EXHIBIT 5.1

WILSON SONSINI GOODRICH & ROSATI

Professional Corporation

650 Page Mill Road

Palo Alto, California  94304-1050

December 20, 2002

TriQuint Semiconductor, Inc.

2300 N.E. Brookwood Parkway

Hillsborough, Oregon 97124

Re:          Registration Statement on Form S-8

Ladies and Gentlemen:

We have examined the Registration Statement on Form S-8 to be filed by you with the Securities and Exchange Commission on or about December 20, 2002 (the “Registration Statement”) in connection with the registration under the Securities Act of 1933, as amended, of 1,000,000 shares of your Common Stock under the 1998 Nonstatutory Stock Option Plan, as amended.  Such shares of Common Stock are referred to herein as the “Shares”, and the plan is referred to herein as the “Plan”.  As your counsel in connection with this transaction, we have examined the proceedings taken and are familiar with the proceedings proposed to be taken by you in connection with the issuance and sale of the Shares pursuant to the Plan.

It is our opinion that, when issued and sold in the manner described in the Plan and pursuant to the agreements which accompany each grant under the Plan, the Shares will be legally and validly issued, fully paid and non-assessable.

We consent to the use of this opinion as an exhibit to the Registration Statement, and further consent to the use of our name wherever appearing in the Registration Statement and any amendments thereto.

Very truly yours,

WILSON SONSINI GOODRICH & ROSATI

Professional Corporation

/s/ Wilson Sonsini Goodrich & Rosati