onsemi

MR751

MR751 Description

The MR751 from onsemi is a general-purpose diode designed for high-efficiency rectification in demanding electronic circuits. With a 100V maximum reverse voltage (Vr) and an average rectified current (Io) of 6A, it delivers robust performance in power conversion and protection applications. Packaged in a Microde Button form factor with through-hole mounting, this diode is optimized for space-constrained designs requiring reliable current handling. Its standard recovery time (>500ns) and low forward voltage drop (900mV @ 6A) ensure minimal power loss, making it suitable for energy-sensitive systems.

MR751 Features

• High Current Capacity: Supports 6A average rectified current (Io) for power-intensive applications.
• Low Leakage: 25 µA @ 100V reverse leakage ensures efficiency in blocking unwanted current flow.
• Durable Construction: Button, Axial package with through-hole mounting for mechanical stability.
• Wide Voltage Range: 100V DC reverse voltage (Vr) for versatile circuit protection.
• Low Forward Drop: 900mV @ 6A minimizes heat dissipation and power loss.
• Standard Recovery: >500ns recovery time balances speed and efficiency for general-purpose use.
• REACH Unaffected: Compliant with environmental regulations, ensuring long-term availability.

MR751 Applications

• Power Supplies: Ideal for rectification in AC-DC converters and DC-DC modules.
• Motor Drives: Provides reverse voltage protection in brushed and brushless motor circuits.
• Industrial Equipment: Used in relays, solenoids, and high-current switching systems.
• Automotive Electronics: Suitable for alternator rectification and load-dump protection.
• Renewable Energy: Efficiently manages current flow in solar panel bypass diodes.

Conclusion of MR751

The MR751 stands out as a reliable, high-performance diode for general-purpose rectification, combining 6A current handling, low leakage, and durable packaging. Its Microde Button design and through-hole mounting make it a practical choice for industrial, automotive, and power supply applications where space and efficiency are critical. While marked as obsolete, its proven performance ensures continued relevance in legacy and maintenance designs. For engineers seeking a balance of cost, reliability, and performance, the MR751 remains a compelling option.