STMicroelectronics NPN Power Transistor, 500 mA, 300 V, Surface Mount TO-252 Package MJD340T4

STMicroelectronics MJD340T4 is a robust NPN power transistor engineered for applications demanding reliable switching and amplification at currents up to 500 mA and voltages up to 300 volts. Housed in a TO-252 surface-mount package, it is suited for compact and automated PCB assembly processes.

This transistor exhibits a maximum power dissipation capability of 15 W, making it appropriate for power management roles within industrial controls and general-purpose switching circuits. It provides a minimum DC current gain (hFE) of 30 ensuring solid performance characteristics.

The device’s three-pin configuration and surface mount design enable efficient thermal dissipation and ease system integration. Its operating temperature range from 0° to 150° Celsius supports reliability in demanding industrial, consumer electronics, and automotive environments.

Typical uses include power switching, load driving, signal amplification, and other electronic functions in manufacturing, instrumentation, and electronic component assembly. TO-252 surface-mount package for compact mounting.

Supports collector current up to 500 mA and voltage up to 300 V. Maximum power dissipation of 15 W for thermal stability. Minimum DC current gain of 30 for reliable switching. Operating temperature range 0°C to 150°C suitable for industrial use.

Three-pin configuration for easy PCB layout integration. NPN transistor polarity compatible with standard circuits. Compact dimensions improve assembly and device footprint.

This transistor is a part of the MJD340 series by STMicroelectronics, trusted for quality and durability in power semiconductor applications. It’s ideal for electronic design engineers and industrial equipment manufacturers requiring consistent transistor performance.

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