2N6059 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: 12 A
• Collector Dissipation: 150 W
• DC Current Gain (h_fe): 750 to 18000
• Transition Frequency, min: 4 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.The complementary PNP transistor to the 2N6059 is the 2N6052.You can replace the 2N6059 with the 2N6284, 2N6284G, 2SC1584, 2SC1585, 2SC1586 or BD317.