Power Transistor BD518 NPN, TO-220

Power Transistor BD518 NPN, TO-220

Transistors

Reference: TRBD518

Part.No: BD518

€1.95

In Stock

Immediate Dispatch

The BD518 is a robust NPN Power Transistor in a TO-220 package, designed for power management and linear regulation applications. Its high current capability and excellent thermal characteristics make it ideal for voltage control circuits and industrial power supplies.

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Description
Product Details

BD518 Power Transistor – High-Current NPN for Power Supplies & Linear Regulators

The BD518 is a high-power NPN transistor engineered for demanding switching and linear regulation tasks. With its TO-220 heatsink-ready package, it delivers reliable performance in voltage regulators, power supplies, and industrial control circuits where substantial current handling is essential.

Functions & Applications

High Current Handling: Designed to manage substantial collector currents in power supply applications.
TO-220 Heatsink Package: Large thermal interface with metal tab for efficient heat dissipation via heatsink.
Power Management Ready: Excellent for linear voltage regulators and industrial control circuits.
Robust Collector-Emitter Voltage: Suitable for wide-range voltage regulation applications.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-220
Max Collector Current (Ic)	8A
Collector-Emitter Voltage (Vceo)	60V
Power Dissipation (Pd)	50W
Mounting Type	Through-Hole (THT) with Heatsink

Frequently Asked Questions

Q: Do I need a mica insulator for the BD518?
A: Yes. The metal tab of the TO-220 is internally connected to the Collector. Use a mica pad and plastic washer with the mounting screw to isolate the tab from the heatsink if the heatsink is not grounded to the collector.

Q: What is the typical use for the BD518 in a power supply?
A: The BD518 is commonly used as the pass transistor in linear voltage regulators and post-regulators where high current gain and stable thermal performance are critical.

Notes

The metal tab is internally connected to the Collector. Use an insulating mica pad and plastic washer when mounting to a heatsink to prevent unintended connection.

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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