Power Transistor (160V,
1.5A)
2SB1275 / 2SB1236A
Features
1) High breakdown voltage.(BV
CEO
=
160V)
2) Low collector output capacitance.
(Typ. 30pF at V
CB
= 10V)
3) High transition frequency.(f
T
= 50MH
Z
)
4) Complements the 2SD1918 / 2SD1857A.
Dimensions
(Unit : mm)
2SB1275
0.75
5.5
1.5
(3) (2) (1)
2.3
0.9
0.9
0.65
2.3
1.0
0.5
0.5
1.5
2.5
9.5
2.3
0.8Min.
5.1
6.5
C0.5
Absolute
maximum ratings
(Ta = 25C)
Parameter
Collector-base voltage
Collector-emitter voltage
Emitter-base voltage
Collector current
Collector
power
dissipation
2SB1275
P
C
2SB1236A
Tj
Tstg
Symbol
V
CBO
V
CEO
V
EBO
I
C
Limits
−160
−160
−5
−1.5
−3
1
10
1
150
−55
to
+150
Unit
V
V
V
A(DC)
A(Pulse)
W(Tc
=
25°C)
W
°C
°C
ROHM : CPT3
EIAJ : SC-63
(1) Base(Gate)
(2) Collector(Drain)
(3) Emitter(Source)
2SB1236A
∗
1
6.8
2.5
Junction temperature
Storage temperature
0.5
(1) (2) (3)
2.54 2.54
1.05
14.5
∗
2
0.65Max.
1.0
0.9
4.4
0.45
∗
1 Single pulse Pw=100ms
∗
2 Printed circuit board 1.7mm thick, collector plating 1cm
2
or larger.
Taping specifications
ROHM : ATV
(1) Emitter
(2) Collector
(3) Base
Packaging
specifications and h
FE
Type
Package
h
FE
Code
Basic ordering unit (pieces)
2SB1275
CPT3
P
TL
2500
2SB1236A
ATV
D
TV2
2500
Electrical
characteristics
(Ta = 25C)
Parameter
Collector-base breakdown voltage
Collector-emitter breakdown voltage
Emitter-base breakdown voltage
Collector cutoff current
Emitter cutoff current
Collector-emitter saturation voltage
DC current
transfer ratio
2SB1275
2SB1236A
Symbol
BV
CBO
BV
CEO
BV
EBO
I
CBO
I
EBO
V
CE(sat)
h
FE
f
T
Cob
Min.
Typ.
Max.
Unit
V
V
V
μA
μA
V
I
C
= −
50μA
I
C
= −
1mA
I
E
= −
50μA
V
CB
= −
120V
V
EB
= −
4V
I
C
/I
B
= −
1A/
−
0.1A
V
CE
= −
5V , I
C
= −
0.1A
V
CE
= −
5V , I
E
=
0.1A , f
=
30MHz
V
CB
= −
10V , I
E
=
0A , f
=
1MHz
∗
Conditions
−
160
−
160
−
5
−
−
−
82
100
−
−
−
−
−
−
−
−
50
30
−
−
−
−
1
−
1
−
2
180
200
−
−
MHz
pF
Transition frequency
Output capacitance
∗
Measured using pulse current.
