EXHIBIT 5.1

EXHIBIT 5.1

[SHEARMAN & STERLING LETTERHEAD]

------, 2000

TTM Technologies, Inc.

17550 N.E. 67th Court

Redmond, WA 98052

Ladies and Gentlemen,

We are acting as counsel for TTM Technologies, Inc. (the "Company") in
connection with the Registration Statement on Form S-1, as amended (Registration
Statement No. 333-
- ------) (the "Registration Statement"), filed with the Securities and Exchange
Commission under the Securities Act of 1933, as amended (the "Securities Act"),
relating to the offering, as set forth in the prospectus contained in the
Registration Statement (the "Prospectus"), of the Company's shares of common
stock, $0.001 par value per share (the "Shares"). The Shares are to be sold by
the Company pursuant to the terms of an underwriting agreement (the
"Underwriting Agreement") between the Company and the underwriters named
therein.

We have examined the Underwriting Agreement and the originals, or copies
identified to our satisfaction, of such corporate records of the Company,
certificates of public officials, officers of the Company and other persons, and
such other documents, agreements and instruments as we have deemed necessary as
a basis for the opinions hereinafter expressed. In our examinations, we have
assumed the genuineness of all signatures, the authenticity of all documents
submitted to us as originals and the conformity with the originals of all
documents submitted to us as copies.

Our opinion expressed herein is limited to the Federal law of the United
States, the law of the State of New York and the General Corporation Law of the
State of Delaware.

Based on the foregoing and having regard for such legal considerations as we
deem relevant, we are of the opinion that, when issued and delivered in
accordance with the terms of the Underwriting Agreement, the Shares will be
legally issued, fully paid and non-assessable.

We hereby consent to the use of this opinion as Exhibit 5.1 to the
Registration Statement and to the use of our name under the caption "Legal
Matters" contained in the Prospectus which is included in the Registration
Statement. In giving this consent, we do not thereby concede that we come within
the category of persons whose consent is required by the Securities Act or the
rules and regulations promulgated thereunder.

Very truly yours,

/s/ Shearman & Sterling
SHEARMAN & STERLING

KPK/MKH/DJC/TYB
MPDOC501/4413 1