1
Power Transistors
2SB938, 2SB938A
Silicon PNP epitaxial planar type Darlington
For power amplification and switching
Complementary to 2SD1261 and 2SD1261A
n
Features
l High foward current transfer ratio h
FE
l High-speed switching
l N type package enabling direct soldering of the radiating fin to
the printed circuit board, etc. of small electronic equipment.
n
Absolute Maximum Ratings (T
C
=25˚C)
Parameter
Collector to
base voltage
Collector to
emitter voltage
Emitter to base voltage
Peak collector current
Collector current
Collector power
dissipation
Junction temperature
Storage temperature
Symbol
V
CBO
V
CEO
V
EBO
I
CP
I
C
P
C
T
j
T
stg
Ratings
–60
–80
–60
–80
–5
–8
–4
40
1.3
150
–55 to +150
Unit
V
V
V
A
A
W
˚C
˚C
2SB938
2SB938A
2SB938
2SB938A
T
C
=25 C
Ta=25 C
n
Electrical Characteristics (T
C
=25˚C)
Parameter
Collector cutoff
current
Collector cutoff
current
Emitter cutoff current
Collector to emitter
voltage
Forward current transfer ratio
Base to emitter voltage
Collector to emitter saturation voltage
Transition frequency
Turn-on time
Storage time
Fall time
Symbol
I
CBO
I
CEO
I
EBO
V
CEO
h
FE1
h
FE2
*
V
BE
V
CE(sat)
f
T
t
on
t
stg
t
f
Conditions
V
CB
= –60V, I
E
= 0
V
CB
= –80V, I
E
= 0
V
CE
= –30V, I
B
= 0
V
CE
= –40V, I
B
= 0
V
EB
= –5V, I
C
= 0
I
C
= –30mA, I
B
= 0
V
CE
= –3V, I
C
= – 0.5A
V
CE
= –3V, I
C
= –3A
V
CE
= –3V, I
C
= –3A
I
C
= –3A, I
B
= –12mA
I
C
= –5A, I
B
= –20mA
V
CE
= –10V, I
C
= – 0.5A, f = 1MHz
I
C
= –3A, I
B1
= –12mA, I
B2
= 12mA
min
–60
–80
1000
2000
typ
15
0.3
2
0.5
max
–200
–200
–500
–500
–2
10000
–2.5
–2
–4
Unit
m A
m A
mA
V
V
V
MHz
m s
m s
m s
2SB938
2SB938A
2SB938
2SB938A
2SB938
2SB938A
*
h
FE2
Rank classification Internal Connection
Rank Q P
h
FE2
2000 to 5000 4000 to 10000
B
C
E
Unit: mm
1:Base
2:Collector
3:Emitter
N Type Package
8.5– 0.2
6.0– 0.5
10.0
–
0.3
10.5min.
2.0
1.5
–
0.1
1.5max.
0.8– 0.1
5.08– 0.5
2.54– 0.3
1.1max.
0.5max.
1.0– 0.1
3.4– 0.3
213
Unit: mm
8.5– 0.2
4.4
–
0.5 2.0
10.0
–
0.3
14.7
–
0.5
4.4
–
0.5
6.0– 0.3
3.4– 0.3
2.54– 0.3
5.08– 0.5
1.0– 0.1
0.8– 0.1
1.5
+0 –0.4
3.0
+0.4 –0.2
0 to 0.4
1.1 max.
R0.5
R0.5
123
1:Base
2:Collector
3:Emitter
N Type Package (DS)