MJD340T4 NPN Power Transistor DPAK

The MJD340T4 is a high-voltage, high-current NPN bipolar junction transistor (BJT) from onsemi, designed primarily for general-purpose power switching and amplifier applications. Encased in a surface-mount TO-252 (DPAK) package, it offers excellent thermal performance and reliable operation in compact PCB layouts. With its robust collector-emitter voltage and continuous collector current capability, the MJD340T4 is well-suited for industrial and consumer-grade circuits.

Features

• NPN BJT designed for high-voltage applications
• Collector-emitter voltage (Vce) up to 300V
• Continuous collector current up to 0.5A
• High power dissipation (up to 1.25W on standard PCB)
• TO-252 (DPAK) surface mount package for thermal efficiency
• Ideal for linear and switching operations
• Compliant with RoHS and halogen-free standards

Applications

• Power switching circuits
• Voltage regulation and linear amplification
• Motor control and actuator drivers
• Relay drivers and solenoid control
• Industrial automation systems
• Consumer electronics requiring compact, surface-mount components

Specification