ON Semiconductor MJE3439 Silicon NPN Transistor

The MJE3439 from ON Semiconductor is a high-performance silicon NPN transistor designed to deliver reliable and efficient performance for a wide range of applications. This versatile component is well-suited for use in power linear and switching applications, making it a popular choice among engineers and electronics designers.

Featuring a collector-emitter voltage (VCEO) of 350V and collector current capability of up to 500mA, the MJE3439 is capable of handling moderate power levels while maintaining a low saturation voltage. This combination ensures efficient operation and helps to reduce power losses in circuits where the transistor is deployed.

The device is housed in a TO-225 package, which provides a good balance between thermal performance and compactness. This package allows for effective heat dissipation, ensuring the transistor operates within its specified temperature range even under high power conditions.

Key specifications of the MJE3439 include:

• Collector-Emitter Voltage (VCEO): 350V
• Collector Current (IC): 500mA
• Power Dissipation (PD): 20W
• DC Current Gain (hFE): 30 - 240 at IC = 150mA
• Operating and Storage Junction Temperature Range: -55°C to +150°C

With its high voltage capability and robust performance, the MJE3439 is an excellent choice for applications such as power regulators, converters, inverters, and amplifiers. Its high current gain bandwidth product makes it suitable for audio frequency applications where clear sound reproduction is required.

ON Semiconductor ensures that the MJE3439 meets stringent quality and reliability standards. Each transistor is subjected to rigorous testing and quality control procedures, providing designers with confidence in its performance and longevity. Whether you're working on a DIY project or developing a commercial product, the MJE3439 from ON Semiconductor is a reliable and cost-effective solution for your power transistor needs.