BDW42 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 100 V
• Collector-Base Voltage, max: 100 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 15 A
• Collector Dissipation: 85 W
• DC Current Gain (h_fe): 1000
• Transition Frequency, min: 4 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 complementary PNP transistor to the BDW42 is the BDW47.You can replace the BDW42 with the BDW42G, BDW43, MJF6388 or MJF6388G.The BDW42G transistor is the lead-free version of the BDW42.