70MT80KB

Bridge Rectifier Overview

The 70MT80KB is a silicon rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. It belongs to the 70MT series, designed for high-voltage applications with a maximum repetitive peak reverse voltage of 800 V and an average forward rectified current rating of 70 A per leg. The device utilizes a common cathode configuration within a dual package. Key electrical characteristics include a maximum RMS blocking voltage of 560 V and a non-repetitive peak forward surge current capability of 1200 A. The component operates across a junction temperature range of -65°C to +175°C and is housed in a TO-247AC package.

Bridge Rectifier Feature Summary

• High current handling capability suitable for power conversion circuits
• Common cathode configuration simplifies bridge rectifier designs
• Robust surge current withstand capacity for transient protection

Bridge Rectifier Applications

• Industrial motor drives and inverters
• High-power DC power supplies
• Welding equipment rectification

Bridge Rectifier Procurement Notes

Verify the specific suffix codes against official Vishay documentation to confirm exact mechanical dimensions and terminal plating specifications. Ensure that the procurement channel provides original manufacturer traceability certificates. Cross-reference the datasheet revision date to confirm compliance with current RoHS directives and material declarations before finalizing orders.

Bridge Rectifier Selection Notes

Select this component when designing circuits requiring high average current ratings above 50 A and reverse voltages up to 800 V. Consider the thermal resistance characteristics of the TO-247AC package for heatsinking requirements. Evaluate the forward voltage drop at full load to determine system efficiency losses compared to lower voltage or Schottky alternatives.

Bridge Rectifier Part Context

This part is part of Vishay's 70MT series of high-current rectifiers. The series offers various voltage ratings from 50 V to 1600 V while maintaining consistent current handling and package form factors. It serves as a standard solution for replacing older legacy rectifier types in industrial power electronics where reliability under high stress is critical.

Bridge Rectifier Replacement Considerations

Direct replacements must match the 70 A current rating, 800 V reverse voltage, and TO-247AC package outline. Verify pinout compatibility for common cathode configurations. Alternative manufacturers may offer equivalent parts in the same series family, but thermal performance data should be compared carefully.