Power Transistor BD538 PNP, 4A TO-220

Power Transistor BD538 PNP, 4A TO-220

Transistors

Reference: TRBD538

Part.No: BD538

€1.20

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The BD538 is a PNP Power Bipolar Junction Transistor (BJT) in a TO-220 package. Built for reliable linear amplification and fast switching in power supply circuits, audio amplifiers, and industrial load-switching applications.

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Description
Product Details

BD538 Power Transistor - Switching & Amplification for Industrial Applications

The BD538 is a robust PNP power transistor widely used in switching regulators, audio amplifiers, and industrial load-control circuits. With a TO-220 package and excellent thermal characteristics when properly heatsinked, it delivers reliable performance across demanding power applications.

Functions & Applications

High Current Capability: Maximum collector current of 4A, suitable for driving moderate-power loads without additional buffering.
Linear & Switching Performance: Reliable in both amplification and on/off control applications.
TO-220 Heatsinkable Package: Easy thermal management for sustained operation in power circuits.
Industrial Grade: Durable construction for industrial environments when properly heatsinked.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	PNP
Package / Case	TO-220
Collector-Emitter Voltage (Vceo)	60V
Max Collector Current (Ic)	4A
Power Dissipation (Pd)	40W
Mounting Type	Through-Hole (THT) with Heatsink

Frequently Asked Questions

Q: Can the BD538 replace older TIP series PNP transistors?
A: Often yes, but always verify that the Vceo voltage and Ic current ratings of the replacement meet or exceed the original part's specifications. Cross-reference datasheets to ensure pin compatibility and thermal requirements.

Q: Does the BD538 require a heatsink for continuous operation?
A: Yes, when driving loads approaching its 4A maximum or in high-ambient-temperature environments, a heatsink is recommended to ensure thermal stability and long device life.

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: PNP
Transistor Case Style: TO-220

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