onsemi

MJE5731AG

MJE5731AG Description

The MJE5731AG from onsemi is a high-voltage PNP bipolar junction transistor (BJT) designed for robust power-switching and amplification applications. Encased in a TO-220 package, it offers a 375V collector-emitter breakdown voltage (V_CEO) and a 1A continuous collector current (I_C), making it suitable for medium-power circuits. With a transition frequency (f_T) of 10MHz, it balances speed and power efficiency, while its 40W maximum power dissipation ensures reliability under demanding conditions. The transistor is RoHS3 compliant and REACH unaffected, meeting modern environmental standards.

MJE5731AG Features

• High Voltage Tolerance: 375V V_CEO for use in high-voltage power supplies and inverters.
• Low Saturation Voltage: 1V max at 200mA base current (I_B) and 1A collector current (I_C), reducing power losses.
• High DC Current Gain (h_FE): Minimum 30 at 300mA I_C and 10V V_CE, ensuring efficient signal amplification.
• Robust Thermal Performance: TO-220 package enables effective heat dissipation for sustained 40W operation.
• Reliable Cutoff Characteristics: Leakage current (I_CEO) as low as 1mA enhances energy efficiency in standby modes.

MJE5731AG Applications

• Power Supply Circuits: Ideal for switch-mode power supplies (SMPS) and voltage regulators due to high V_CEO and low saturation losses.
• Motor Control: Used in PNP-driven H-bridge configurations for DC motor speed control.
• Audio Amplifiers: Suitable for high-voltage audio output stages in Class AB amplifiers.
• Industrial Systems: Deployed in relay drivers, solenoid controllers, and inductive load switches where high voltage and current handling are critical.

Conclusion of MJE5731AG

The MJE5731AG stands out as a high-voltage PNP transistor with a balanced combination of power handling, efficiency, and reliability. Its low saturation voltage and high current gain make it superior to generic PNP transistors in energy-sensitive applications. Whether in power conversion, motor control, or industrial automation, this transistor delivers consistent performance under high-stress conditions. Its through-hole TO-220 package ensures easy integration into prototyping and production environments, while onsemi’s quality assurance guarantees long-term durability.