would reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

“Company Material Adverse Effect” means (a) a material adverse effect on the business, assets, results of operations or financial condition of the Company and its Subsidiaries, taken as a whole, or (b) an effect that prevents or materially impairs the ability of the Company to perform its obligations under the Purchase Agreement or consummate the Transactions, other than, for the purposes of clause (a), any effect arising out of or resulting from any of the following: (i) a decline in the market price, or a change in the trading volume of, the Company Shares (provided that this clause (i) shall not preclude any effect, event, occurrence, development, state of facts or change that may have contributed to or caused such changes and is not excluded by clauses (ii) - (viii) of this definition from being taken into account in determining whether a Company Material Adverse Effect has occurred); (ii) general printed circuit board manufacturing industry, economic, market or political conditions, or the financing, banking, currency or capital markets generally, including with respect to interest rates or currency exchange rates; (iii) acts of war, sabotage or terrorism, natural disasters, acts of God or comparable events; (iv) changes in applicable Law, GAAP or other applicable accounting standards (or the interpretation or enforcement thereof) following the date of the Purchase Agreement; (v) the negotiation, execution, announcement, pendency or performance of the Purchase Agreement or the Transactions or the consummation of the Transactions (provided that this clause (v) shall not preclude any breach of the representations and warranties made in Section 4.06 of the Purchase Agreement from being taken into account in determining whether a Company Material Adverse Effect has occurred); (vi) (A) any loss of or adverse impact on relationships with employees, customers, suppliers or distributors, (B) any delays in or cancellations of orders for the products or services of such Person and (C) any reduction in revenues, in each case to the extent resulting primarily from or arising primarily out of the announcement or pendency of the Merger; (vii) any failure to meet revenue or earnings projections, in and of itself, for any period ending on or after the date of the Purchase Agreement (provided that this clause (vii) shall not preclude any effect, event, occurrence, development, state of facts or change that may have contributed to or caused such failure to meet revenues or earnings projections from being taken into account in determining whether a Company Material Adverse Effect has occurred); or (viii) any specific action taken (or omitted to be taken) by the Company (A) at or with the express written direction or written consent of Parent or (B) that is otherwise expressly contemplated by, or permitted to be taken by the Company in accordance with the terms of, the Purchase Agreement (provided that, in each case of subclause (A) of this clause (viii), the Lead Arrangers have consented to the taking (or omission of taking) of such specific action (which consent shall not be unreasonably withheld, conditioned or delayed)); provided, however, in the case of clauses (ii), (iii) and (iv), except to the extent that the Company and its Subsidiaries, taken as a whole, are disproportionately affected relative to other participants in the industries in which the Company and its Subsidiaries participate. Defined terms used in this paragraph (other than the term “Purchase Agreement”) shall have the meanings set forth in the Purchase Agreement as of the date hereof.

12. (a) Each of the Purchase Agreement Representations shall be true and correct in all respects, except to the extent expressly made as of an earlier date, in which case such Purchase Agreement Representations shall have been true and correct in all respects as of such earlier date.

      (b) Each of the Specified Representations shall be true and correct in all material respects (or in all respects, if qualified by materiality), except to the extent expressly made as of an earlier date, in which case such Specified Representations shall have been true and correct in all material respects (or in all respects, if qualified by materiality) as of such earlier date.

13. If loans are to be made under the ABL Facility on the Closing Date, the Borrower shall have provided the ABL Administrative Agent with a completed borrowing base certificate,

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calculated in accordance with Exhibit B, prepared as at the end of the most recent calendar month ended at least 20 business days (or such shorter period as may be elected by the Borrower) prior to the Closing Date (it being understood that (i) the Borrower shall use commercially reasonable efforts to deliver an inventory appraisal and field examination reasonably satisfactory to the ABL Administrative Agent prior to the Closing Date, but delivery of such inventory appraisal and field examination shall not be a condition precedent to the funding and availability of the ABL Facility and (ii) with respect to the Target and solely for the borrowing base certificate delivered on the Closing Date, the information required by the borrowing base certificate shall be generally consistent with the information provided in borrowing base certificates delivered by the Target under its existing asset-based revolving facility).

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ANNEX I to Exhibit D

FORM OF SOLVENCY CERTIFICATE

This Certificate is being delivered pursuant to Section [    ] of the Credit Agreement dated as of [            ] (the “Credit Agreement”), among TTM Technologies, Inc. (the “Borrower”), the lenders from time to time party thereto and JPMorgan Chase Bank, N.A., as administrative agent. Unless otherwise defined herein, terms used herein have the meanings provided in the Credit Agreement.

[    ] hereby certifies that he/she is the Chief Financial Officer of the Borrower and that he/she is knowledgeable of the financial and accounting matters of the Borrower and its Subsidiaries, the Credit Agreement and the covenants and representations (financial and other) contained therein and that, as such, he/she is authorized to execute and deliver this Certificate on behalf of the Borrower.

The undersigned hereby further certifies, solely in his/her capacity as Chief Financial Officer of the Borrower and not in an individual capacity, as follows:

The financial information, projections and assumptions which underlie and form the basis for the representations made in this certificate were based upon good faith estimates and assumptions believed to be reasonable to the management of the Borrower at the time made, in light of the circumstances under which they were made (it being understood that such financial information, projections or forecasts as they relate to future events are not to be viewed as fact and that actual results during the period or periods covered by such financial information, projections or assumptions may differ from the projected results set forth therein by a material amount).

In computing the amount of the contingent liabilities of the Borrower and its Restricted Subsidiaries as of the date hereof, such liabilities have been computed at the amount that, in light of all the facts and

circumstances existing as of the date hereof, represents the amount that can reasonably be expected to become an actual or matured liability.

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IN WITNESS WHEREOF, the undersigned has executed this Certificate solely in his/her capacity as Chief Financial Officer of the Borrower (and not in an individual capacity) this [    ] day of [    ], 20[    ].

Solvency Certificate Signature Page