Continental Device India Limited
An IS/ISO 9002 and IECQ Certified Manufacturer
TO-220 Plastic Package
IS/ISO 9002
Lic# QSC/L- 000019.2
IS / IECQC 700000
IS / IECQC 750100
BD949, BD951, BD953, BD955
BD950, BD952, BD954, BD956
BD949, 951, 953, 955
BD950, 952, 954, 956
NPN PLASTIC POWER TRANSISTORS
PNP PLASTIC POWER TRANSISTORS
Power Amplifier and Switching Applications
PIN CONFIGURATION
1. BASE
2. COLLECTOR
3. EMITTER
4. COLLECTOR
4
1
2
3
B
H
F
C
E
DIM
A
B
C
D
E
F
G
H
J
K
L
M
N
O
MIN .
14.42
9.63
3.56
MAX.
N
L
O
1 2
3
D
G
J
M
16.51
10.67
4.83
0.90
1.15
1.40
3.75
3.88
2.29
2.79
2.54
3.43
0.56
12.70 14.73
2.80
4.07
2.03
2.92
31.24
DEG 7
A
O
ABSOLUTE MAXIMUM RATINGS
Collector-base voltage (open emitter)
V
CBO
Collector-emitter voltage (open base)
V
CEO
Collector current
I
C
Total power dissipation up to T
mb
= 25°C P
tot
Junction temperature
T
j
Collector-emitter saturation voltage
V
CEsat
I
C
= 2 A; I
B
= 0.2 A
D.C. current gain
h
FE
I
C
= 2 A; V
CE
= 4 V
RATINGS
(at T
A
=25°C unless otherwise specified)
Limiting values
Collector-base voltage (open emitter)
Collector-emitter voltage (open base)
Emitter-base voltage (open collector)
Collector current
V
CBO
V
CEO
V
EBO
I
C
All dimin sions in mm.
K
949
950
max. 60
max. 60
max.
max.
max.
max.
min.
949
950
max. 60
max. 60
max.
max.
951 953
952 954
80 100
80 100
5.0
40
150
1.0
20
951 953
952 954
80 100
80 100
5.0
5.0
955
956
120
120
V
V
A
W
°C
V
955
956
120
120
V
V
V
A
Continental Device India Limited
Data Sheet
Page 1 of 3
BD949, BD951, BD953, BD955
BD950, BD952, BD954, BD956
Collector current (Peak value)
Total power dissipation upto T
mb
=25°C
Junction temperature
Storage temperature
THERMAL RESISTANCE
From junction to ambient
From junction to mounting base
CHARACTERISTICS
T
amb
= 25°C unless otherwise specified
Collector cutoff current
I
E
= 0; V
CB
= V
CBO
I
E
= 0; V
CB
= ½ V
CBO
; Tj = 150°C
I
B
= 0; V
CE
= ½ V
CEO
Emitter cut-off current
I
C
= 0; V
EB
= 5 V
Breakdown voltages
I
C
= 1 mA; I
B
= 0
I
C
= 1 mA; I
E
= 0
I
E
= 1 mA; I
C
= 0
Saturation voltage
I
C
= 2 A; I
B
= 0.2 A
Base emitter on voltage
I
C
= 2 A; V
CE
= 4 V
D.C. current gain
I
C
= 0.5 A; V
CE
= 4 V
I
C
= 2 A; V
CE
= 4 V
Transition frequency
I
C
= 0.5 A; V
CE
= 4 V; f = 1 MHz
Switching time
V
CC
= 20 V; I
C
= 1 A
I
con
= 1A; I
Bon
= –I
Boff
= 0.1A
R
L
= 20Ω
Turn on time
NPN
Turn off time
NPN
PNP
PNP
I
CM
P
tot
T
j
T
stg
R
th j–a
R
th j–mb
max.
max.
max.
8.0
40
150
–65 to +150
70
3.12
A
W
°C
°C
K /W
K /W
949
950
I
CBO
I
CBO
I
CEO
I
EBO
V
CEO
V
CBO
V
EBO
V
CEsat
*
V
BE(on)
*
h
FE
*
h
FE
*
f
T
max.
max.
max.
max.
min. 60
min. 60
min.
max.
max.
min.
min.
min.
951
952
953
954
955
956
µA
mA
mA
mA
120
120
V
V
V
V
V
50
1.0
0.1
0.2
80
80
100
100
5.0
1.0
1.4
40
20
3
MHz
t
on
t
off
t
on
t
off
typ.
typ.
typ.
typ.
0.3
1.5
0.1
0.4
µs
µs
µs
µs
* Measured under pulse conditions: t
p
≤
300µs; duty cycle
≤
2%
Continental Device India Limited
Data Sheet
Page 2 of 3
Notes
Disclaimer
The product information and the selection guides facilitate selection of the CDIL's Discrete Semiconductor Device(s) best suited
for application in your product(s) as per your requirement. It is recommended that you completely review our Data Sheet(s) so as
to confirm that the Device(s) meet functionality parameters for your application. The information furnished on the CDIL Web Site/
CD is believed to be accurate and reliable. CDIL however, does not assume responsibility for inaccuracies or incomplete
information. Furthermore, CDIL does not assume liability whatsoever, arising out of the application or use of any CDIL product;
neither does it convey any license under its patent rights nor rights of others. These products are not designed for use in life
saving/support appliances or systems. CDIL customers selling these products (either as individual Discrete Semiconductor
Devices or incorporated in their end products), in any life saving/support appliances or systems or applications do so at their own
risk and CDIL will not be responsible for any damages resulting from such sale(s).
CDIL strives for continuous improvement and reserves the right to change the specifications of its products without prior notice.
CDIL is a registered Trademark of
Continental Device India Limited
C-120 Naraina Industrial Area, New Delhi 110 028, India.
Telephone + 91-11-579 6150 Fax + 91-11-579 9569, 579 5290
e-mail sales@cdil.com
www.cdil.com
Continental Device India Limited
Data Sheet
Page 3 of 3
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