2N6673 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 400 V
• Collector-Base Voltage, max: 650 V
• Emitter-Base Voltage, max: 8 V
• Collector Current − Continuous, max: 8 A
• Collector Dissipation: 150 W
• DC Current Gain (h_fe): 10 to 40
• Transition Frequency, min: 60 MHz
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-3

Here is an image showing the pin diagram of this transistor.You can replace the 2N6673 with the 2N6678, 2SC2429, 2SC2429A, 2SC3045, 2SC3058, 2SC3058A, BUX48, BUX48A, MJ12021, MJ12022, MJ16006, MJ16008, MJ8504 or MJ8505.