NTE158
Germanium PNP Transistor
Audio Power Amplifier
Description:
The NTE158 is a germanium PNP triode transistor in a TO1 type package designed for lowpower,
large signal audio applications.
Absolute Maximum Ratings: (T
A
= +25
C)
CollectorBase Voltage, V
CBO
32V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CollectorEmitter Voltage (R
BE
500
), V
CER
32V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EmitterBase Voltage, V
EBO
10V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Collector Current, I
C
1A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Current, I
B
40mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
A
= +25
C), P
C
550mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Above 25
C
0.3mW/
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
55
to +90
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead Temperature (During Soldering, 1/16"
1/32" from case for 5sec), T
L
+245
C
. . . . . . . . . . . . . .
Electrical Characteristics: (T
A
= +25
C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
CollectorBase Breakdown Voltage
V
(BR)CBO
I
C
= 200
A, I
E
= 0
32
V
EmitterBase Breakdown Voltage
V
(BR)EBO
I
E
= 200
A, I
C
= 0
10
V
Collector Cutoff Current
I
CBO
V
CB
= 10V, I
E
= 0
10
A
Emitter Cutoff Current
I
EBO
V
EB
= 5V, T
J
= +75
C
500
A
DC Current Gain
h
FE
V
CB
= 1V, I
C
= 300mA
60
90
175
BaseEmitter Voltage
V
BE
V
CE
= 1V, I
C
= 300mA
280
380
mV
Forward Current Transfer Cutoff
Frequency
f
hfe
10
20
kc
Output Capacitance
C
ob
V
CB
= 5V, I
E
= 0 @ 0.45mc
80
105
pF
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