EXHIBIT 99.8

CERTIFICATION PURSUANT TO 18 U.S.C. 1350 ADOPTED PURSUANT TO SECTION 906 OF
 THE SARBANES-OXLEY ACT OF 2002

The undersigned hereby certify,  pursuant to 18 U.S.C.  Section 1350, as adopted
pursuant  to  Section  906 of the  Sarbanes-Oxley  Act of 2002,  that,  to their
knowledge,  the  Quarterly  Report on Form 10-Q for the  quarterly  period ended
March 31, 2003 of Diodes  Incorporated  (the "Company")  fully complies with the
requirements of Sections 13(a) or 15(d) of the Securities  Exchange Act of 1934,
as amended,  and that the  information  contained in such periodic report fairly
presents,  in all material  respects,  the  financial  condition  and results of
operations of the Company as of, and for, the periods presented in such report.


Very truly yours,


/s/ C.H. Chen
C.H. Chen
Chief Executive Officer
Date: May 9, 2003



/s/ Carl Wertz
Carl Wertz
Chief Financial Officer
Date: May 9, 2003



A signed  original of this  written  statement  required by Section 906 has been
provided to Diodes  Incorporated  and will be  furnished to the  Securities  and
Exchange Commission or its staff upon request.