UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                                   FORM 8-K

--------------------------------------------------------------------------

                                CURRENT REPORT
   PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

      Date of Report (Date of Earliest Event Reported): July 14, 2003

                                SUPERTEX, INC.
                (Exact Name of Registrant as Specified in Charter)

                                    0-12718
                             (Commission File Number)

California                                                  94-2328535
(State or Other Jurisdiction of                          (I.R.S. Employer
Incorporation or Organization)                           Identification No.)


                               1235 Bordeaux Drive
                            Sunnyvale, California 94089
           (Address of principal executive offices including zip code)

                                  (408) 222-8888
                (Registrant's telephone number, including area code)

--------------------------------------------------------------------------

                                TABLE OF CONTENTS

	Item 7.  Financial Statements and Exhibits
	Item 9.  Regulation FD Disclosure
		SIGNATURES
	Exhibit Index
		EXHIBIT 99.1


--------------------------------------------------------------------------
Item 7.  Financial Statements and Exhibits

	(c)  Exhibits

		Exhibit 99.1, Registrant's Press Release dated July 14,
2003, is furnished pursuant to Item 12 of Form 8-K.

Item 9. Regulation FD Disclosure (Information furnished pursuant to Item 12,
 "Disclosure of Results of Operations and Financial Condition").

On July 14, 2003, Registrant announced via press release its preliminary
results for its first fiscal quarter ended June 28, 2003.
The full text of the press release issued in connection with that
announcement is attached as Exhibit 99.1 to this Current Report on Form 8-K.

In accordance with the procedural guidance in SEC Release No. 33-8216, the
information in this Form 8-K and its Exhibit 99.1 is being furnished under
"Item 9. Regulation FD Disclosure" rather than under "Item 12. "Disclosure
of Results of Operations and Financial Condition".  The information shall
not be deemed "filed" for purposes of Section 18 of the Securities Exchange
Act of 1934 (the "Exchange Act") or otherwise subject to the liabilities of
that section, nor shall it be deemed incorporated by reference in any filing
under the Securities Act of 1933 or the Exchange Act, except as expressly
set forth by specific reference in such filing.
---------------------------------------------------------------------------

                                SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.



Date: July 14, 2003 					SUPERTEX, INC.


                                By:        /s/ Henry C. Pao
                                   ---------------------------------------
                                   Henry C. Pao, Ph.D.
                                   President
                                (Principal Executive and Financial Officer)



--------------------------------------------------------------------------

                                Exhibit Index

Exhibit                   Description
99.1                      Registrant's press release dated July 14, 2003, is
                          furnished pursuant to Item 12 of Form 8-K.