2sa1257 ON Semiconductor, 2sa1257 Datasheet - Page 3

• Manufacturer Part Number: 2sa1257
• Description: Pnp/npn Epitaxial Planar Silicon Transistors
• Manufacturer: ON Semiconductor

1000
--
--
100
100
1.0
1.0
0.1
10
10
10
5
3
2
7
5
3
2
--
--
--
--
3
2
7
5
3
2
7
5
7
5
3
2
7
5
3
7
5
3
2
7
5
3
2
0.1
1.0
1.0
1.0
2
2
2
3
2
Collector-to-Base Voltage, V CB -- V
3
5
3
3
Collector Current, I C – mA
Collector Current, I C – mA
Collector Current, I C – mA
--
5
1.0
V CE (sat) -- I C
5
5
Cob -- V CB
7
h FE -- I C
2
f T -- I C
--
7
7
10
3
--
--
10
10
5
2
--
10
3
2
2
2
5
3
3
3
Rev.0 I Page 3 of 4 I www.onsemi.com
2SA1257
V CE = -- 10V
2SA1257
I C / I B = 10
7
2SA1257
V CE =--5V
5
2SA1257
f= 1MHz
--
5
2SA1257/2SC3143
5
100
ITR03132
ITR03134
ITR03136
ITR03138
--
100
7
7
--
--
100
100
2
2
1000
100
100
1.0
1.0
0.1
10
10
10
5
3
2
7
5
3
2
7
5
3
2
7
5
3
7
5
3
2
7
5
3
2
3
2
7
5
3
2
7
5
0.1
1.0
1.0
1.0
2
2
2
3
2
Collector-to-Base Voltage, V CB -- V
3
5
3
Collector Current, I C – mA
3
Collector Current, I C – mA
Collector Current, I C – mA
1.0
5
V CE (sat) -- I C
5
5
Cob -- V CB
7
h FE -- I C
2
f T -- I C
7
7
10
3
10
10
5
2
10
3
2
2
2
5
3
3
3
2SC3143
I C / I B = 10
7 100
2SC3143
V CE =10V
5
2SC3143
V CE =5V
2SC3143
f= 1MHz
5
5
ITR03133
ITR03135
ITR03137
ITR03139
100
7
7
100
100
2
2