2N6677 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 350 V
• Collector-Base Voltage, max: 550 V
• Emitter-Base Voltage, max: 8 V
• Collector Current − Continuous, max: 15 A
• Collector Dissipation: 175 W
• DC Current Gain (h_fe): 8
• Transition Frequency, min: 3 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 2N6677 with the 2N6547, 2N6678, 2SC2429, 2SC2429A, 2SC2920, 2SC3058, 2SC3058A, BUX48, BUX48A, BUX48B, BUX48C, MJ10000 or MJ10001.