BDW73 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 45 V
• Collector-Base Voltage, max: 45 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 8 A
• Collector Dissipation: 80 W
• DC Current Gain (h_fe): 750 to 20000
• 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 BDW73 is the BDW74.The 2STF1550 (SOT-89) and 2STN1550 (SOT-223) is the SMD version of the BDW73 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BDW73 with the 2SD1158, BD201, BD203, BD301, BD303, BD533, BD535, BD537, BD543A, BD543B, BD545A, BD545B, BD643, BD645, BD647, BD795, BD797, BD799, BD807, BD809, BD895, BD895A, BD897, BD897A, BD899, BD899A, BDT81, BDT81F, BDT83, BDT83F, BDW73A, BDW73B, BDX33, BDX33A, BDX33B, BDX33BG, BDX53, BDX53A, BDX53B, BDX53BG, BDX77, D44H11, D44H11FP or D44H8.