EXHIBIT 99.4 CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 I, Kiran Patel, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Solectron Corporation on Form 10-Q for the three-month period ended May 31, 2003 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Form 10-Q fairly presents in all material respects the financial condition and results of operations of Solectron Corporation. Date: July 11, 2003 /S/ Kiran Patel ----------------------------------------------------- Kiran Patel Executive Vice President and Chief Financial Officer A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to Solectron Corporation and will be retained by Solectron Corporation and furnished to the Securities and Exchange Commission or its staff upon request.