2N3902 View Datasheet(PDF) - New Jersey Semiconductor
Part Name
Description
MFG CO.
2N3902 Datasheet PDF : 2 Pages
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ELECTRICAL CHARACTERISTICS (con't)
Characteristics
Symbol
Min. Max.
ON CHARACTERISTICS^ (con't)
Forward-Current Transfer Ratio
Ic = 0.5 Adc; VCE = 5.0 Vdc
Ic= 1.0 Adc; VCE = 5.0 Vdc
25
b*
30
90
Ic = 2.5 Adc; VCE = 5.0 Vdc
10
Ic = 3.5 Adc; VCE = 5.0 Vdc
5
Collector-Emitter Sustaining Voltage
Ic = 100 mAdc
2N3902
v«_
325
2N5157
400
DYNAMIC CHARACTERISTICS
Small-Signal Short-Circuit Forward Current Transfer Ratio
Ic = 0.2 Adc; VCE = 10 Vdc, f = 1 MHz
Ihfel
2.5
25
Output Capacitance
VCB = 10 Vdc; IE = 0, 100 kHz < f < 1.0 MHz
c.bo
250
SWITCHING CHARACTERISTICS
Turn-On Time
Vcc = 125Vdc; Ic = 1.0 Adc; IBi= 0.1 Adc
ton
0.8
Turn -Off Time
Vcc = 125 Vdc; Ic = 1.0 Adc; Im = 0.1 Adc; -IB2 = 0.50 Adc
'off
1.7
SAFE OPERATING AREA
DC Tests (continuous)
Tc = +25°C; t > 1.0 s (See Figure 3 of MIL-PRF-19500/371)
Test 1
VCE = 28.6 Vdc, Ic = 3.5 Adc
Test!
VCE = 70 Vdc, Ic = 1.43 Adc
Test3
VCE = 325 Vdc, Ic = 55 mAdc
2N3902
VCE = 400 Vdc, Ic = 35 mAdc
2N5157
Switching Tests
Load condition C (undamped inductive load)
Tc= 25°C; duty cycle < 10%; Rs = 0.1 Q (See Figure 4 of MIL-PRF-19500/371)
Test 1
tp = approximately 3 ms (vary to obtain IQ; RBBI = 20 Q; VBBi = 10 Vdc; ReB2 = 3 kQ;
VBB: = 1.5 Vdc; Vcc = 50 Vdc; Ic = 3.5 Adc; L = 60 mH; R = 3 Q; RL < 14Q.
Test2
tp= approximately 3 ms (vary to obtain IQ; RBBI = 100 Q; VBBI = 10 Vdc, RBB2 = 3 kQ;
VBB2 = 1.5 Vdc; Ic = 0.6 Adc Vcc = 50 Vdc; L = 200 mH; R = 8 Q; RL < 83Q.
Switching Tests
Load condition (clamped inductive load)
Tc= +25°C; duty cycle < 10%. (See Figure 5 of MIL-PRF-19500/371)
Testl
tp= approximately 30 ms (vary to obtain IQ; Rs = 0.1 Q; RBB1 = 20 Q; VBBi = 10 Vdc; RBB2 = 100 Q;
VBB2 = 1.5 Vdc; Vcc = 50 Vdc; Ic = 3.5 Adc; L = 60 mH; R = 3 Q; RL > OQ.
(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 = 300(js, Duty Cycle < 2.0%.
Unit
" Vdc
PF
^
US
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