B4M-E3/45

Bridge Rectifier Overview

The B4M-E3/45 is a single-phase standard bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features an average forward current of 500 mA and a maximum repetitive peak reverse voltage of 400 V. The device utilizes through-hole mounting in a 4-DIP (MBM) package with a pin spacing of 5.08 mm. Forward voltage is specified at 1 V when conducting 500 mA, while reverse leakage current remains at 5 µA under 400 V conditions. The component operates within a junction temperature range of -55°C to 150°C and complies with RoHS3 standards.

Bridge Rectifier Feature Summary

• Single-phase bridge rectification configuration for AC-to-DC conversion
• Through-hole MBM package design suitable for standard PCB mounting
• Standard recovery technology optimized for general-purpose applications

Bridge Rectifier Applications

• General-purpose power supply circuits
• Low-current DC power adapters
• Consumer electronics internal power stages

Bridge Rectifier Procurement Notes

This component has been officially discontinued and is no longer in production. Verification of end-of-life notices confirms that original manufacturing has ceased. Engineers should validate replacement availability before finalizing designs. Sourcing new units from primary channels is not possible; only surplus or substitute parts are currently accessible.

Bridge Rectifier Selection Notes

Designers requiring this specification must evaluate alternative components due to the part's obsolete status. The recommended manufacturer substitute is the B4S-E3/80, which offers similar electrical characteristics but differs in voltage rating. Ensure that any selected replacement matches the required thermal performance and physical footprint constraints for the target application.

Bridge Rectifier Part Context

The B4M belongs to Vishay's MBM series of small-signal bridge rectifiers. This series provides compact solutions for low-power rectification tasks. The E3 suffix indicates compliance with specific environmental regulations regarding halogen content. The product falls under the broader category of discrete semiconductor diodes and rectifiers.

Bridge Rectifier Replacement Considerations

The manufacturer recommends the B4S-E3/80 as a direct functional substitute. This alternative maintains comparable current ratings and package dimensions while offering an increased voltage capability. Verify pinout compatibility and thermal dissipation requirements when transitioning to the replacement part.