2SB942A-Q 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: 40 W
• DC Current Gain (h_fe): 70 to 150
• Transition Frequency, min: 30 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 2SB942A-Q transistor can have a current gain of 70 to 150. The gain of the 2SB942A will be in the range from 40 to 250, for the 2SB942A-P it will be in the range from 120 to 250, for the 2SB942A-R it will be in the range from 40 to 90.Sometimes the "2S" prefix is not marked on the package - the 2SB942A-Q might only be marked "B942A-Q".The complementary NPN transistor to the 2SB942A-Q is the 2SD1267A-Q.The BDP952 (SOT-223) is the SMD version of the 2SB942A-Q transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SB942A-Q with the 2N6475, 2N6476, 2N6491, 2N6491G, 2SA1010, 2SA1077, 2SA1293, 2SA1308, 2SA1329, 2SA1388, 2SA1452, 2SA1452A, 2SA1488A, 2SA1634, 2SA1635, 2SA1725, 2SA1726, 2SA769, 2SA771, 2SB1016, 2SB1016A, 2SB1017, 2SB1018, 2SB1018A, 2SB1090, 2SB1367, 2SB1368, 2SB595, 2SB596, 2SB633, 2SB703, 2SB703A, 2SB708, 2SB747, 2SB762A, 2SB762A-Q, 2SB870, 2SB945, 2SB946, 2SB992, 2SB995, 2SB996, BD244B, BD244C, BD538, BD540B, BD540C, BD544B, BD544C, BD546B, BD546C, 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, D45H11, D45H11FP, KSA1010, KSB1017, KSB596, KSB708, KTA1038, KTA1049, KTB1367, KTB1368, MJE15029, MJE15029G, MJE15031, MJE15031G, MJF15031, MJF15031G, NTE153 or NTE292.