BA157 thru BA159
FFAASSTT SSWWIITTCCHHIINNGG PPLLAASSTTIICC RREECCTTIIFFIIEERR
CCHHEENNGG--YYII
ELECTRONIC
RATING AND CHARACTERISTICS CURVES
BA157 THRU BA159
Fig. 1 - REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM
t
rr
50
10
NONINDUCTIVE
+0.5A
NONINDUCTIVE
(
)
D.U.T.
0
(+)
PULSE
25 Vdc
GENERATOR
(NOTE 2)
(approx.)
(
)
-0.25
1
OSCILLOSCOPE
(NOTE 1)
(+)
NON-
INDUCTIVE
-1.0A
NOTES : 1. Rise Time=7ns max., Input Impedance=
1 megohm, 22pF.
SET TIME BASE
1cm
FOR 50 / 100ns/cm
2. Rise Time=10ns max., Source Impedance=
50 ohms.
Fig. 2 - FORWARD CURRENT DERATING CURVE
Fig. 3 - FORWARD CURRENT DERATING CURVE
10
1.6
1.4
MAXIMUNM AVERAGE CURRENT RATING
SINGLE PHASE, HALF-WAVE,60Hz RESISTIVE
OR INDUCTIVE LOAD.375"(9mm) LEAD LENGTH
1.2
1.0
.8
0
25 C
T
=
J
Pulse Width=200
S
.6
1.0
.4
.2
0
0
20
40
60
80
100
120
140
160
180
0
AMBIENT TEMPERATURE, C
0.1
0.01
0.6
0.8
1.1
1.3
1.4
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
Fig. 4 - TYPICAL JUNCTION CAPACITANCE
Fig. 5 - PEAK FORWARD SURGE CURRENT
100
30
24
0
18
12
6
T =25C
J
10
1
1
10
100
1
2
4
6
8 10
20
40 60 80100
REVERSE VOLTAGE. VOLTS
NUMBER OF CYCLES AT 60Hz
CHENG-YI [ CHENG-YI ELECTRONIC CO., LTD. ]
