BU1008-M3/51

Bridge Rectifier Overview

The BU1008-M3/51 is a single-phase bridge rectifier from Vishay General Semiconductor, utilizing enhanced isoCink+™ technology. It features a maximum repetitive peak reverse voltage of 800 V and an average rectified forward current of 10 A at a case temperature of 92 °C. The device operates with a maximum instantaneous forward voltage of 1.05 V at 5.0 A and 25 °C. It supports a non-repetitive peak forward surge current of 120 A and has a typical junction capacitance of 43 pF. The component is housed in a thin single-in-line BU package with matte tin plated leads.

Bridge Rectifier Feature Summary

• Glass passivated chip junction for superior reliability
• Thin single in-line package design
• Superior thermal conductivity characteristics
• RoHS-compliant and halogen-free construction

Bridge Rectifier Applications

• AC/DC bridge full wave rectification for switching power supplies
• Home appliances
• White-goods applications

Bridge Rectifier Procurement Notes

Verify the specific ordering suffix /51 to confirm the paper tray packaging format containing 250 units per base quantity. Ensure compliance requirements match the M3 designation for halogen-free and RoHS standards. Confirm that the technical specifications align with the intended thermal management strategy, as free-air derating differs significantly from heatsink-mounted operation.

Bridge Rectifier Selection Notes

Select this component when an 800 V rating is required for general-purpose AC/DC conversion. Consider the BU package dimensions for PCB layout constraints. Evaluate thermal resistance values against the expected ambient temperature and load conditions to ensure the junction temperature remains within the -55 to +150 °C operating range during continuous operation.

Bridge Rectifier Part Context

This part belongs to the BU1006, BU1008, and BU1010 series of enhanced isoCink+™ bridge rectifiers. The series offers varying reverse voltage ratings of 600 V, 800 V, and 1000 V while maintaining a consistent 10 A average forward current capability. The M3 suffix indicates halogen-free compliance, distinguishing it from the standard E3 commercial grade variants.

Bridge Rectifier Replacement Considerations

BU1008A-M3/45

Bridge Rectifier FAQ

What is the maximum allowable soldering temperature?

The maximum solder dip temperature is 275 °C for a duration of up to 10 seconds, tested per JESD 22-B106.

How does the mounting torque affect the device?

The maximum recommended mounting torque is 10 cm-kg (8.8 inches-lbs) to prevent mechanical damage to the package or leads.

Is the device suitable for floating ground applications?

For floating ground applications, Vishay recommends using an insulator to meet safety requirements, despite the device having a UL-approved dielectric strength of 1500 V.