2SB1548 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -60 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): 70 to 250
• 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 2SB1548 transistor can have a current gain of 70 to 250. The gain of the 2SB1548-P will be in the range from 120 to 250, for the 2SB1548-Q it will be in the range from 70 to 150.Sometimes the "2S" prefix is not marked on the package - the 2SB1548 might only be marked "B1548".The complementary NPN transistor to the 2SB1548 is the 2SD2374.You can replace the 2SB1548 with the 2SA1262, 2SA1288, 2SA1289, 2SA1290, 2SA1291, 2SA1469, 2SA1470, 2SA1471, 2SA1488, 2SA1488A, 2SA1634, 2SA1635, 2SA770, 2SA771, 2SB1133, 2SB1187, 2SB1274, 2SB1548A, 2SB507, 2SB633, 2SB761, 2SB761A, 2SB762, 2SB762A, 2SB834, 2SB858, 2SB870, 2SB941, 2SB941A, 2SB942, 2SB942A, 2SB945, 2SB946, BD204, BD242A, BD242B, BD242C, BD244A, BD244B, BD244C, BD304, BD536, BD538, BD540A, BD540B, BD540C, BD544A, BD544B, BD544C, BD546A, BD546B, BD546C, BD798, BD800, BD802, BD808, BD810, BD936, BD936F, BD938, BD938F, BD940, BD940F, BD942, BD942F, BD950, BD952, BD954, BD956, BDT82, BDT82F, BDT84, BDT84F, BDT86, BDT86F, BDT88, BDT88F, BDX78, D44C10, D44C11, D44C12, D44C7, D44C8, D44C9, D45C10, D45C11, D45C12, D45C7, D45C8, D45C9, D45H11, D45H11FP, D45H8, KTB988, MJE15029 or MJE15029G.