BDT41A Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 100 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 BDT41A is the BDT42A.You can replace the BDT41A with the BD707, BD709, BD711, BD907, BD909, BD911, BDT41AF, BDT41B, BDT41BF, BDT41C, BDT41CF, MJE5180, TIP41A, TIP41AG, TIP41B, TIP41BG, TIP41C, TIP41CF, TIP41CG, TIP41D or TIP42D.