1
Motorola SmallSignal Transistors, FETs and Diodes Device Data
Amplifier Transistors
NPN Silicon
MAXIMUM RATINGS
Rating
Symbol
BC
237
BC
238
BC
239
Unit
Collector Emitter Voltage
VCEO
45
25
25
Vdc
Collector Emitter Voltage
VCES
50
30
30
Vdc
Emitter Base Voltage
VEBO
6.0
5.0
5.0
Vdc
Collector Current -- Continuous
IC
100
mAdc
Total Device Dissipation @ TA = 25
C
Derate above 25
C
PD
350
2.8
mW
mW/
C
Total Device Dissipation @ TC = 25
C
Derate above 25
C
PD
1.0
8.0
Watts
mW/
C
Operating and Storage Junction
Temperature Range
TJ, Tstg
55 to +150
C
THERMAL CHARACTERISTICS
Characteristic
Symbol
Max
Unit
Thermal Resistance, Junction to Ambient
R
q
JA
357
C/W
Thermal Resistance, Junction to Case
R
q
JC
125
C/W
ELECTRICAL CHARACTERISTICS
(TA = 25
C unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
Unit
OFF CHARACTERISTICS
Collector Emitter Breakdown Voltage
BC237
(IC = 2.0 mA, IB = 0)
BC238
BC239
V(BR)CEO
45
25
25
--
--
--
--
--
--
V
Emitter Base Breakdown Voltage
BC237
(IE = 100
m
A, IC = 0)
BC238
BC239
V(BR)EBO
6.0
5.0
5.0
--
--
--
--
--
--
V
Collector Cutoff Current
(VCE = 30 V, VBE = 0)
BC238
BC239
(VCE = 50 V, VBE = 0)
BC237
(VCE = 30 V, VBE = 0) TA = 125
C
BC238
BC239
(VCE = 50 V, VBE = 0) TA = 125
C
BC237
ICES
--
--
--
--
--
--
0.2
0.2
0.2
0.2
0.2
0.2
15
15
15
4.0
4.0
4.0
nA
A
Order this document
by BC237/D
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
BC237,A,B,C
BC238B,C
BC239,C
CASE 2904, STYLE 17
TO92 (TO226AA)
1
2
3
Motorola, Inc. 1996
COLLECTOR
1
2
BASE
3
EMITTER
REV 1
BC237,A,B,C BC238B,C BC239,C
2
Motorola SmallSignal Transistors, FETs and Diodes Device Data
ELECTRICAL CHARACTERISTICS
(TA = 25
C unless otherwise noted) (Continued)
Characteristic
Symbol
Min
Typ
Max
Unit
ON CHARACTERISTICS
DC Current Gain
(IC = 10
A, VCE = 5.0 V)
BC237A
BC237B/238B
BC237C/238C/239C
(IC = 2.0 mA, VCE = 5.0 V)
BC237
BC239
BC237A
BC237B/238B
BC237C/238C/239C
(IC = 100 mA, VCE = 5.0 V)
BC237A
BC237B/238B
BC237C/238C/239C
hFE
--
--
--
120
120
120
200
380
--
--
--
90
150
270
--
--
170
290
500
120
180
300
--
--
--
800
800
220
460
800
--
--
--
--
Collector Emitter On Voltage
(IC = 10 mA, IB = 0.5 mA)
BC237/BC238/BC239
(IC = 100 mA, IB = 5.0 mA)
BC237/BC239
BC238
VCE(sat)
--
--
0.07
0.2
0.2
0.6
0.8
V
Base Emitter Saturation Voltage
(IC = 10 mA, IB = 0.5 mA)
(IC = 100 mA, IB = 5.0 mA)
VBE(sat)
--
--
0.6
--
0.83
1.05
V
BaseEmitter On Voltage
(IC = 100
A, VCE = 5.0 V)
(IC = 2.0 mA, VCE = 5.0 V)
(IC = 100 mA, VCE = 5.0 V)
VBE(on)
--
0.55
--
0.5
0.62
0.83
--
0.7
--
V
DYNAMIC CHARACTERISTICS
Current Gain -- Bandwidth Product
(IC = 0.5 mA, VCE = 3.0 V, f = 100 MHz)
BC237
BC238
BC239
(IC = 10 mA, VCE = 5.0 V, f = 100 MHz)
BC237
BC238
BC239
fT
--
--
--
150
150
150
100
120
140
200
240
280
--
--
--
--
--
--
MHz
CollectorBase Capacitance
(VCB = 10 V, IC = 0, f = 1.0 MHz)
