2SB648-B Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -120 V
• Collector-Base Voltage, max: -180 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.05 A
• Collector Dissipation: 1 W
• DC Current Gain (h_fe): 60 to 120
• Transition Frequency, min: 140 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The 2SB648-B transistor can have a current gain of 60 to 120. The gain of the 2SB648 will be in the range from 60 to 320, for the 2SB648-C it will be in the range from 100 to 200, for the 2SB648-D it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SB648-B might only be marked "B648-B".The complementary NPN transistor to the 2SB648-B is the 2SD668-B.You can replace the 2SB648-B with the 2SA1021, 2SA1021-R, 2SA1220, 2SA1220-R, 2SA1220A, 2SA1220A-R, 2SA1352, 2SA1352-D, 2SA1380, 2SA1380-D, 2SA1404, 2SA1404-D, 2SA1405, 2SA1405-D, 2SA1406, 2SA1406-D, 2SA1407, 2SA1407-D, 2SA1408, 2SA1408-R, 2SA1478, 2SA1478-D, 2SA1538, 2SA1538-D, 2SA1539, 2SA1539-D, 2SA1540, 2SA1540-D, 2SA1541, 2SA1541-D, 2SB1109, 2SB1109-B, 2SB1110, 2SB1110-B, 2SB631K, 2SB631K-D, 2SB648A, 2SB648A-B, 2SB649, 2SB649-B, 2SB649A, 2SB649A-B, HSB1109, HSB1109-B, KSA1220, KSA1220-R, KSA1220A or KSA1220A-R.