2SB1224 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -60 V
• Collector-Base Voltage, max: -70 V
• Emitter-Base Voltage, max: -6 V
• Collector Current − Continuous, max: -7 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 2000
• Transition Frequency, min: 20 MHz
• 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 2SB1224 might only be marked "B1224".The complementary NPN transistor to the 2SB1224 is the 2SD1826.You can replace the 2SB1224 with the 2SB1020, 2SB1020A, 2SB1225, 2SB673, 2SB674, 2SB675, 2SB881, 2SB882, 2SB951, 2SB951-P, 2SB951-Q, 2SB951A, 2SB951A-P, 2SB951A-Q, MJF6668, MJF6668G or TTB1020B.