2SB812-R 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): 40 to 90
• 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-R transistor can have a current gain of 40 to 90. The gain of the 2SB812 will be in the range from 40 to 250, for the 2SB812-P it will be in the range from 120 to 250, for the 2SB812-Q it will be in the range from 70 to 150.Sometimes the "2S" prefix is not marked on the package - the 2SB812-R might only be marked "B812-R".The complementary NPN transistor to the 2SB812-R is the 2SD1032-R.You can replace the 2SB812-R with the 2SB695, 2SB763, 2SB763-R, 2SB812A, 2SB812A-R, BD246A, BD246B, BD246C, BD250A, BD250B, BD250C, BD746A, BD746B, BD746C, BDV92, BDV94, BDV96, NTE391, TIP34A, TIP34B, TIP34C or TIP36CA.