Cobo
--
--
4.5
pF
EmitterBase Capacitance
(VEB = 0.5 V, IC = 0, f = 1.0 MHz)
Cibo
--
8.0
--
pF
Noise Figure
(IC = 0.2 mA, VCE = 5.0 V, RS = 2.0 k
,
f = 1.0 kHz)
BC239
(IC = 0.2 mA, VCE = 5.0 V, RS = 2.0 k
,
f = 1.0 kHz,
f = 200 Hz)
BC237
BC238
BC239
NF
--
--
--
--
2.0
2.0
2.0
2.0
4.0
10
10
4.0
dB
BC237,A,B,C BC238B,C BC239,C
3
Motorola SmallSignal Transistors, FETs and Diodes Device Data
2.0
1.5
1.0
0.2
0.3
0.4
0.6
0.8
200
0.2
0.5
1.0
2.0
5.0
10
20
50
100
IC, COLLECTOR CURRENT (mAdc)
Figure 1. Normalized DC Current Gain
h
FE
, NORMALIZED DC CURRENT
GAIN
VCE = 10 V
TA = 25
C
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.2
0.1
0.3 0.5 0.7 1.0
2.0 3.0 5.0 7.0 10
20 30
50 70 100
IC, COLLECTOR CURRENT (mAdc)
Figure 2. "Saturation" and "On" Voltages
V
, VOL
T
AGE (VOL
TS)
TA = 25
C
VBE(sat) @ IC/IB = 10
VBE(on) @ VCE = 10 V
VCE(sat) @ IC/IB = 10
400
20
30
40
60
80
100
200
300
0.5
1.0
0.7
2.0
3.0
5.0 7.0
10
20
30
50
IC, COLLECTOR CURRENT (mAdc)
Figure 3. CurrentGain -- Bandwidth Product
f T
, CURRENTGAIN -- BANDWIDTH PRODUCT
(MHz)
C, CAP
ACIT
ANCE (pF)
10
1.0
2.0
3.0
5.0
7.0
0.4
0.6 0.8 1.0
2.0
4.0
6.0 8.0 10
20
40
VR, REVERSE VOLTAGE (VOLTS)
Figure 4. Capacitances
VCE = 10 V
TA = 25
C
TA = 25
C
Cib
Cob
r b
, BASE SPREADING RESIST
ANCE (OHMS)
170
160
150
140
130
120
10
0.1
0.2
0.3
0.5
1.0
2.0
3.0
5.0
IC, COLLECTOR CURRENT (mAdc)
Figure 5. Base Spreading Resistance
VCE = 10 V
f = 1.0 kHz
TA = 25
C
BC237,A,B,C BC238B,C BC239,C
4
Motorola SmallSignal Transistors, FETs and Diodes Device Data
PACKAGE DIMENSIONS
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. CONTOUR OF PACKAGE BEYOND DIMENSION R
IS UNCONTROLLED.
4. DIMENSION F APPLIES BETWEEN P AND L.
DIMENSION D AND J APPLY BETWEEN L AND K
MINIMUM. LEAD DIMENSION IS UNCONTROLLED
IN P AND BEYOND DIMENSION K MINIMUM.
R
A
P
J
L
F
B
K
G
H
SECTION XX
C
V
D
N
N
X X
SEATING
PLANE
DIM
MIN
MAX
MIN
MAX
MILLIMETERS
INCHES
A
0.175
0.205
4.45
5.20
B
0.170
0.210
4.32
5.33
C
0.125
0.165
3.18
4.19
D
0.016
0.022
0.41
0.55
F
0.016
0.019
0.41
0.48
G
0.045
0.055
1.15
1.39
H
0.095
0.105
2.42
2.66
J
0.015
0.020
0.39
0.50
K
0.500
12.70
L
0.250
6.35
N
0.080
0.105
2.04
2.66
P
0.100
2.54
R
0.115
2.93
V
0.135
3.43
1
CASE 02904
(TO226AA)
ISSUE AD
STYLE 17:
PIN 1. COLLECTOR
2. BASE
3. EMITTER
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit,
and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters can and do vary in different
applications. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does
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unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless
against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.
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BC237/D
*BC237/D*
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