TECHNICAL DATA
NPN MEDIUM POWER SILICON TRANSISTOR
Qualified per MIL-PRF-19500/581
Devices
2N4237
2N4238
2N4239
Qualified Level
JANTX
JANTXV
MAXIMUM RATINGS (T
A
= 25
0
C Unless Otherwise noted)
Ratings
Symbol 2N4237 2N4238 2N4239 Units
Collector-Emitter Voltage
Collector-Base Voltage
Emitter-Base Voltage
Collector Current
Base Current
Total Power Dissipation @ T
A
= +25
0
C
(1)
@ T
C
= +25
0
C
(2)
Operating & Storage Temperature Range
V
CEO
V
CBO
V
EBO
I
C
I
B
P
T
T
op
,
T
stg
Symbol
R
θ
JC
40
50
60
80
6.0
1.0
0.5
1.0
6.0
-65 to +200
Max.
29
80
100
Vdc
Vdc
Vdc
Adc
Adc
W
W
°C
Unit
C/W
TO-39*
THERMAL CHARACTERISTICS
Characteristics
Thermal Resistance, Junction-to-Case
1) Derate linearly 5.7 mW/
0
C for T
A
> +25
0
C
2) Derate linearly 34 mW/
0
C for T
C
> +25
0
C
0
*See appendix A for
package outline
ELECTRICAL CHARACTERISTICS (T
A
= 25
0
C unless otherwise noted)
Characteristics
Symbol
Min.
Max.
Unit
OFF CHARACTERISTICS
Collector-Emitter Breakdown Voltage
2N4237
I
C
= 100 mAdc
2N4238
2N4239
Emitter-Base Cutoff Current
V
EB
= 6.0 Vdc
Collector-Emitter Cutoff Current
V
CE
= 90 Vdc, V
BE
= 1.5 Vdc
2N4237
V
CE
= 50 Vdc
2N4238
V
CE
= 80 Vdc
2N4239
V
CE
= 10 Vdc
Collector-Base Cutoff Current
2N4237
V
CE
= 50 Vdc
2N4238
V
CE
= 80 Vdc
2N4239
V
CE
= 10 Vdc
V
(
BR
)
CEO
50
80
100
0.5
Vdc
I
EBO
mAdc
I
CEX
100
100
100
100
100
100
nAdc
I
CBO
nAdc
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 794-1666 / Fax: (978) 689-0803
120101
Page 1 of 2
2N4237, 4238, 4239 JAN, JANTX, JANTXV
ELECTRICAL CHARACTERISTICS (con’t)
Characteristics
Symbol
Min.
Max.
Unit
ON CHARACTERISTICS
(3)
Forward Current Transfer Ratio
I
C
= 250 mAdc, V
CE
= 1.0 Vdc
I
C
= 500 mAdc, V
CE
= 1.0 Vdc
Collector-Emitter Saturation Voltage
I
C
= 500 Adc, I
B
= 50 Adc
I
C
= 1.0 Adc, I
B
= 0.1 Adc
Base-Emitter Saturation Voltage
I
C
= 500 Adc, I
B
= 50 Adc
I
C
= 1.0 Adc, I
B
= 0.1 Adc
h
FE
30
30
150
V
CE(sat)
0.3
0.6
1.0
1.5
Vdc
V
BE(sat)
Vdc
DYNAMIC CHARACTERISTICS
Magnitude of Common Emitter Small-Signal
Short Circuit Forward-Current Transfer Ratio
I
C
= 100 mAdc, V
CE
= 10 Vdc, f = 10 MHz
Output Capacitance
V
CB
= 10 Vdc, I
E
= 0, f = 100 kHz
h
fe
C
obo
3.0
100
pF
SAFE OPERATING AREA
DC Tests
T
C
= +25
0
C, 1 Cycle, t
≥
0.5 s
Test 1
V
CE
= 6.0 Vdc, I
C
= 1.0 Adc
Test 2
V
CE
= 12 Vdc, I
C
= 500 mAdc
Test 3
V
CE
= 30 Vdc, I
C
= 166 mAdc
V
CE
= 50 Vdc, I
C
= 100 mAdc
2N4237
2N4238
V
CE
= 70 Vdc, I
C
= 71 mAdc 2N4239
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 794-1666 / Fax: (978) 689-0803
120101
Page 2 of 2
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