2SA1743-M Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -60 V
• Collector-Base Voltage, max: -100 V
• Emitter-Base Voltage, max: -7 V
• Collector Current − Continuous, max: -10 A
• Collector Dissipation: 30 W
• DC Current Gain (h_fe): 100 to 200
• Transition Frequency, min: 80 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 2SA1743-M transistor can have a current gain of 100 to 200. The gain of the 2SA1743 will be in the range from 100 to 400, for the 2SA1743-K it will be in the range from 200 to 400, for the 2SA1743-L it will be in the range from 150 to 300.Sometimes the "2S" prefix is not marked on the package - the 2SA1743-M might only be marked "A1743-M".The complementary NPN transistor to the 2SA1743-M is the 2SC4551-M.You can replace the 2SA1743-M with the 2SA1077, 2SA1291, 2SA1291-R, 2SA1329, 2SA1452, 2SA1452A, 2SA1471, 2SA1471-R, 2SA1744, 2SA1744-M, BD546A, BD546B, BD546C, BD808, BD810, BDT82, BDT82F, BDT84, BDT84F, BDT86, BDT86F, BDT88, BDT88F, BDT92, BDT92F, BDT94, BDT94F, BDT96, BDT96F, D45H11, D45H11FP or D45H8.