KSA643G Bipolar 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 (h_fe): 200 to 400
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92
• Electrically Similar to the Popular 2SA643G transistor

The KSA643G 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. The KSA643CG transistor (with suffix "C") is the center collector version of the KSA643G.
Here is an image showing the pin diagram of this transistor.The KSA643G transistor can have a current gain of 200 to 400. The gain of the KSA643 will be in the range from 40 to 400, for the KSA643O it will be in the range from 70 to 140, for the KSA643R it will be in the range from 40 to 80, for the KSA643Y it will be in the range from 120 to 240.The complementary NPN transistor to the KSA643G is the KSD261G.The 2SA643G is the TO-92 version of the KSA643G.You can replace the KSA643G with the 2SA643, 2SA643G, 2SB564A, 2SB564AGR, KSB564A, KSB564AG, MPS6535, MPS6651, MPS6651G, MPS6652, MPS6652G, MPS750, MPS750G, MPSW51, MPSW51A, MPSW51AG or MPSW51G.