Dated : 19/07/2005

SEMTECH ELECTRONICS LTD.

(Subsidiary of Semtech International Holdings Limited, acompany

listed on the Hong Kong Stock Exchange, Stock Code: 724)

®

RATINGS AND CHARACTERISTIC CURVES

FIG.3-TYPICAL FORWARD

CHARACTERISTICS

INSTANTANEOUS FORWARD VOLTAGE,VOLTS

4

0.01

0.1

6

1.0

10

100

1.0

81.2

1.4

1.6

FIG.1-MAXIMUM FORWARD SURGE CURRENT

NUMBER OF CYCLES AT 60 Hz

200

1

0

50

100

150

250

300

10

100

FIG.2-DERATING CURVE FOR

OUTPUT RECTIFIED CURRENT

100

TEMPERATURE. ( C)

30

0

0

20

10

50

40

o

150

KBPC25005~KBPC2510