2SB1566 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -50 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): 100 to 320
• Transition Frequency, min: 60 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 2SB1566 transistor can have a current gain of 100 to 320. The gain of the 2SB1566-E will be in the range from 100 to 200, for the 2SB1566-F it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SB1566 might only be marked "B1566".The complementary NPN transistor to the 2SB1566 is the 2SD2395.The 2SB1123 (SOT-89), 2SB1124 (SOT-89) and BDP950 (SOT-223) is the SMD version of the 2SB1566 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SB1566 with the 2SA1262, 2SA1488, 2SA1488A, 2SA1634, 2SA1635, 2SA1742, 2SA1743, 2SA1744, 2SA770, 2SA771, 2SB1185, 2SB1187, 2SB1375, 2SB1565, 2SB507, 2SB633, 2SB857, 2SB858, BD204, BD242A, BD242B, BD242C, BD244A, BD244B, BD244C, BD304, BD536, BD538, BD540A, BD540B, BD540C, BD544A, BD544B, BD544C, BD546A, BD546B, BD546C, BD798, BD800, BD802, BD808, BD810, BD950, BD952, BD954, BDT82, BDT82F, BDT84, BDT84F, BDT86, BDT86F, BDX78, D44C10, D44C11, D44C12, D44C7, D44C8, D44C9, D45C10, D45C11, D45C12, D45C7, D45C8, D45C9, D45H11, D45H11FP, D45H8 or KSB1366.