BD543B Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 8 A
• Collector Dissipation: 70 W
• DC Current Gain (h_fe): 60
• 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 BD543B is the BD544B.You can replace the BD543B with the 2N6044, 2N6044G, 2N6045, 2N6045G, 2N6388, 2N6388G, 2N6530, 2N6531, 2N6532, 2N6533, 2SC2527, 2SC3346, 2SC3346-O, 2SC3346-Y, 2SC3710, 2SC3710-O, 2SC3710-Y, 2SC3710A, 2SC3710A-O, 2SC3710A-Y, 2SD1196, 2SD1277A, 2SD1277A-P, 2SD1277A-Q, 2SD1830, BD543C, BD545B, BD545C, BD647, BD649, BD651, BD899, BD899A, BD901, BDT63A, BDT63B, BDT63C, BDT65A, BDT65B, BDT65C, BDW41, BDW41G, BDW42, BDW42G, BDW43, BDW73B, BDW73C, BDW73D, BDW93B, BDW93C, BDW93CF, BDX33B, BDX33BG, BDX33C, BDX33CG, BDX33D, BDX53B, BDX53BG, BDX53C, BDX53CG, BDX53D, BDX53E, BDX53F, D44H11, D44H11FP, MJF6388, MJF6388G, TIP101, TIP101G, TIP102, TIP102G, TIP131, TIP131G, TIP132, TIP132G, TIP141T, TIP142T or TTC3710B.