2SB546-Y Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -150 V
• Collector-Base Voltage, max: -200 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -2 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 120 to 240
• Transition Frequency, min: 5 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 2SB546-Y transistor can have a current gain of 120 to 240. The gain of the 2SB546 will be in the range from 40 to 240, for the 2SB546-O it will be in the range from 70 to 140, for the 2SB546-R it will be in the range from 40 to 80.Sometimes the "2S" prefix is not marked on the package - the 2SB546-Y might only be marked "B546-Y".The complementary NPN transistor to the 2SB546-Y is the 2SD401-Y.The PBHV9115T (SOT-23), PBHV9115X (SOT-89), PBHV9115Z (SOT-223) and PBHV9215Z (SOT-223) is the SMD version of the 2SB546-Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SB546-Y with the 2SA1667, 2SA1668, 2SA1859, 2SA1859A, 2SA1930, 2SB547, 2SB940, 2SB940-P, 2SB940A, 2SB940A-P, KSB546, KSB546-Y, KTB1369, KTB1369Y, MJE15031, MJE15031G, MJE15033, MJE15033G, MJE5850, MJE5850G, MJF15031 or MJF15031G.