2SA1012Y Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -50 V
• Collector-Base Voltage, max: -60 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -5 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 120 to 240
• Transition Frequency, min: 10 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220

Here is an image showing the pin diagram of this transistor.The 2SA1012Y transistor can have a current gain of 120 to 240. The gain of the 2SA1012 will be in the range from 70 to 240, for the 2SA1012O it will be in the range from 70 to 140.Sometimes the "2S" prefix is not marked on the package - the 2SA1012Y might only be marked "A1012Y".The complementary NPN transistor to the 2SA1012Y is the 2SC2562Y.The 2SB1124 (SOT-89) and BDP950 (SOT-223) is the SMD version of the 2SA1012Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA1012Y with the 2SA1279, 2SA1279-Y, 2SA1289, 2SA1290, 2SA1291, 2SA1293, 2SA1293-Y, 2SA1307, 2SA1307-Y, 2SA1308, 2SA1308-Y, 2SA1328, 2SA1328-Y, 2SA1329, 2SA1329-Y, 2SA1388, 2SA1388-Y, 2SA1451, 2SA1451-Y, 2SA1451A, 2SA1451A-Y, 2SA1452, 2SA1452-Y, 2SA1452A, 2SA1452A-Y, 2SA1469, 2SA1470, 2SA1471, 2SA1742, 2SA1743, 2SA1744, 2SA1931, 2SA770, 2SA771, 2SB1016, 2SB1016-Y, 2SB1016A, 2SB1016A-Y, 2SB1018, 2SB1018-Y, 2SB1018A, 2SB1018A-Y, 2SB1019, 2SB1019-Y, 2SB1134, 2SB1135, 2SB1136, 2SB1367, 2SB1367-Y, 2SB553, 2SB553-Y, 2SB595, 2SB595-Y, 2SB633, 2SB824, 2SB825, 2SB826, 2SB870, 2SB945, 2SB946, 2SB992, 2SB992-Y, 2SB993, 2SB993-Y, 2SB995, 2SB995-Y, BD204, BD244A, BD244B, BD244C, BD304, BD536, BD538, BD540A, BD540B, BD540C, BD544A, BD544B, BD544C, BD546A, BD546B, BD546C, BD798, BD800, BD802, BD808, BD810, BD950, BD952, BD954, BDT82, BDT82F, BDT84, BDT84F, BDT86, BDT86F, BDX78, D45H11, D45H11FP, D45H8, KTA1038, KTA1038-Y, KTA1049, KTA1049Y, KTB1367, KTB1367Y, TTA1452B or TTB1452B.