2SB1154-R 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): 60 to 120
• 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-R transistor can have a current gain of 60 to 120. 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-Q it will be in the range from 90 to 180.Sometimes the "2S" prefix is not marked on the package - the 2SB1154-R might only be marked "B1154-R".You can replace the 2SB1154-R with the 2SA1141, 2SA1141-R, 2SA1860, 2SA1909, 2SB1161, 2SB1161-Q or FJAF4210.