KSA642 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -25 V
• Collector-Base Voltage, max: -30 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.3 A
• Collector Dissipation: 0.4 W
• DC Current Gain (h_fe): 70 to 400
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92
• Electrically Similar to the Popular 2SA642 transistor

The KSA642 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 KSA642C transistor (with suffix "C") is the center collector version of the KSA642.
Here is an image showing the pin diagram of this transistor.The KSA642 transistor can have a current gain of 70 to 400. The gain of the KSA642G will be in the range from 200 to 400, for the KSA642O it will be in the range from 70 to 140, for the KSA642Y it will be in the range from 120 to 240.The complementary NPN transistor to the KSA642 is the KSD227.The 2SA642 is the TO-92 version of the KSA642.You can replace the KSA642 with the 2SA642, 2SB564A, KSB564A, MPS6535, MPS6651, MPS6651G, MPS6652, MPS6652G, MPSW51, MPSW51A, MPSW51AG or MPSW51G.