VUO82-08NO7

Overview

The VUO82-08NO7 is a three-phase rectifier bridge manufactured by IXYS, utilizing planar passivated chip technology. It features screw terminals for panel mounting and provides an isolation voltage of 3000 Vrms. The device supports a maximum repetitive peak reverse voltage (VRRM) of 800 V and a non-repetitive peak surge current (IFSM) of 820 A at 60 Hz. Average forward current ratings are 88 A at a case temperature of 110°C and 57 A at an ambient temperature of 45°C with zero thermal resistance to the heatsink. The component operates within a junction temperature range of -40°C to +150°C.

Feature Summary

• Planar passivated chips ensure robust blocking voltage capabilities up to 1800 V across the series.
• Low forward voltage drop design contributes to improved temperature and power cycling performance.
• Integrated isolation voltage of 3000 Vrms enhances safety in high-voltage applications.

Applications

• Input rectifiers for PWM inverters
• Supplies for DC power equipment
• Battery DC power supplies
• Field supply for DC motors

Procurement Notes

Verify the specific voltage rating suffix against the datasheet table, as the VUO82 series includes variants from 600 V to 1800 V. Confirm that the ordering code matches the 800 V specification required for the application. Ensure compliance with the specified mounting torque of 5 Nm for M5 screws to maintain proper thermal contact and mechanical stability during operation.

Selection Notes

Select this component when a three-phase rectification solution requires high surge current handling and reliable isolation. Compare the thermal resistance values (RthJC) against the system's cooling capacity to ensure the junction temperature remains within limits. Consider the physical dimensions and weight for space-constrained industrial enclosures where screw mounting is preferred over PCB traces.

Part Context

This part belongs to the VUO82 family of three-phase rectifier bridges, which are designed for general industrial power conversion. The series offers various voltage ratings while maintaining consistent package styles and mounting characteristics. It serves as a standard component for converting AC input to DC output in medium-power applications requiring rugged semiconductor performance.

Replacement Considerations

Direct substitutes include other VUO82 series models with matching or higher voltage ratings, such as VUO82-12NO7 or VUO82-16NO7, provided the electrical parameters exceed the original requirements. Verify that alternative packages maintain the same PWS-D form factor and terminal layout for seamless integration without modifying the host board or chassis.

FAQ

What is the maximum allowable acceleration for the VUO82-08NO7?

The maximum allowable acceleration is 50 m/s².

How does the average forward current rating change between case and ambient temperature conditions?

The rating is 88 A at a case temperature of 110°C and decreases to 57 A at an ambient temperature of 45°C with a thermal resistance to the heatsink of 0.6 K/W.

What is the isolation test voltage for this component?

The isolation voltage is 3000 Vrms at 1 mA for 1 second, or 2500 Vrms at 50/60 Hz for 1 minute.