2SB812-P Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -60 V
• Collector-Base Voltage, max: -60 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -4 A
• Collector Dissipation: 60 W
• DC Current Gain (h_fe): 120 to 250
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3P

Here is an image showing the pin diagram of this transistor.The 2SB812-P transistor can have a current gain of 120 to 250. The gain of the 2SB812 will be in the range from 40 to 250, for the 2SB812-Q it will be in the range from 70 to 150, for the 2SB812-R it will be in the range from 40 to 90.Sometimes the "2S" prefix is not marked on the package - the 2SB812-P might only be marked "B812-P".The complementary NPN transistor to the 2SB812-P is the 2SD1032-P.The BDP950 (SOT-223) is the SMD version of the 2SB812-P transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SB812-P with the 2SA1102, 2SA1292, 2SA1788, 2SB763, 2SB763-P, 2SB812A, 2SB812A-P, 2SB965, 2SB966, BD246A, BD246B, BD246C, BD250A, BD250B, BD250C, BDV92, BDV94, BDV96 or TIP36CA.