BU1210-E3/51

Bridge Rectifier Overview

The BU1210-E3/51 is a single-phase bridge rectifier from Vishay General Semiconductor, utilizing Enhanced isoCink+ technology. It features a maximum repetitive peak reverse voltage of 1000 V and an average rectified forward current of 12 A at a case temperature of 85 °C. The device operates with a non-repetitive peak forward surge current of 150 A and maintains a junction temperature range from -55 °C to +150 °C. Electrical characteristics include a maximum instantaneous forward voltage of 1.05 V at 6.0 A and 25 °C, alongside a maximum reverse current of 5.0 μA at rated voltage. Thermal resistance values are specified as 2.7 °C/W (junction-to-case) and 20 °C/W (junction-to-ambient).

Bridge Rectifier Feature Summary

• Glass passivated chip junctions provide superior thermal conductivity for efficient heat dissipation.
• Thin single in-line package design facilitates compact mounting on printed circuit boards.
• Terminals feature matte tin plating, ensuring solderability compliant with J-STD-002 standards.

Bridge Rectifier Applications

• General purpose AC/DC bridge full wave rectification
• Switching power supply circuits
• Home appliances and white-goods applications

Bridge Rectifier Procurement Notes

Verify the specific ordering suffix /51 against official documentation to confirm the paper tray packaging format and base quantity of 250 units. Ensure compliance requirements match the E3 designation for RoHS compliance and commercial grade material categorization. Cross-reference the document number 84802 for the most current revision status before finalizing procurement specifications.

Bridge Rectifier Selection Notes

Select this component when a 1000 V rating is required for full-wave rectification in space-constrained designs. The BU case style offers a thin profile suitable for low-height assemblies. Evaluate thermal management needs based on the 20 °C/W junction-to-ambient resistance if operating without a heatsink at ambient temperatures up to 25 °C.

Bridge Rectifier Part Context

This part belongs to the BU1206, BU1208, and BU1210 series of Enhanced isoCink+ bridge rectifiers. All variants share identical mechanical dimensions and thermal characteristics within the BU case style. The primary distinction across the series lies in the maximum repetitive peak reverse voltage ratings, which vary between 600 V, 800 V, and 1000 V respectively.

Bridge Rectifier Replacement Considerations

Direct substitutes within the same family include BU1206-E3/51 and BU1208-E3/51, provided the lower voltage ratings meet the circuit requirements. Verify that any replacement maintains the 12 A current capacity and compatible BU package footprint for seamless integration.

Bridge Rectifier FAQ

What is the dielectric strength of the BU1210-E3/51?

The device is UL approved with a safety use dielectric strength of 1500 V.

How does the average forward current change with case temperature?

The average rectified forward current is rated at 12 A at a case temperature of 85 °C, but derates to 3.4 A at an ambient temperature of 25 °C without a heatsink.

Is the device suitable for floating ground applications?

For floating ground applications, Vishay recommends using an insulator to meet safety requirements.