2SB1154-Q Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -130 V
• Emitter-Base Voltage, max: -7 V
• Collector Current − Continuous, max: -10 A
• Collector Dissipation: 70 W
• DC Current Gain (h_fe): 90 to 180
• Transition Frequency, min: 30 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3PF

Here is an image showing the pin diagram of this transistor.The 2SB1154-Q transistor can have a current gain of 90 to 180. The gain of the 2SB1154 will be in the range from 60 to 260, for the 2SB1154-P it will be in the range from 130 to 260, for the 2SB1154-R it will be in the range from 60 to 120.Sometimes the "2S" prefix is not marked on the package - the 2SB1154-Q might only be marked "B1154-Q".The complementary NPN transistor to the 2SB1154-Q is the 2SD1705-Q.You can replace the 2SB1154-Q with the 2SA1141, 2SA1860, 2SA1860-Y, 2SA1909, 2SA1909-Y, 2SB1155, 2SB1155-Q, 2SB1156, 2SB1156-Q, 2SB1161, FJAF4210 or FJAF4210Y.