2SB1185 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -50 V
• Collector-Base Voltage, max: -60 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -3 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 60 to 320
• Transition Frequency, min: 70 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.The 2SB1185 transistor can have a current gain of 60 to 320. The gain of the 2SB1185D will be in the range from 60 to 120, for the 2SB1185E it will be in the range from 100 to 200, for the 2SB1185F it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SB1185 might only be marked "B1185".The complementary NPN transistor to the 2SB1185 is the 2SD1762.You can replace the 2SB1185 with the 2SA1262, 2SA1488, 2SA1488A, 2SA1634, 2SA1635, 2SA770, 2SA771, 2SB1187, 2SB507, 2SB633, 2SB857, 2SB858, BD204, BD242A, BD242B, BD242C, BD244A, BD244B, BD244C, BD304, BD536, BD538, BD540A, BD540B, BD540C, BD544A, BD544B, BD544C, BD546A, BD546B, BD546C, BD798, BD800, BD802, BD808, BD810, BD950, BD952, BD954, BDT82, BDT82F, BDT84, BDT84F, BDT86, BDT86F, BDX78, D44C10, D44C11, D44C12, D44C7, D44C8, D44C9, D45C10, D45C11, D45C12, D45C7, D45C8, D45C9, D45H11, D45H11FP or D45H8.