DF005ST-HF

Bridge Rectifier Overview

The DF005ST-HF is a surface-mount glass-passivated bridge rectifier from Comchip Technology, part of the DFS series. It features a maximum average forward rectified current of 1.0 A at 40°C ambient temperature and a peak forward surge current of 30 A for an 8.3 ms half-sine wave. The device supports a maximum repetitive peak reverse voltage of 50 V and a maximum DC blocking voltage of 50 V. Electrical characteristics include a maximum forward voltage drop of 1.1 V at 1.0 A DC and a maximum DC reverse current of 10 µA at 25°C. The component operates within a junction temperature range of -55°C to +150°C and has a typical thermal resistance of 40°C/W.

Bridge Rectifier Feature Summary

• Glass passivation provides protection against mechanical stress and chemical contamination.
• Low forward voltage drop contributes to improved efficiency in power conversion circuits.
• High current capability allows for effective performance in compact printed circuit board applications.

Bridge Rectifier Applications

• Adapters and chargers
• Power supplies
• Battery chargers

Bridge Rectifier Procurement Notes

Verify that the ordering suffix 'ST' corresponds to tube packaging as documented in the manufacturer's marking code table. Confirm RoHS compliance and halogen-free status by checking the specific datasheet revision or certificate of conformity provided with the shipment. Ensure the component matches the DFS package dimensions and polarity markings indicated on the body.

Bridge Rectifier Selection Notes

Select this component when a 1.0 A bridge rectifier with a 50 V reverse voltage rating is required for surface-mount assembly. Consider the thermal resistance and derating curves if operating near the maximum temperature limits. Verify that the PCB layout accommodates the specific DFS footprint dimensions and pad spacing requirements.

Bridge Rectifier Part Context

This component belongs to the SMD Glass Passivated Bridge Rectifiers family produced by Comchip Technology. The series spans ratings from 50 V to 1000 V reverse voltage with a constant 1.0 A forward current capability. The product line includes variants with different packaging options such as tubes and reels, designated by specific suffixes in the part number.

Bridge Rectifier Replacement Considerations

Compatible substitutes include other 1.0 A SMD bridge rectifiers with matching 50 V ratings and compatible DFS package footprints. Verify electrical parameters such as forward voltage drop and reverse leakage current before substitution. Ensure the alternative component meets the same thermal and mechanical reliability standards.

Bridge Rectifier FAQ

What does the 'ST' suffix indicate for the DF005ST-HF?

The 'ST' suffix designates the tube packaging format for this component, distinguishing it from reel-packaged variants.

How is the forward current affected by capacitive loads?

For capacitive loads, the forward current must be derated by 20% from the rated 1.0 A value.

What is the typical junction capacitance per element?

The typical junction capacitance is 3.7 pF, measured at 1.0 MHz and an applied reverse voltage of 4.0 V DC.