2SA1156K Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -400 V
• Collector-Base Voltage, max: -400 V
• Emitter-Base Voltage, max: -7 V
• Collector Current − Continuous, max: -0.5 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 100 to 200
• 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 2SA1156K transistor can have a current gain of 100 to 200. The gain of the 2SA1156 will be in the range from 30 to 200, for the 2SA1156L it will be in the range from 60 to 120, for the 2SA1156M it will be in the range from 40 to 80, for the 2SA1156N it will be in the range from 30 to 60.Sometimes the "2S" prefix is not marked on the package - the 2SA1156K might only be marked "A1156K".The PBHV9040T (SOT-23), PBHV9040X (SOT-89), PBHV9040Z (SOT-223) and STR2550 (SOT-23) is the SMD version of the 2SA1156K transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA1156K with the KSA1156, KSA1156Y, KTA1703 or KTA1703-Y.