BD743A Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 70 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 15 A
• Collector Dissipation: 90 W
• DC Current Gain (h_fe): 20 to 150
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-220

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the BD743A is the BD744A.You can replace the BD743A with the 2N6487, 2N6487G, 2N6488, 2N6488G, BD743B, BD743C, BD907, BD909 or BD911.