2SB646A-C Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -100 V
• Collector-Base Voltage, max: -120 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.05 A
• Collector Dissipation: 0.9 W
• DC Current Gain (h_fe): 100 to 200
• Transition Frequency, min: 140 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92MOD

Here is an image showing the pin diagram of this transistor.The 2SB646A-C transistor can have a current gain of 100 to 200. The gain of the 2SB646A will be in the range from 60 to 200, for the 2SB646A-B it will be in the range from 60 to 120.Sometimes the "2S" prefix is not marked on the package - the 2SB646A-C might only be marked "B646A-C".The complementary NPN transistor to the 2SB646A-C is the 2SD666A-C.You can replace the 2SB646A-C with the 2N5401C, 2SA1013, 2SA1013O, 2SA1017, 2SA1017E, 2SA1018, 2SA1018R, 2SA1024, 2SA1145, 2SA1207, 2SA1207-R, 2SA1208, 2SA1208-R, 2SA1275, 2SA1275-O, 2SA1284, 2SA1319, 2SA1319-R, 2SA1370, 2SA1370-E, 2SA879, 2SA879-R, 2SA949, 2SA965, 2SB1221, 2SB1221-R, 2SB647A, 2SB647AC, HSB1109S, HSB1109S-C, KSA1013, KSA1013O, KSA709C, KSA916, KTA1023, KTA1023-O, KTA1023-Y, KTA1024, KTA1275 or KTA1275O.