2SB1020 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: -7 A
• Collector Dissipation: 30 W
• DC Current Gain (h_fe): 2000 to 15000
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220F

Here is an image showing the pin diagram of this transistor.Sometimes the "2S" prefix is not marked on the package - the 2SB1020 might only be marked "B1020".The complementary NPN transistor to the 2SB1020 is the 2SD1415.You can replace the 2SB1020 with the 2N6042, 2N6042G, 2SB1020A, 2SB1228, 2SB673, 2SB886, BD544C, BD546C, BD650, BD652, BD802, BD902, BDT62B, BDT62C, BDT64B, BDT64C, BDT86, BDT86F, BDT88, BDT88F, BDW47, BDW47G, BDW48, BDW74C, BDW74D, BDX34C, BDX34CG, BDX34D, BDX54C, BDX54CG, BDX54D, BDX54E, BDX54F, MJE15029, MJE15029G, MJE15031, MJE15031G, MJF15031, MJF15031G, TIP107, TIP107G, TIP137, TIP137G, TIP147T or TTB1020B.