onsemi

BD239C

BD239C Description

The BD239C from onsemi is a robust NPN bipolar junction transistor (BJT) designed for medium-power applications. Housed in a TO-220-3 package, it offers a collector-emitter voltage (Vce) rating of 100V and a maximum collector current (Ic) of 2A, making it suitable for switching and amplification tasks in demanding environments. With a power dissipation capability of 30W and an operating junction temperature (TJ) of up to 150°C, this transistor ensures reliable performance under high thermal stress. Its low Vce saturation voltage (700mV @ 1A) and moderate DC current gain (hFE ≥ 15 @ 1A, 4V) enhance efficiency in linear and switching circuits.

BD239C Features

• High Voltage & Current Handling: Supports 100V Vce and 2A Ic, ideal for power regulation.
• Low Saturation Voltage: 700mV @ 1A minimizes power loss in switching applications.
• Thermal Resilience: 30W power dissipation and 150°C TJ ensure stability in high-temperature environments.
• Compliance & Reliability: ROHS3 compliant, REACH unaffected, and EAR99 classified for broad industrial use.
• Through-Hole Mounting: TO-220-3 package simplifies heat sinking and mechanical integration.

BD239C Applications

The BD239C excels in:

• Power Supplies: Linear regulators, voltage stabilizers, and DC-DC converters.
• Motor Control: Driver stages for small motors and solenoids.
• Audio Amplifiers: Output stages in Class AB amplifiers due to its moderate gain.
• Switching Circuits: Relay drivers, LED drivers, and inductive load switches.
• Industrial Systems: Robust enough for automation controls and power management.

Conclusion of BD239C

The BD239C stands out as a versatile, high-performance NPN transistor for medium-power applications requiring thermal endurance and efficiency. Its low saturation voltage, high voltage tolerance, and compliance with environmental standards make it a preferred choice for engineers designing power electronics, motor controls, and audio systems. With onsemi's proven reliability, this transistor is a dependable component for both prototyping and mass production.