2SA1540-C Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -200 V
• Collector-Base Voltage, max: -200 V
• Emitter-Base Voltage, max: -3 V
• Collector Current − Continuous, max: -0.1 A
• Collector Dissipation: 7 W
• DC Current Gain (h_fe): 40 to 80
• Transition Frequency, min: 300 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126F

Here is an image showing the pin diagram of this transistor.The 2SA1540-C transistor can have a current gain of 40 to 80. The gain of the 2SA1540 will be in the range from 40 to 320, for the 2SA1540-D it will be in the range from 60 to 120, for the 2SA1540-E it will be in the range from 100 to 200, for the 2SA1540-F it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SA1540-C might only be marked "A1540-C".The complementary NPN transistor to the 2SA1540-C is the 2SC3955-C.You can replace the 2SA1540-C with the 2SA1156, 2SA1156M, 2SA1352, 2SA1352-C, 2SA1353, 2SA1353-C, 2SA1380, 2SA1380-C, 2SA1381, 2SA1381-C, 2SA1406, 2SA1406-C, 2SA1407, 2SA1407-C, 2SA1478, 2SA1478-C, 2SA1479, 2SA1479-C, 2SA1480, 2SA1480-C, 2SA1541, 2SA1541-C, KSA1156, KSA1156R, KSA1381, KSA1381-C, KSE350, MJE350 or MJE350G.