2N6124 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -45 V
• Collector-Base Voltage, max: -45 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -4 A
• Collector Dissipation: 40 W
• DC Current Gain (h_fe): 25 to 100
• 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 NPN transistor to the 2N6124 is the 2N6121.You can replace the 2N6124 with the 2N6125, 2N6133, 2N6134, 2N6490, 2N6490G, 2N6491, 2N6491G, BD706, BD708, BD710, BD744, BD744A, BD744B, BD906, BD908, BD910, BDT92, BDT92F, BDT94, BDT94F, D44C10, D44C11, D44C12, D44C4, D44C5, D44C6, D44C7, D44C8, D44C9, D45C10, D45C11, D45C12, D45C4, D45C5, D45C6, D45C7, D45C8, D45C9, MJE2901T, MJE2955T, MJE2955TG, MJF2955 or MJF2955G.