KSA643CG 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

The KSA643CG 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, collector, and base leads. Suffix "C" means center collector in KSA643G.
Here is an image showing the pin diagram of this transistor.The KSA643CG transistor can have a current gain of 200 to 400. The gain of the KSA643C will be in the range from 40 to 400, for the KSA643CO it will be in the range from 70 to 140, for the KSA643CR it will be in the range from 40 to 80, for the KSA643CY it will be in the range from 120 to 240.The complementary NPN transistor to the KSA643CG is the KSD261CG.You can replace the KSA643CG with the 2N4953, 2N4954, 2SA1282A, 2SA1296, 2SA1296-GR, 2SA1300, 2SA1300-GR, 2SA952, 2SA952-K, 2SB564, 2SB564K, 2SB598, 2SB698, KSB564AC, KSB564ACG, KSB810, KSB810-G, KSB811, KSB811-G, KTA1296, KTA1296-GR, MPS3638, MPS3638A, PN3638 or PN3638A.