BD239C NPN Power Transistor 100V 2A TO-220 Package

BD239C NPN Power Transistor 100V 2A TO-220 Package

The BD239C is a high-current NPN silicon power transistor designed for medium-to-high power amplification and switching applications. With a collector-emitter voltage of 100V and a collector current of up to 2A, it provides excellent current handling, low saturation voltage, and high thermal stability.

Housed in a TO-220 package, the BD239C offers efficient heat dissipation, making it suitable for audio amplifiers, voltage regulators, motor drivers, and general-purpose power switching circuits. Its high current capacity and reliable operation make it a preferred choice for industrial, hobbyist, and educational electronics projects.

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Features:

• Transistor Type: NPN Silicon Power Transistor
• Package: TO-220 (high thermal efficiency)
• Collector-Emitter Voltage (V_CE): 100V
• Collector Current (I_C): 2A
• Power Dissipation (P_tot): Up to 40W (with proper heatsink)
• DC Current Gain (hFE): 40–160 (typical, depending on operating conditions)
• Low Saturation Voltage: Efficient switching and amplification
• High Thermal Stability: Reliable operation under high current loads
• Durable & Reliable: Suitable for long-term professional and hobbyist use

Applications:

• Audio Amplifiers: Medium-to-high power output stages and driver circuits
• Voltage Regulators: Ensures stable voltage and current for circuits
• Relay & Motor Drivers: Efficiently drives motors, relays, and solenoids
• Signal Amplification: Low- and medium-frequency analog signals
• Power Switching Circuits: Ideal for moderate to high power switching applications
• Industrial & Hobby Projects: Reliable transistor for prototyping and experimentation

bd239-transistor-datasheet