KSA643CO 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): 70 to 140
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The KSA643CO 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 KSA643O.
Here is an image showing the pin diagram of this transistor.The KSA643CO transistor can have a current gain of 70 to 140. The gain of the KSA643C will be in the range from 40 to 400, for the KSA643CG it will be in the range from 200 to 400, 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.You can replace the KSA643CO with the 2N3702, 2N3703, 2N4951, 2N4954, 2SA1270, 2SA1270-O, 2SA562TM, 2SA562TM-O, 2SB598, 2SB698, KSB564AC, KSB564ACO, KSB810, KSB810-O, KSB811, KSB811-O, KTA1270, KTA1270O, MPS3638 or PN3638.