DBI20-12B

Bridge Rectifier Overview

The Diotec Semiconductor DBI20-12B is a three-phase bridge rectifier with an average forward current rating of 20 A and a peak reverse voltage of 1200 V. It features a maximum forward voltage of 1.5 V at 20 A and a low reverse leakage current of 5 µA at 1200 V. The device supports a peak forward surge current of 200 A for half-sine waves at 50 Hz. Thermal resistance from junction to case is less than 4.3 K/W, while junction-to-ambient resistance is under 50 K/W. Operating temperatures range from -50°C to +150°C.

Bridge Rectifier Feature Summary

• Three-phase bridge configuration for AC to DC conversion
• High thermal stability with extended operating temperature range
• Robust surge current handling capability

Bridge Rectifier Applications

• Industrial power supplies
• Motor drive systems
• Battery charging circuits

Bridge Rectifier Procurement Notes

Verify the specific datasheet version before ordering, as manufacturers may update specifications without notice. Confirm compliance with RoHS and ELV directives if required by your supply chain standards. Ensure that mounting torque adheres to the specified M4 screw requirements to maintain proper thermal contact and mechanical integrity during operation.

Bridge Rectifier Selection Notes

Select this component when a high-voltage three-phase rectification solution is needed. The 1200 V rating suits applications with higher line voltages or transient spikes. Consider the thermal resistance values for heatsink design to ensure the junction temperature remains within safe limits under continuous load conditions.

Bridge Rectifier Part Context

This part belongs to the DBI20 series of three-phase bridge rectifiers from Diotec Semiconductor. The series offers various voltage ratings to accommodate different circuit requirements while maintaining a consistent 20 A current capacity and standardized mounting footprint for easy integration into existing designs.

Bridge Rectifier Replacement Considerations

PCN128 indicates that the DBI20-xxB series is being replaced by the DBI25-xxA series. Verify electrical compatibility and pinout alignment before substituting.