2N4237 Datasheet, PDF (2/2 Pages) Boca Semiconductor Corporation – GENERAL PURPOSE TRANSISTOR (NPN SILICON)

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Semiconductor Corp.
2N4237
2N4238
2N4239
NPN SILICON TRANSISTOR
ELECTRICAL CHARACTERISTICS (Continued) (TC=25°C unless otherwise noted)
SYMBOL
TEST CONDITIONS
MIN
hFE
VCE=1.0V, IC=50mA
30
hFE
VCE=1.0V, IC=250mA
30
hFE
VCE=1.0V, IC=500mA
30
hFE
VCE=1.0V, IC=1.0A
15
hfe
VCE=10V, IC=100mA, f=1.0kHz
30
fT
VCE=10V, IC=100mA, f=1.0kHz
2.0
Cob
VCB=10V, IE=0, f=0.1MHz
MAX
250
100
UNITS
MHz
pF
TO-39 CASE - MECHANICAL OUTLINE
LEAD CODE:
1) EMITTER
2) BASE
3) COLLECTOR
MARKING CODE:
FULL PART NUMBER
R1 (22-February 2007)