WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 5
<RESTATED><F1>
<MULTIPLIER> 1,000
<S> <C> <C> <C> <C>
<PERIOD-TYPE> YEAR YEAR YEAR YEAR
<FISCAL-YEAR-END> DEC-31-1995 DEC-31-1996 DEC-31-1997 DEC-31-1998
<PERIOD-START> JAN-01-1995 JAN-01-1996 JAN-01-1997 JAN-01-1998
<PERIOD-END> DEC-31-1995 DEC-31-1996 DEC-31-1997 DEC-31-1998
<CASH> 15,243 12,455 12,376 12,875
<SECURITIES> 0 0 20,175 15,839
<RECEIVABLES> 21,934 22,115 40,576 17,055
<ALLOWANCES> (316) (382) (587) (622)
<INVENTORY> 21,173 18,832 33,833 23,528
<CURRENT-ASSETS> 60,578 56,249 110,849 77,745
<PP&E> 13,110 20,394 25,764 30,980
<DEPRECIATION> (4,886) (7,769) (9,981) (14,778)
<TOTAL-ASSETS> 71,888 72,517 136,545 107,736
<CURRENT-LIABILITIES> 19,133 12,884 33,661 14,520
<BONDS> 0 0 0 0
0 0 0 0
0 0 0 0
<COMMON> 26 26 27 29
<OTHER-SE> 49,841 56,469 99,942 92,134
<TOTAL-LIABILITY-AND-EQUITY> 71,888 72,517 136,545 107,736
<SALES> 130,184 138,074 188,339 134,019
<TOTAL-REVENUES> 130,184 138,074 188,339 134,019
<CGS> 69,241 88,368 116,683 94,000
<TOTAL-COSTS> 69,241 88,368 116,683 94,000
<OTHER-EXPENSES> 34,050 39,448 49,889 54,767
<LOSS-PROVISION> 0 0 0 0
<INTEREST-EXPENSE> 690 340 553 340
<INCOME-PRETAX> 26,451 10,183 20,893 (14,547)
<INCOME-TAX> 10,110 4,055 7,962 (3,522)
<INCOME-CONTINUING> 16,341 6,128 12,931 (11,025)
<DISCONTINUED> 0 0 0 0
<EXTRAORDINARY> 0 0 0 0
<CHANGES> 0 0 0 0
<NET-INCOME> 16,341 6,128 12,931 (11,025)
<EPS-BASIC> 0.71 0.24 0.49 (0.38)
<EPS-DILUTED> 0.68 0.23 0.48 (0.38)
<FN>
<F1> RESTATED PER POOLING MERGER OF ADVANCED ENERGY AND SEKIDENKO, INC. IN Q2
2000
</FN>
</TABLE>