WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

  

<ARTICLE> 5
<MULTIPLIER> 1,000
       

		      Supertex, Inc.
		 Financial Data Schedule
	  For Three Months ended June 30, 1998
		  (in thousands)
                                        
<PERIOD-TYPE>                              3-MOS
<FISCAL-YEAR-END>                          MAR-31-1999
<PERIOD-END>                               JUN-30-1998
<CASH>                                          22,498
<SECURITIES>                                    12,356     
<RECEIVABLES>                                    9,504
<ALLOWANCES>                                       706
<INVENTORY>                                     10,591
<CURRENT-ASSETS>                                56,828
<PP&E>                                          27,369
<DEPRECIATION>                                  15,060
<TOTAL-ASSETS>                                  69,137
<CURRENT-LIABILITIES>                            9,630
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        20,800
<OTHER-SE>                                      38,707
<TOTAL-LIABILITY-AND-EQUITY>                    69,137
<SALES>                                         13,001
<TOTAL-REVENUES>                                13,001
<CGS>                                            6,907
<TOTAL-COSTS>                                   10,100
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                    35
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  3,342
<INCOME-TAX>                                     1,135
<INCOME-CONTINUING>                              2,207
<DISCONTINUED>                                       0


<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,207
<EPS-PRIMARY>                                      .18
<EPS-DILUTED>                                      .18