2N3584 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 250 V
• Collector-Base Voltage, max: 375 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 2 A
• Collector Dissipation: 35 W
• DC Current Gain (h_fe): 25 to 100
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-66

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the 2N3584 is the 2N6421.You can replace the 2N3584 with the 2N3585, 2N6234 or 2N6235.