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  Datasheet File OCR Text:
 INCHANGE Semiconductor
isc Product Specification
isc Silicon NPN Power Transistor
BD637
DESCRIPTION *DC Current Gain : hFE = 40(Min.)@ IC= 25mA *Collector-Emitter Breakdown Voltage: V(BR)CEO= 80V(Min.) *Complement to Type BD638
APPLICATIONS *Designed for amplifier and switching applications.
ABSOLUTE MAXIMUM RATINGS(Ta=25)
SYMBOL VCBO VCEO VEBO IC ICM IB
B
PARAMETER Collector-Base Voltage
Collector-Emitter Voltage Emitter-Base Voltage
Collector Current-Continuous Collector Current-Peak Base Current-Continuous Collector Power Dissipation @ Ta=25
w w
scs .i w
VALUE 100 80 5 2 5 0.3 2
UNIT V
.cn mi e
V V A A A
PC Collector Power Dissipation @ TC=25 TJ Tstg Junction Temperature Storage Temperature Range 30 150 -55~150
W

isc Websitewww.iscsemi.cn
INCHANGE Semiconductor
isc Product Specification
isc Silicon NPN Power Transistor
ELECTRICAL CHARACTERISTICS
TC=25 unless otherwise specified SYMBOL PARAMETER CONDITIONS MIN
BD637
MAX
UNIT
V(BR)CEO
Collector-Emitter Breakdown Voltage
IC= 30mA; IB= 0
80
V
V(BR)CBO
Collector-Base Breakdown Voltage
IC= 0.1mA; IE= 0
100
V
V(BR)EBO
Emitter-Base Breakdown Voltage
IE= 1mA; IC= 0
5
V
VCE(sat)
Collector-Emitter Saturation Voltage
IC= 1A; IB= 0.1A
B
0.6
V
VBE(on)
Base-Emitter On Voltage
IC= 1A; VCE= 2V
ICES
Collector Cutoff Current
hFE-1
DC Current Gain
hFE-2
DC Current Gain
w w
w.
sem isc
VCE= 100V; VBE= 0 IC= 25mA; VCE= 2V IC= 1A; VCE= 2V
.cn i
1.3
V
0.2
mA
40
25
isc Websitewww.iscsemi.cn
2


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