2SB1017-R Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -80 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -4 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 40 to 80
• Transition Frequency, min: 9 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 2SB1017-R transistor can have a current gain of 40 to 80. The gain of the 2SB1017 will be in the range from 40 to 240, for the 2SB1017-O it will be in the range from 70 to 140, for the 2SB1017-Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SB1017-R might only be marked "B1017-R".The complementary NPN transistor to the 2SB1017-R is the 2SD1408-R.The BDP952 (SOT-223) is the SMD version of the 2SB1017-R transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SB1017-R with the 2N6126, 2N6134, 2N6475, 2N6476, 2N6491, 2N6491G, 2SA1010, 2SA1010M, 2SA1488A, 2SA771, 2SB1016, 2SB1016-R, 2SB1090, 2SB1090-M, 2SB1367, 2SB1367-R, 2SB1368, 2SB1368-R, 2SB595, 2SB595-R, 2SB596, 2SB596-R, 2SB633, 2SB633-C, 2SB703, 2SB703-S, 2SB703A, 2SB703A-S, 2SB708, 2SB708-R, 2SB747, 2SB747-R, 2SB762A, 2SB762A-R, 2SB942A, 2SB942A-R, 2SB995, 2SB995-R, 2SB996, 2SB996-R, BD244B, BD244C, BD538, BD538K, BD540B, BD540C, BD710, BD712, BD744B, BD744C, BD800, BD802, BD810, BD910, BD912, BD952, BD954, BD956, BDT84, BDT84F, BDT86, BDT86F, BDT88, BDT88F, BDT94, BDT94F, BDT96, BDT96F, BDX78, D44C10, D44C11, D44C12, D45C10, D45C11, D45C12, KSA1010, KSA1010R, KSB1017, KSB1017-R, KSB596, KSB596-R, KSB708, KSB708-R, KTB1367, KTB1367R, KTB1368, KTB1368R, MJE15029, MJE15029G, MJE15031, MJE15031G, MJE5170, MJE5171, MJE5172, MJF15031, MJF15031G, MJF2955, MJF2955G, NTE153 or NTE292.