CHENG- YI

CHENG- YI

ELECTRONIC

RATING AND CHARACTERISTICS CURVES

BA157 THRU BA159

BA157 thru BA159

FAST SWITCHING PLASTIC RECTIFIER

FAST SWITCHING PLASTIC RECTIFIER

Fig. 2 - FORWARD CURRENT DERATING CURVE

Fig. 3 - FORWARD CURRENT DERATING CURVE

Fig. 1 - REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM

INSTANTANEOUS FORWARD VOLTAGE, VOLTS

100

10

1

1

10

100

10

1.0

0.1

0.01

0.6

0.8

1.1

1.3

1.4

1.6

1.2

1.0

.8

.6

.4

.2

0

0

20

40

60

80

100

120

140

160

180

1.4

Fig. 4 - TYPICAL JUNCTION CAPACITANCE

REVERSE VOLTAGE. VOLTS

Fig. 5 - PEAK FORWARD SURGE CURRENT

NUMBER OF CYCLES AT 60Hz

50

NONINDUCTIVE

1

NON-

INDUCTIVE

NOTES : 1. Rise Time=7ns max., Input Impedance=

1 megohm, 22pF.

2. Rise Time=10ns max., Source Impedance=

50 ohms.

10

NONINDUCTIVE

D.U.T.

OSCILLOSCOPE

(NOTE 1)

PULSE

GENERATOR

(NOTE 2)

25 Vdc

(approx.)

(+)

(+)

()

()

SET TIME BASE

FOR 50 / 100ns/cm

1cm

-1.0A

-0.25

0

+0.5A

trr

30

24

18

12

6

1

2

4

6 8 10

20

40 60 80 100

Pulse Width=200 S

0

AMBIENT TEMPERATURE, C

MAXIMUNM AVERAGE CURRENT RATING

SINGLE PHASE, HALF-WAVE,60Hz RESISTIVE

OR INDUCTIVE LOAD .375"(9mm) LEAD LENGTH

0

T =25C

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