2SB1085A Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -120 V
• Collector-Base Voltage, max: -120 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -1.5 A
• Collector Dissipation: 20 W
• DC Current Gain (h_fe): 60 to 200
• Transition Frequency, min: 50 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220

Here is an image showing the pin diagram of this transistor.The 2SB1085A transistor can have a current gain of 60 to 200. The gain of the 2SB1085A-D will be in the range from 60 to 120, for the 2SB1085A-E it will be in the range from 100 to 200.Sometimes the "2S" prefix is not marked on the package - the 2SB1085A might only be marked "B1085A".The complementary NPN transistor to the 2SB1085A is the 2SD1562A.You can replace the 2SB1085A with the 2SA1006, 2SA1006A, 2SA1011, 2SA1077, 2SA1078, 2SA1667, 2SA1668, 2SA1859, 2SA1859A, 2SA1964, 2SA985, 2SA985A, 2SB1085, 2SB1186A, 2SB546, 2SB546A, 2SB547, 2SB630, 2SB861, 2SB940, 2SB940A, BD942, BD942F, BD956, BDT88, BDT88F, KSB546, MJE15029, MJE15029G, MJE15031, MJE15031G, MJF15031 or MJF15031G.