DFB2540

Bridge Rectifier Overview

The DFB2540 is a glass-passivated bridge rectifier from onsemi, rated for a maximum repetitive peak reverse voltage of 400 V and an average forward rectified current of 25 A. It features a peak forward surge current rating of 350 A and operates within a junction temperature range of -55 to +150 °C. The device exhibits a maximum forward voltage of 1.0 V at 12.5 A and 1.1 V at 25 A. Packaged in the TS-6P (CASE 127EP) format, it provides isolated voltage from case to lead exceeding 2500 V and complies with UL flammability classification 94V-0.

Bridge Rectifier Feature Summary

• Glass-passivated junction construction ensures reliable low-cost performance
• High case dielectric strength with isolated voltage exceeding 2500 VRMS
• Suitable for printed circuit board mounting with screw torque specification

Bridge Rectifier Applications

• General-purpose AC to DC power conversion circuits
• Industrial equipment requiring robust bridge rectification
• Consumer electronics utilizing PCB-mounted power supplies

Bridge Rectifier Procurement Notes

Verify component authenticity through authorized onsemi channels or certified distributors. Confirm package integrity and marking alignment with CASE 127EP specifications. Validate RoHS compliance status prior to integration. Ensure storage conditions remain within specified temperature limits to maintain material properties and prevent degradation before assembly.

Bridge Rectifier Selection Notes

Select this component when a 400 V reverse voltage rating and 25 A continuous current capacity are required. Evaluate thermal resistance characteristics against system heat sink capabilities. Consider the 350 A surge rating for inrush current handling. Verify that the TS-6P footprint matches the target PCB layout constraints.

Bridge Rectifier Part Context

This device belongs to the DFB series of glass-passivated bridge rectifiers manufactured by onsemi. The series includes variants with different voltage ratings such as DFB2505, DFB2510, and DFB2520. All share common physical dimensions and electrical characteristics regarding current handling and thermal management.

Bridge Rectifier Replacement Considerations

Cross-reference with other 25 A, 400 V bridge rectifiers in the TS-6P package. Verify pinout compatibility and thermal resistance values. Ensure replacement parts meet equivalent UL certification and RoHS standards.