(Pack of 5) BC639 NPN High Current Transistor 80V 1A TO-92 Package

(Pack of 5) BC639 NPN High Current Transistor 80V 1A TO-92 Package

The BC639 is a high-current NPN silicon transistor engineered for medium-to-high power amplification and switching applications. Each transistor in this pack of 5 delivers excellent performance, high voltage capability, and low saturation voltage — ideal for relay drivers, audio amplifiers, and signal switching circuits. Designed to operate with a collector-emitter voltage of 80V and a collector current up to 1A, the BC639 provides reliable and efficient performance in demanding applications. Its compact TO-92 package allows for easy integration into PCBs or breadboards, making it a perfect choice for professionals, hobbyists, and students.

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Features:

• Transistor Type: NPN Silicon
• Package: TO-92 Plastic Package
• Collector-Emitter Voltage (V_CE): 80V
• Collector Current (I_C): 1A
• DC Current Gain (hFE): 40–160 (typical, varies with operating conditions)
• Low Saturation Voltage (V_CE(sat)): Efficient power switching
• High Voltage Capability: Ideal for medium-to-high voltage circuits
• Compact TO-92 Package: Easy to mount and space-efficient
• Reliable & Durable: Ensures long-term stable operation
• Pack of 5: Great value for multiple projects or replacements

Applications:

• Relay & Motor Drivers: Efficiently drives small DC motors, relays, and solenoids
• Audio Amplifiers: Suitable for small and medium-power audio output stages
• Signal Switching: Reliable in high-voltage, low-current control applications
• Timers & Oscillators: Performs well in medium-power circuits
• Hobbyist & Educational Projects: Perfect for circuit building, experimentation, and learning
• General Electronics: Ideal for amplifier stages and power switching circuits

bc639-transistor-datasheet