Characteristics of 2SA643 Transistor
- Type: PNP
- Collector-Emitter Voltage, max: -20 V
- Collector-Base Voltage, max: -40 V
- Emitter-Base Voltage, max: -5 V
- Collector Current − Continuous, max: -0.5 A
- Collector Dissipation: 0.5 W
- DC Current Gain (hfe): 40 to 400
- Operating and Storage Junction Temperature Range: -55 to +150 °C
- Package: TO-92
Pinout of 2SA643
The 2SA643 is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, base, and collector leads.
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SA643 transistor can have a current gain of
40 to
400. The gain of the
2SA643G will be in the range from
200 to
400, for the
2SA643O it will be in the range from
70 to
140, for the
2SA643R it will be in the range from
40 to
80, for the
2SA643Y it will be in the range from
120 to
240.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SA643 might only be marked "
A643".
Complementary NPN transistor
The complementary
NPN transistor to the 2SA643 is the
2SD261.
2SA643 Transistor in TO-92 Package
The
KSA643 is the TO-92 version of the 2SA643.
Replacement and Equivalent for 2SA643 transistor
You can replace the 2SA643 with the
KSA643 or
MPS6535.
If you find an error please send an email to mail@el-component.com
