2N3902, 2N5157 JAN SERIES
ELECTRICAL CHARACTERISTICS (con’t)
Characteristics Symbol Min. Max. Unit
ON CHARACTERISTICS
(3)
(con’t)
Forward-Current Transfer Ratio
I
C
= 0.5 Adc; V
CE
= 5.0 Vdc
I
C
= 1.0 Adc; V
CE
= 5.0 Vdc
I
C
= 2.5 Adc; V
CE
= 5.0 Vdc
I
C
= 3.5 Adc; V
CE
= 5.0 Vdc
h
FE
25
30
10
5
90
Collector-Emitter Sustaining Voltage
I
C
= 100 mAdc 2N3902
2N5157
V
CEO(sus)
325
400
Vdc
DYNAMIC CHARACTERISTICS
Small-Signal Short-Circuit Forward Current Transfer Ratio
I
C
= 0.2 Adc; V
CE
= 10 Vdc, f = 1 MHz
h
fe
2.5 25
Output Capacitance
V
CB
= 10 Vdc; I
E
= 0, 100 kHz ≤ f ≤ 1.0 MHz
C
obo
250 pF
SWITCHING CHARACTERISTICS
Turn-On Time
V
CC
= 125 Vdc; I
C
= 1.0 Adc; I
B1
= 0.1 Adc
t
on
0.8
µs
Turn-Off Time
V
CC
= 125 Vdc; I
C
= 1.0 Adc; I
B1
= 0.1 Adc; -I
B2
= 0.50 Adc
t
off
1.7
µs
SAFE OPERATING AREA
DC Tests (continuous)
T
C
= +25
0
C; t ≥ 1.0 s (See Figure 3 of MIL-PRF-19500/371)
Test 1
V
CE
= 28.6 Vdc, I
C
= 3.5 Adc
Test 2
V
CE
= 70 Vdc, I
C
= 1.43 Adc
Test 3
V
CE
= 325 Vdc, I
C
= 55 mAdc 2N3902
V
CE
= 400 Vdc, I
C
= 35 mAdc 2N5157
Switching Tests
Load condition C (unclamped inductive load)
T
C
= 25
0
C; duty cycle ≤ 10%; R
S
= 0.1 Ω (See Figure 4 of MIL-PRF-19500/371)
Test 1
t
P
= approximately 3 ms (vary to obtain I
C)
; R
BB1
= 20 Ω; V
BB
1
= 10 Vdc; R
BB2
= 3 kΩ;
V
BB2
= 1.5 Vdc; V
CC
= 50 Vdc; I
C
= 3.5 Adc; L = 60 mH; R = 3 Ω; R
L
≤ 14Ω.
Test 2
t
P
= approximately 3 ms (vary to obtain I
C)
; R
BB1
= 100 Ω; V
BB1
= 10 Vdc; R
BB2
= 3 kΩ;
V
BB2
= 1.5 Vdc; I
C
= 0.6 Adc V
CC
= 50 Vdc; L = 200 mH; R = 8 Ω; R
L
≤ 83Ω.
Switching Tests
Load condition (clamped inductive load)
T
C
= +25
0
C; duty cycle ≤ 10%. (See Figure 5 of MIL-PRF-19500/371)
Test 1
t
P
= approximately 30 ms (vary to obtain I
C)
; R
S
= 0.1 Ω; R
BB1
= 20 Ω; V
BB
1
= 10 Vdc; R
BB2
= 100 Ω;
V
BB2
= 1.5 Vdc; V
CC
= 50 Vdc; I
C
= 3.5 Adc; L = 60 mH; R = 3 Ω; R
L
≥ 0Ω.
(A suitable clamping circuit or diode can be used.)
Clamp Voltage = 400 +0, -5 Vdc 2N3902
Clamp Voltage = 500 +0, -5 Vdc 2N5157
(Clamped voltage must be reached)
3.) Pulse Test: Pulse Width = 300µs, Duty Cycle ≤ 2.0%.
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