2SA743A-C Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -80 V
• Emitter-Base Voltage, max: -4 V
• Collector Current − Continuous, max: -1 A
• Collector Dissipation: 8 W
• DC Current Gain (h_fe): 100 to 200
• Transition Frequency, min: 120 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 2SA743A-C transistor can have a current gain of 100 to 200. The gain of the 2SA743A will be in the range from 60 to 200, for the 2SA743A-B it will be in the range from 60 to 120.Sometimes the "2S" prefix is not marked on the package - the 2SA743A-C might only be marked "A743A-C".The complementary NPN transistor to the 2SA743A-C is the 2SC1212A-C.The 2SA1368 (SOT-89), 2SA1368-D (SOT-89), 2SB805 (SOT-89), 2SB805-KM (SOT-89), 2SD1006 (SOT-89), 2SD1006-HM (SOT-89), BCP53 (SOT-223), BCP53-16 (SOT-223), BCX53 (SOT-89), BCX53-16 (SOT-89), BSP33 (SOT-223), BSR33 (SOT-89), FMMTA56 (SOT-23), KST56 (SOT-23), MMBT4356 (SOT-23), MMBTA56 (SOT-23), PMBTA56 (SOT-23), PZTA56 (SOT-223) and SMBTA56 (SOT-23) is the SMD version of the 2SA743A-C transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA743A-C with the 2SA1021, 2SA1021-O, 2SA1184, 2SA1220, 2SA1220-Q, 2SA1220A, 2SA1220A-Q, 2SA1249, 2SA1249-R, 2SA1358, 2SA1408, 2SA1408-O, 2SA1507, 2SA1507-R, 2SA795, 2SB1144, 2SB1144-Q, 2SB1167, 2SB1167-R, 2SB1168, 2SB1168-R, 2SB631, 2SB631-E, 2SB631K, 2SB631K-E, 2SB649, 2SB649-C, 2SB649A, 2SB649A-C, BD140, BD140-16, BD140G, BD170, BD180, BD180G, BD231, BD238, BD238G, BD380, BD380-16, BD790, BD792, KSA1220, KSA1220-O, KSA1220A, KSA1220A-O, KSE172, KTA1700, KTA1704, KTA1704-Y, MJE172, MJE172G, MJE250, MJE252, MJE254 or MJE712.