JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
TO-92 Plastic-Encapsulate Transistors
BC237/238/239
TRANSISTOR (NPN)
TO-92
FEATURES
Amplifier dissipation NPN Silicon
1.
COLLECTOR
2.
BASE
3.
EMITTER
1 2 3
MAXIMUM RATINGS (T
A
=25℃ unless otherwise noted)
Symbol
V
CEO
V
EBO
I
C
P
C
RθJA
RθJC
T
j
T
stg
Parameter
Collector-Emitter Voltage
Emitter-Base Voltage
Collector Current -Continuous
Collector Power Dissipation
Thermal Resistance,
Junction to Ambient
Thermal Resistance, Junction to Case
Junction Temperature
Storage Temperature
BC237
BC238/239
BC237
BC238/239
Value
45
25
6
5
0.1
350
357
125
150
-55-150
Units
V
V
A
mW
℃/W
℃/W
℃
℃
ELECTRICAL CHARACTERISTICS (Tamb=25℃ unless otherwise specified)
Parameter
Collector-base breakdown voltage
Collector-emitter breakdown voltage
Emitter-base breakdown voltage
Collector cut-off current
Symbol
V
(BR)CBO
V
(BR)CEO
V
(BR)EBO
I
CBO
Test
I
C
=100μA, I
E
=0
I
C
=2mA, I
B
=0
I
E
=100μA, I
C
=0
V
CE
=50V, V
BE
=0
V
CB
=30V,I
E
=0
V
CE
=5V, I
C
=10μA
h
FE(1)
V
CE
=5V, I
C
=2mA
DC current gain
h
FE(2)
conditions
BC237
BC238/239
BC237
BC238/239
BC237
BC238/239
BC237
BC238/239
BC237A
BC237B/238B
BC237C/238C/239C
BC237
BC239
BC237A
BC237B/238B
BC237C/238C/239C
V
CE
=5V, I
C
=100mA
h
FE(3)
BC237A
BC237B/238B
BC237C/238C/239C
I
C
=10mA, I
B
=0.5mA BC237/238/239
Collector-emitter saturation voltage
V
CE(sat)
I
C
=100mA, I
B
=5mA
I
C
=10mA,I
B
=0.5mA
I
C
=100mA,I
B
=5mA
V
CE
=5V, I
C
=0.1mA
Base-emitter voltage
V
BE
V
CE
=5V, I
C
=2mA
V
CE
=5V, I
C
=100mA
V
CE
=3V,I
C
=0.5mA,f=100MHz BC237
BC238
Transition frequency
f
T
BC239
V
CE
=5V,I
C
=10mA,f=100MHz BC237
BC238
BC239
Collector output capacitance
Emitter-base capacitance
C
ob
C
ib
V
CB
=10V, I
E
=0, f=1MHz
V
EB
=0.5V, I
C
=0, f=1MHz
V
CE
=5V, I
c
=0.2mA,
f=1kHZ, Rs=2KΩ
Noise figure
NF
V
CE
=5V, I
c
=0.2mA,
f=1kHZ, Rs=2KΩ,
Δf=200Hz
BC237
BC238
BC239
2
2
2
10
10
4
BC239
2
4
dB
8
150
150
150
0.55
0.83
100
120
140
200
240
280
4.5
pF
Pf
MHz
0.5
0.7
V
BC237/239
BC238
Base-emitter saturation voltage
V
BE(sat)
120
120
120
200
380
120
180
300
0.2
0.6
0.8
0.83
1.05
V
V
90
150
270
800
800
220
460
800
MIN
50
30
45
25
6
5
15
TYP
MAX
UNIT
V
V
V
nA