2SA1541-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: -0.2 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 2SA1541-C transistor can have a current gain of 40 to 80. The gain of the 2SA1541 will be in the range from 40 to 320, for the 2SA1541-D it will be in the range from 60 to 120, for the 2SA1541-E it will be in the range from 100 to 200, for the 2SA1541-F it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SA1541-C might only be marked "A1541-C".The complementary NPN transistor to the 2SA1541-C is the 2SC3956-C.The BST15 (SOT-89) is the SMD version of the 2SA1541-C transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA1541-C with the 2SA1156, 2SA1156M, KSA1156, KSA1156R, KSE350, MJE350 or MJE350G.