refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
Publication Order Number:
BC237/D
1
January, 2006 − Rev. 4
BC237, BC237B, BC237C, BC239C
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C unless otherwise noted)
Characteristic
OFF CHARACTERISTICS
Collector −Emitter Breakdown Voltage
(I
C
= 2.0 mA, I
B
= 0)
Emitter −Base Breakdown Voltage
(I
E
= 100
mA,
I
C
= 0)
Collector Cutoff Current
(V
CE
= 30 V, V
BE
= 0)
(V
CE
= 50 V, V
BE
= 0)
(V
CE
= 30 V, V
BE
= 0) T
A
= 125°C
(V
CE
= 50 V, V
BE
= 0) T
A
= 125°C
ON CHARACTERISTICS
DC Current Gain
(I
C
= 10
mA,
V
CE
= 5.0 V)
(I
C
= 2.0 mA, V
CE
= 5.0 V)
(I
C
= 100 mA, V
CE
= 5.0 V)
Collector −Emitter On Voltage
(I
C
= 10 mA, I
B
= 0.5 mA)
(I
C
= 100 mA, I
B
= 5.0 mA)
Base −Emitter Saturation Voltage
(I
C
= 10 mA, I
B
= 0.5 mA)
(I
C
= 100 mA, I
B
= 5.0 mA)
Base−Emitter On Voltage
(I
C
= 100
mA,
V
CE
= 5.0 V)
(I
C
= 2.0 mA, V
CE
= 5.0 V)
(I
C
= 100 mA, V
CE
= 5.0 V)
DYNAMIC CHARACTERISTICS
Current −Gain — Bandwidth Product
(I
C
= 0.5 mA, V
CE
= 3.0 V, f = 100 MHz)
(I
C
= 10 mA, V
CE
= 5.0 V, f = 100 MHz)
Collector−Base Capacitance
(V
CB
= 10 V, I
C
= 0, f = 1.0 MHz)
Emitter−Base Capacitance
(V
EB
= 0.5 V, I
C
= 0, f = 1.0 MHz)
Noise Figure
(I
C
= 0.2 mA, V
CE
= 5.0 V, R
S
= 2.0 kW, f = 1.0 kHz)
(I
C
= 0.2 mA, V
CE
= 5.0 V, R
S
= 2.0 kW, f = 1.0 kHz,
Df
= 200 Hz)
BC239
BC237
BC239
f
T
BC237
BC239
BC237
BC239
C
obo
C
ibo
NF
−
−
−
2.0
2.0
2.0
4.0
10
4.0
−
−
150
150
−
−
100
140
200
280
−
8.0
−
−
−
−
4.5
−
pF
pF
dB
MHz
h
FE
BC237B
BC237C/239C
BC237
BC237B
BC237C/239C
BC237B
BC237C/239C
V
CE(sat)
BC237/BC239
BC237/BC239
V
BE(sat)
−
−
V
BE(on)
−
0.55
−
0.5
0.62
0.83
−
0.7
−
0.6
−
0.83
1.05
V
−
−
0.07
0.2
0.2
0.6
V
−
−
120
200
380
−
−
150
270
−
290
500
180
300
−
−
800
460
800
−
−
V
−
BC237
BC239
BC237
BC239
BC239
BC237
BC239
BC237
V
(BR)CEO
V
(BR)EBO
I
CES
−
−
−
−
0.2
0.2
0.2
0.2
15
15
4.0
4.0
nA
mA
45
25
6.0
5.0
−
−
−
−
−
−
−
−
V
V
Symbol
Min
Typ
Max
Unit
Figure 1.
http://onsemi.com
2
BC237, BC237B, BC237C, BC239C
2.0
hFE , NORMALIZED DC CURRENT GAIN
1.5
1.0
0.8
0.6
0.4
0.3
0.2
0.2
V
CE
= 10 V
T
A
= 25°C
V, VOLTAGE (VOLTS)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.5
1.0
2.0
5.0
10
20
50
I
C
, COLLECTOR CURRENT (mAdc)
100
200
0
0.1
V
CE(sat)
@ I
C
/I
B
= 10
0.2 0.3 0.5 0.7 1.0 2.0 3.0 5.0 7.0 10
20 30
I
C
, COLLECTOR CURRENT (mAdc)
50 70 100
T
A
= 25°C
V
BE(sat)
@ I
C
/I
B
= 10
V
BE(on)
@ V
CE
= 10 V
Figure 1. Normalized DC Current Gain
BANDWIDTH PRODUCT (MHz)
Figure 2. “Saturation” and “On” Voltages
400
300
C, CAPACITANCE (pF)
200
10
7.0
5.0
C
ib
T
A
= 25°C
100
80
60
40
30
20
0.5 0.7
1.0
V
CE
= 10 V
T
A
= 25°C
3.0
C
ob
2.0
f T, CURRENT−GAIN
2.0 3.0
5.0 7.0 10
20
I
C
, COLLECTOR CURRENT (mAdc)
30
50
1.0
0.4
0.6 0.8 1.0
2.0
4.0 6.0 8.0 10
V
R
, REVERSE VOLTAGE (VOLTS)
20
40
Figure 3. Current−Gain — Bandwidth Product
Figure 4. Capacitances
r b, BASE SPREADING RESISTANCE (OHMS)
170
160
150
V
CE
= 10 V
f = 1.0 kHz
T
A
= 25°C
140
130
120
0.1
0.2
0.3
0.5
1.0
2.0 3.0
I
C
, COLLECTOR CURRENT (mAdc)
5.0
10
Figure 5. Base Spreading Resistance
http://onsemi.com
3
BC237, BC237B, BC237C, BC239C
PACKAGE DIMENSIONS
TO−92 (TO−226)
CASE 29−11
ISSUE AL
A
R
P
L
SEATING
PLANE
B
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. CONTOUR OF PACKAGE BEYOND DIMENSION R
IS UNCONTROLLED.
4. LEAD DIMENSION IS UNCONTROLLED IN P AND
BEYOND DIMENSION K MINIMUM.
INCHES
MIN
MAX
0.175
0.205
0.170
0.210
0.125
0.165
0.016
0.021
0.045
0.055
0.095
0.105
0.015
0.020
0.500
−−−
0.250
−−−
0.080
0.105
−−− 0.100
0.115
−−−
0.135
−−−
MILLIMETERS
MIN
MAX
4.45
5.20
4.32
5.33
3.18
4.19
0.407
0.533
1.15
1.39
2.42
2.66
0.39
0.50
12.70
−−−
6.35
−−−
2.04
2.66
−−−
2.54
2.93
−−−
3.43
−−−
K
X X
G
H
V
1
D
J
C
SECTION X−X
N
N
DIM
A
B
C
D
G
H
J
K
L
N
P
R
V
STYLE 17:
PIN 1. COLLECTOR
2. BASE
3. EMITTER
ON Semiconductor
and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
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