2SA1797
Transistors
Power Transistor (−50V,
−3A)
2SA1797
Features
1) Low saturation voltage.
V
CE (sat)
=
−0.35V
(Max.) at I
C
/ I
B
=
−1A
/
−50mA.
2) Excellent DC current gain characteristics.
3) Complements the 2SC4672.
External dimensions
(Unit : mm)
MPT3
4.5
1.6
0.5
1.5
(1)
(2)
(3)
1.0
Packaging specifications
Type
2SA1797
MPT3
PQ
AG
∗
T100
1000
(1)Base
(2)Collector
(3)Emitter
0.4
1.5
3.0
0.5
1.5
0.4
2.5
4.0
0.4
Package
h
FE
Marking
Code
Basic ordering unit (pieces)
∗Denotes
h
FE
Absolute maximum ratings
(Ta=25°C)
Parameter
Symbol
V
CBO
V
CEO
V
EBO
I
C
P
C
Tj
Tstg
+
Limits
−50
−50
−6
−3
−6
0.5
2
150
−55~+150
Unit
V
V
V
A (DC)
A (Pulse)
∗
1
W
∗
2
Collector-base voltage
Collector-emitter voltage
Emitter-base voltage
Collector current
Collector power 2SA1797
dissipation
Junction temperature
Storage temperature
+
°C
°C
∗1
Single pulse, Pw=10ms
∗2
When mounted on a 40 40 0.7mm ceramic board.
Electrical characteristics
(Ta=25°C)
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
Transition frequency
Output capacitance
∗
Measured using pulse current
Symbol
BV
CBO
BV
CEO
BV
EBO
I
CBO
I
EBO
V
CE(sat)
h
FE
f
T
Cob
Min.
−50
−50
−6
−
−
−
82
−
−
Typ.
−
−
−
−
−
−0.15
−
200
36
Max.
−
−
−
−0.1
−0.1
−0.35
270
−
−
Unit
V
V
V
µA
µA
V
−
MHz
pF
I
C
=−50µA
I
C
=−1mA
I
E
=−50µA
V
CB
=−50V
Conditions
V
EB
=−5V
I
C
/I
B
=−1A/−50mA
V
CE
/I
C
=−2V/−0.5A
V
CE
=−2V,
I
E
=0.5A,
f=100MHz
V
CB
=−10V,
I
E
=0A,
f=1MHz
∗
∗
Rev.B
1/2
2SA1797
Transistors
Electrical characteristic curves
2.0
Ta=25°C
COLLECTOR CURRENT : I
C
(
m
A)
mA
l
B
=
10
9mA
8mA
7mA
−10
−5
−2
−1
−0.2
−0.1
−0.05
−0.02
−0.01
−5m
−2m
−1m
0
0
°
C
V
CE
=2V
5000
COLLECTOR CURRENT : l
C
(A)
1.8
1.6
1.4
1.2
1
800m
600m
400m
200m
0
0
1
2
3
4
5
6
V
CE
=2V
2000
DC CURRENT GAIN : h
FE
1000
500
200
100
50
20
10
Ta=100
°C
−0.5
Ta
=
1
0
Ta
=
25
Ta
=−
4
6mA
5mA
4mA
3mA
2mA
1mA
0
°
C
°
C
Ta=25
°C
Ta=−40
°C
7
8
9
10
−0.2 −0.4 −0.6 −0.8 −1.0 −1.2 −1.4
5
-1m -5m -0.02 -0.1 -0.5
-2 -5-10
-2m -0.01 -0.05 -0.2
-1
COLLECTOR TO EMITTER VOLTAGE : V
CE
(V)
BASE TO EMITTER VOLTAGE : V
BE
(V)
COLLECTOR CURRENT : I
C
(A)
Fig.1 Grounded emitter output
characteristics
Fig.2 Grounded emitter propagation
characteristics
Fig.3 DC current gain vs.
collector current
COLLECTOR SATURATION VOLTAGE : V
CE (sat)
(V)
-1
-0.5
-0.2
Ta=100
°C
Ta=25
°C
Ta=−40
°C
10
COLLECTOR CURRENT : l
C
(A)
l
C
/l
B
=20
10ms
100ms
1
1ms
DC
0.1
-0.1
-0.05
-0.02
0.01
-0.01
-1m -5m -0.02 -0.1 -0.5 -2 -5-10
-2m -0.01 -0.05 -0.2
-1
0.001
Ta=25°C
Single non repetitive pulse
Mounted on epoxy board
t
12mm×15mm× 0.8mm
0.1
1
10
100
COLLECTOR CURRENT : I
C
(A)
COLLECTOR TO EMITTER VOLTAGE : V
CE
(V)
Fig.4 Collector-emitter saturation
voltage vs. collector current
Fig.5 Safe operating area
Rev.B
2/2
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1
Real-time operating system RTOS
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