2SA744 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -80 V
• Emitter-Base Voltage, max: -6 V
• Collector Current − Continuous, max: -8 A
• Collector Dissipation: 70 W
• DC Current Gain (h_fe): 30
• Transition Frequency, min: 15 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-3

Here is an image showing the pin diagram of this transistor.Sometimes the "2S" prefix is not marked on the package - the 2SA744 might only be marked "A744".You can replace the 2SA744 with the 2N3792, 2N6051, 2N6052, 2N6052G, 2N6054, 2N6286, 2N6286G, 2N6287, 2N6287G, 2N6650, 2SA1007, 2SA1007-Q, 2SA1007-R, 2SA1007-S, 2SA1007-p, 2SA1007A, 2SA1007A-Q, 2SA1007A-R, 2SA1007A-S, 2SA1007A-p, 2SA1041, 2SA1043, 2SA1072, 2SA1072A, 2SA1073, 2SA679, 2SA679-R, 2SA679-Y, 2SA680, 2SA680-R, 2SA680-Y, 2SA745, 2SA745A, 2SA746, 2SA747, 2SA747A, 2SA753, 2SA753-A, 2SA753-B, 2SA753-C, 2SA907, 2SA908, 2SB555, 2SB555-O, 2SB555-R, 2SB556, 2SB556-O, 2SB556-R, 2SB557, 2SB557-O, 2SB557-R, 2SB696, 2SB696-C, 2SB696-D, 2SB696-E, 2SB696-F, 2SB697, 2SB697-C, 2SB697-D, 2SB697-E, 2SB697-F, 2SB697K, 2SB697K-C, 2SB697K-D, 2SB697K-E, 2SB697K-F, 2SB705, 2SB705-Q, 2SB705-R, 2SB705-S, 2SB705A, 2SB705A-Q, 2SB705A-R, 2SB705A-S, 2SB705B, 2SB705B-Q, 2SB705B-R, 2SB705B-S, 2SB722, BDW52B, BDW52C, BDX62A, BDX62B, BDX62C, BDX64A, BDX64B, BDX64C, BDX66A, BDX66B, BDX66C, BDX68A, BDX68B, BDX68C, MJ11013, MJ11013G, MJ11015, MJ11015G, MJ11017, MJ11031, MJ11031G, MJ11033, MJ11033G, MJ2501, MJ4031, MJ4032, MJ901, TIP606, TIP607, TIP646 or TIP647.