−
−
−
−
www.rohm.com
c
○
2009 ROHM Co., Ltd. All rights reserved.
1/3
2009.12 - Rev.B
2SB1275 / 2SB1236A
Electrical
characteristics curves
−1.0
COLLECTOR CURRENT : I
C
(A)
Data Sheet
Ta=25°C
COLLECTOR CURRENT : I
C
(A)
−10
−5
V
CE
= −5V
1000
500
Ta
=
25°C
DC CURRENT GAIN : h
FE
−0.8
−10mA
−9mA
−8mA
−7mA
P
C
=1W
−2
−1
−0.5
−0.2
−0.1
−0.05
−0.02
−0.01
0
−0.2 −0.4 −0.6 −0.8 −1.0 −1.2 −1.4 −1.6 −1.8
BASE TO EMITTER VOLTAGE : V
BE
(V)
200
100
50
20
10
5
2
1
−0.01 −0.02
−0.05 −0.1 −0.2 −0.5
−1
−2
−5
−10
V
CE
= −10V
−0.6
−0.2
I
B
=
0mA
−3mA
−2mA
−1mA
0
0
−1
−2
−3
−4
−5
COLLECTOR TO EMITTER VOLTAGE : V
CE
(V)
25
°
C
−
25
°
C
−4mA
Ta
=
100
°
C
−0.4
−5mA
−
6mA
−5V
COLLECTOR CURRENT : I
C
(A)
Fig.1 Ground emitter output characteristics
Fig.2 Ground emitter propagation characteristics
Fig.3 DC current gain vs. collector current ( )
COLLECTOR SATURATION VOLTAGE : V
CE(sat)
(V)
COLLECTOR SATURATION VOLTAGE : V
CE(sat)
(V)
BASE SATURATION VOLTAGE : V
BE(sat)
(V)
1000
500
V
CE
= −10V
−10
−5
−2
−1
−0.5
−0.2
−0.1
−0.05
−0.02
−0.01
−0.01 −0.02
−0.05 −0.1 −0.2 −0.5
−1
20
10
I
C
/I
B
=50
Ta
=
25°C
−10
−5
−2
−1
Ta
= −
25°C
−0.5
−0.2
−0.1
−0.05
−0.02
−0.01
−0.01 −0.02
−0.05 −0.1 −0.2 −0.5
−1
−2
I
C
/I
B
=10
DC CURRENT GAIN : h
FE
200
100
50
20
10
5
2
Ta
=
100°C
25°C
25°C
V
BE(sat)
−
25°C
100°C
Ta
=
100°C
V
CE(sat)
−
25°C
25°C
1
−0.01 −0.02
−0.05 −0.1 −0.2 −0.5
−1
−2
−5
−10
−2
−5
−10
−5
−10
COLLECTOR CURRENT : I
C
(A)
COLLECTOR CURRENT : I
C
(A)
COLLECTOR CURRENT : I
C
(A)
Fig.4 DC current gain vs. collector current (
)
Fig.5 Collector-emitter saturation voltage
vs. collector current
Fig.6 Collector-emitter saturation voltage
vs. collector current
Base-emitter saturation voltage
COLLECTOR OUTPUT CAPACITANCE: C
ob
(pF)
1000
TRANSITION FREQUENCY : f
T
(MHz)
500
200
100
50
20
10
5
2
1
1
2
5
10
20
50
V
CE
= −5V
Ta
=
25°C
1000
500
200
100
50
20
10
5
2
1
−0.1 −0.2
−0.5
−1
−2
−5
COLLECTOR CURRENT : I
C
(A)
f=1MHz
I
E
=0A
Ta
=
25°C
−10
−5
−2
−1
−0.5
−0.2
−0.1
−0.05
−0.02
−0.01
Ic Max. (Pulse
∗
)
Pw=10ms
∗
100ms
∗
DC
100 200
500 1000
−10 −20
−50 −100
−0.005
Ta=25°C
∗
Single
NONREPETITIVE
−0.002
PULSE
−0.001
−0.1 −0.2 −0.5 −1 −2 −5 −10
−20 −50 −100 −200 −500 −1000
EMITTER CURRENT : I
E
(mA)
COLLECTOR TO BASE VOLTAGE : V
CB
(V)
COLLECTOR TO EMITTER VOLTAGE : V
CE
(V)
Fig.7 Resistance raito vs. emmiter current
Fig.8 Collector output capacitance vs.
collector-base voltage
Fig.9 Safe operating area (2SB1236A)
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c
○
2009 ROHM Co., Ltd. All rights reserved.
2/3
2009.12 - Rev.B
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, commu-
nication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
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The Products are not designed or manufactured to be used with any equipment, device or
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may result in a direct threat to human life or create a risk of human injury (such as a medical
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