2SB944 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -130 V
• Emitter-Base Voltage, max: -7 V
• Collector Current − Continuous, max: -4 A
• Collector Dissipation: 35 W
• DC Current Gain (h_fe): 90 to 260
• 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 2SB944 transistor can have a current gain of 90 to 260. The gain of the 2SB944-P will be in the range from 130 to 260, for the 2SB944-Q it will be in the range from 90 to 180.Sometimes the "2S" prefix is not marked on the package - the 2SB944 might only be marked "B944".The complementary NPN transistor to the 2SB944 is the 2SD1269.You can replace the 2SB944 with the 2SA1488A, 2SA1634, 2SA1635, 2SA771, 2SB633, 2SB870, 2SB945, 2SB946, BD244B, BD244C, BD538, BD540B, BD540C, BD544B, BD544C, BD546B, BD546C, BD800, BD802, BD810, BD952, BD954, BD956, BDT84, BDT84F, BDT86, BDT86F, BDT88, BDT88F, BDX78, D44C10, D44C11, D44C12, D45C10, D45C11, D45C12, D45H11, D45H11FP, MJE15029, MJE15029G, MJE15031, MJE15031G, MJF15031 or MJF15031G.