2SB1144 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -100 V
• Collector-Base Voltage, max: -120 V
• Emitter-Base Voltage, max: -6 V
• Collector Current − Continuous, max: -1.5 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 100 to 400
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The 2SB1144 transistor can have a current gain of 100 to 400. The gain of the 2SB1144-Q will be in the range from 100 to 200, for the 2SB1144-S it will be in the range from 140 to 280, for the 2SB1144-T it will be in the range from 200 to 400.Sometimes the "2S" prefix is not marked on the package - the 2SB1144 might only be marked "B1144".The complementary NPN transistor to the 2SB1144 is the 2SD1684.You can replace the 2SB1144 with the 2SA1249, 2SA1507, 2SB1167, 2SB1168 or MJE254.