Central

Semiconductor Corp.

TM

TO-39 CASE - MECHANICAL OUTLINE

2N4237

2N4238

2N4239

NPN SILICON TRANSISTOR

R1 (22-February 2007)

LEAD CODE:

1) EMITTER

2) BASE

3) COLLECTOR

MARKING CODE:

FULL PART NUMBER

ELECTRICAL CHARACTERISTICS (Continued) (TC=25°C unless otherwise noted)

SYMBOL

TEST CONDITIONS

MIN

MAX

UNITS

hFE

VCE=1.0V, IC=50mA

30

hFE

VCE=1.0V, IC=250mA

30

250

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

MHz

Cob

VCB=10V, IE=0, f=0.1MHz

100

pF