RECTRON

RATING AND CHARACTERISTIC CURVES ( BA157 THRU BA159 )

FIG. 5 - TYPICAL JUNCTION CAPACITANCE

REVERSE VOLTAGE, ( V )

200

100

60

40

20

10

6

4

2

1

.1

.2

.4

1.0

2

4

10

20 40

100

TJ = 25

trr

+0.5A

0

-0.25A

-1.0A

1cm

SET TIME BASE FOR

50/100 ns/cm

FIG. 6 - TEST CIRCUIT DIAGRAM AND REVERSE

50

NONINDUCTIVE

10

NONINDUCTIVE

D.U.T

25 Vdc

(approx)

( - )

( - )

( + )

( + )

1

NON-

INDUCTIVE

OSCILLOSCOPE

(NOTE 1)

PULSE

GENERATOR

(NOTE 2)

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

1 megohm. 22pF.

2. Rise Time = 10ns max. Souce Impedance =

50 ohms.

RECOVERY TIME CHARACTERISTIC

FIG. 1 - TYPICAL FORWARD CURRENT

AMBIENT TEMPERATURE, (

)

DERATING CURVE

1.0

.8

.6

.4

.2

0

0

25

50

75

100

125

150

175

Single Phase

Half Wave 60Hz

Resistive or

Inductive Load

FIG. 3 - TYPICAL INSTANTANEOUS

FORWARD CHARACTERISTICS

INSTANTANEOUS FORWARD VOLTAGE, (V)

TJ = 25

Pulse Width=300uS

1% Duty Cycle

20

10

3.0

1.0

0.3

0.1

.03

.01

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

FIG. 4 - TYPICAL REVERSE CHARACTERISTICS

PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)

TJ = 25

10

.01

.02

.04

.06

.1

.2

.4

.6

1.0

2

4

6

0

20

40

60

80

100

120

140

FIG. 2 - MAXIMUM NON-REPETITIVE FORWARD

NUMBER OF CYCLES AT 60Hz

SURGE CURRENT

1

2

4

6 8 10

20

40 60 80 100

50

40

30

20

10

0

8.3ms Single Half Sine-Wave

(JEDED Method)