2SB631-F Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -100 V
• Collector-Base Voltage, max: -100 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -1 A
• Collector Dissipation: 8 W
• DC Current Gain (h_fe): 160 to 320
• Transition Frequency, min: 130 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 2SB631-F transistor can have a current gain of 160 to 320. The gain of the 2SB631 will be in the range from 60 to 320, for the 2SB631-D it will be in the range from 60 to 120, for the 2SB631-E it will be in the range from 100 to 200.Sometimes the "2S" prefix is not marked on the package - the 2SB631-F might only be marked "B631-F".The complementary NPN transistor to the 2SB631-F is the 2SD600-F.The 2SA1368 (SOT-89), 2SA1368-E (SOT-89), 2SB805 (SOT-89), 2SB806 (SOT-89), 2SD1006 (SOT-89) and 2SD1007 (SOT-89) is the SMD version of the 2SB631-F transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SB631-F with the 2SA1021, 2SA1021-Y, 2SA1220, 2SA1220-P, 2SA1220A, 2SA1220A-P, 2SA1249, 2SA1507, 2SA795, 2SA795A, 2SB1144, 2SB1167, 2SB1168, 2SB631K, 2SB631K-F, 2SB649, 2SB649-D, KSA1220, KSA1220-Y, KSA1220A, KSA1220A-Y, KTA1704, KTA1704-GR or MJE254.