BU25H08-E3/P

Bridge Rectifier Overview

The BU25H08-E3/P is a single-phase bridge rectifier from Vishay General Semiconductor, utilizing enhanced isoCink+ technology. It features a BU case style with an average forward current of 25 A and a maximum repetitive peak reverse voltage of 800 V. The device supports a non-repetitive peak forward surge current of 300 A and operates within a junction temperature range of -55 °C to +175 °C. Electrical characteristics include a typical forward voltage of 0.97 V at 12.5 A and a maximum reverse current of 5 μA at 25 °C. Thermal resistance values are 2.5 °C/W (junction-to-case) and 24 °C/W (junction-to-ambient).

Bridge Rectifier Feature Summary

• Glass passivated chip junction for improved reliability.
• Thin single in-line package design optimized for thermal conductivity.
• Terminals feature matte tin plating compliant with J-STD-002 solderability standards.

Bridge Rectifier Applications

• AC/DC bridge full wave rectification for switching power supplies.
• Rectification circuits in home appliances.
• White-goods applications requiring general-purpose diode performance.

Bridge Rectifier Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging format. The /P suffix indicates tube delivery, while other suffixes may denote tray or reel configurations. Confirm RoHS compliance status and material categorization definitions via the manufacturer's compliance portal before finalizing procurement specifications.

Bridge Rectifier Selection Notes

Select this component based on the required 800 V reverse voltage rating and 25 A continuous current capacity. Ensure adequate heatsinking is provided if operating near the 25 A limit at elevated case temperatures, as derating curves indicate reduced current capability without thermal management. Verify lead spacing matches the PCB footprint requirements for the BU case style.

Bridge Rectifier Part Context

This part belongs to the BU25H06/BU25H08 series of enhanced isoCink+ bridge rectifiers manufactured by Vishay General Semiconductor. The series shares identical mechanical dimensions and electrical performance profiles except for the reverse voltage rating, which distinguishes the 600 V BU25H06 variant from the 800 V BU25H08 variant.

Bridge Rectifier Replacement Considerations

Direct functional substitutes within the same series include the BU25H06-E3/P, which offers identical current and thermal ratings but with a lower 600 V reverse voltage rating. Ensure the application voltage does not exceed 600 V when considering this alternative.

Bridge Rectifier FAQ

What is the maximum operating junction temperature for the BU25H08?

The maximum operating junction temperature is +175 °C.

How is polarity indicated on the BU25H08-E3/P package?

Polarity is marked on the body of the case, with the positive lead identified by a beveled corner.

What is the typical thermal resistance from junction to ambient?

The typical thermal resistance from junction to ambient (RθJA) is 24 °C/W under free air conditions without a heatsink.