Power Transistor BD436 PNP, 4A TO-126

Power Transistor BD436 PNP, 4A TO-126

Transistors

Reference: TRBD436

Part.No: BD436

€1.20

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The BD436 is a medium-power PNP Bipolar Junction Transistor (BJT) in a TO-126 package. It forms the complementary pair to the BD435 (NPN) and is widely used in audio output stages, push-pull driver circuits, and DC power supply applications.

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Description
Product Details

BD436 Power Transistor - Complementary PNP for Push-Pull Audio Stages

The BD436 is a medium-power PNP transistor designed for symmetrical push-pull output stages and driver circuits. As the direct complement to the NPN BD435, it delivers reliable performance in audio amplifiers, car audio systems, and industrial control applications requiring moderate current switching and amplification.

Functions & Applications

Complementary Pair: Perfect match with BD435 (NPN) for balanced push-pull topologies.
TO-126 Package: Efficient heat dissipation for medium-power applications without requiring a heatsink in many cases.
Audio-Grade Performance: Widely proven in car audio amplifiers, radio circuits, and pre-amplifier stages.
Moderate Current Rating: Handles up to 4A, ideal for output drivers and relay control circuits.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	PNP
Package / Case	TO-126
Collector-Emitter Voltage (Vceo)	45V
Max Collector Current (Ic)	4A
Power Dissipation (Pd)	12.5W
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: What is the complementary NPN pair for BD436?
A: The complementary NPN transistor is the BD435. Both share identical voltage and current ratings, making them ideal for symmetrical push-pull output stages.

Q: Can BD436 drive a 12V/5A load directly?
A: The BD436 can handle 4A maximum, so a 5A load exceeds its rating. For higher currents, use a Darlington pair or multiple transistors in parallel, always with current-limiting resistors.

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-126

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