2SB1085-D 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 120
• 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 2SB1085-D transistor can have a current gain of 60 to 120. The gain of the 2SB1085 will be in the range from 60 to 320, for the 2SB1085-E it will be in the range from 100 to 200, for the 2SB1085-F it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SB1085-D might only be marked "B1085-D".The complementary NPN transistor to the 2SB1085-D is the 2SD1562-D.You can replace the 2SB1085-D with the 2N6476, 2SA1006, 2SA1006-R, 2SA1006A, 2SA1006A-R, 2SA1011, 2SA1011D, 2SA1077, 2SA1078, 2SA1304, 2SA1667, 2SA1668, 2SA1859, 2SA1859A, 2SA1964, 2SA1964-D, 2SA740, 2SA940, 2SA940A, 2SA985, 2SA985-R, 2SA985A, 2SA985A-R, 2SB1085A, 2SB1085A-D, 2SB1186A, 2SB1186A-D, 2SB546, 2SB546A, 2SB546A-L, 2SB547, 2SB630, 2SB630-R, 2SB861, 2SB861B, 2SB940, 2SB940-Q, 2SB940A, 2SB940A-Q, BD942, BD942F, BD956, BDT88, BDT88F, FJP1943, FJPF1943, KSA1304, KSA940, KSB546, MJE15029, MJE15029G, MJE15031, MJE15031G, MJF15031, MJF15031G, NTE292 or NTE398.