1
Power Transistors
2SB938, 2SB938A
Silicon PNP epitaxial planar type Darlington
For power amplification and switching
Complementary to 2SD1261 and 2SD1261A
I
Features
G
High foward current transfer ratio h
FE
G
High-speed switching
G
N type package enabling direct soldering of the radiating fin to
the printed circuit board, etc. of small electronic equipment.
I
Absolute Maximum Ratings
(T
C
=25C)
Parameter
Symbol
Collector to
base voltage
Collector to
emitter voltage
Emitter to base voltage
Peak collector current
Collector current
Collector power
dissipation
Junction temperature
Storage temperature
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
I
Electrical Characteristics
(T
C
=25C)
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
μ
A
μ
A
mA
V
V
V
MHz
μ
s
μ
s
μ
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
1
±
0
1
2
1
±
0
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
2
1
3
Unit: mm
8.5
±
0.2
4
±
0
2
1
±
0
1
±
0
4
±
0
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
+
–
3
+
–
0 to 0.4
1.1 max.
R0.5
R0.5
1
2
3
1:Base
2:Collector
3:Emitter
N Type Package (DS)