BDT41 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 40 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 6 A
• Collector Dissipation: 65 W
• DC Current Gain (h_fe): 15 to 75
• Transition Frequency, min: 3 MHz
• 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 BDT41 is the BDT42.You can replace the BDT41 with the BD705, BD707, BD709, BD905, BD907, BD909, BDT41A, BDT41AF, BDT41B, BDT41BF, BDT41F, TIP41, TIP41A, TIP41AG, TIP41B, TIP41BG or TIP41G.