DBI20-16B

Bridge Rectifier Overview

The Diotec Semiconductor DBI20-16B is a three-phase bridge rectifier featuring six diodes in a bridge configuration within an isolated case. It provides a repetitive peak reverse voltage of 2500 V and supports a nominal forward current of 20 A at +50°C ambient temperature, or 25 A on a heatsink at +115°C case temperature. The device operates with a junction temperature range of -50°C to +150°C and offers a peak forward surge current of 200 A at 50 Hz. Thermal resistance from junction to ambient is less than 50 K/W, while junction-to-case thermal resistance is under 4.3 K/W per diode.

Bridge Rectifier Feature Summary

• High-admissible repetitive reverse voltage capability
• Single inline case design for straightforward PCB assembly
• Full isolated case outline ensuring electrical safety
• Operation flexibility as freestanding unit or mounted on a heatsink

Bridge Rectifier Applications

• Industrial power supplies
• Input stage of frequency inverters
• Electric vehicle chargers
• Electric drives and generators

Bridge Rectifier Procurement Notes

Verify the specific datasheet version before ordering, as Diotec reserves the right to update product information without notice. Confirm compliance requirements such as RoHS and REACH status directly with the manufacturer or authorized distributors. Ensure that the mounting torque adheres to the specified M4 screw limits to prevent mechanical damage during installation.

Bridge Rectifier Selection Notes

Select this component when high voltage isolation and robust surge handling are required in three-phase systems. Evaluate thermal management needs carefully; utilize a heatsink if the operating case temperature exceeds +50°C to maintain the 25 A rating. Verify that the system's superimposed voltage peaks do not exceed the 2500 V repetitive peak reverse voltage limit.

Bridge Rectifier Part Context

This part belongs to the DBI20 series of three-phase bridge rectifiers from Diotec Semiconductor. These devices are designed for commercial and industrial applications requiring standard reliability levels. They feature a compact encapsulated design suitable for general-purpose instrumentation and power conversion tasks where high voltage blocking is essential.

Bridge Rectifier Replacement Considerations

PCN128 indicates that the DBI20-xxB series is being replaced by the DBI25-xxA series. Verify if the DBI25-16A serves as a direct functional substitute for the DBI20-16B, considering potential differences in thermal characteristics and package dimensions.