BD439G Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 4 A
• Collector Dissipation: 36 W
• DC Current Gain (h_fe): 40 to 140
• Transition Frequency, min: 3 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.You can replace the BD439G with the 2N4922, 2N4922G, 2N4923, 2N4923G, BD189, BD439, BD441, BD441G, BD787, BD787G, BD789, BD791, MJE223, MJE224, MJE225, MJE240, MJE241, MJE242, MJE243, MJE243G or MJE244.Same transistor is also available in:

• TO-220 package, BD534J: 50 watts