Power Transistor BD529 NPN, 4A TO-220

Power Transistor BD529 NPN, 4A TO-220

Transistors

Reference: TRBD529

Part.No: BD529

€2.95

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The BD529 is a medium-power NPN Bipolar Junction Transistor (BJT) in a TO-220 package, designed for linear amplification and switching of moderate currents. Ideal for audio amplifiers, PWM LED drivers, and DC motor control.

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Description
Product Details

BD529 Power Transistor – Reliable Medium-Current Switching & Amplification

The BD529 is a workhorse medium-power NPN transistor, engineered for robust linear amplification and switching applications where currents exceed the capabilities of small-signal transistors. With proper heat management, it delivers reliable performance in audio stages, motor drivers, and PWM LED control circuits.

Functions & Applications

Medium-Power Capability: Handles continuous currents up to 4A, suitable for real-world load driving without overheating.
TO-220 Package with Heat Tab: Allows direct mounting to a heatsink for improved thermal dissipation in demanding applications.
Complementary Pair: Works seamlessly with the BD530 PNP transistor for push-pull amplifier stages.
Wide Voltage Range: Operates reliably across diverse power supply configurations in audio and industrial circuits.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-220
Max Collector Current (Ic)	4A
Collector-Emitter Voltage (Vceo)	80V
Power Dissipation (Pd)	12.5W
Mounting Type	Through-Hole (THT) with Heatsink Tab

Frequently Asked Questions

Q: Can the BD529 drive a DC motor directly?
A: Yes, the BD529 can switch up to 4A, making it suitable for small to medium DC motors. Always use a base resistor (typically 1kΩ–10kΩ) and a flyback diode across the motor coil to protect against inductive spikes.

Q: What is the complementary PNP partner for the BD529?
A: The BD530 is the complementary PNP transistor, allowing you to build push-pull amplifier stages with matched characteristics.

Notes

Requires heatsink for continuous operation at high currents; thermal management is essential to prevent junction temperature rise and ensure reliability.

Note: Price refers to one (1) piece. The component is shipped in bulk without individual packaging.

Transistor Type: BJT (Bipolar Junction Transistor)
Transistor Polarity / Channel: NPN
Transistor Case Style: TO-220

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