AU01WK

Overview

The AU01WK is a fast recovery diode manufactured by Sanken Electric USA Inc., designed for high-speed switching applications. It features a maximum repetitive reverse voltage of 200 V and an average forward rectified current rating of 0.5 A. The device exhibits a typical forward voltage drop of 1.7 V at the rated current. Its key performance metric is a maximum reverse recovery time (t_rr) of 400 ns, achieved through optimized lifetime control technology. The component is housed in an axial package with bare leads, compliant with RoHS standards.

Feature Summary

• Optimized lifetime control technology ensures a fast reverse recovery time of 400 ns maximum.
• Designed for efficient secondary side rectification in flyback and LLC converters.
• Suitable for use as a freewheeling diode in offline buck and buck-boost topologies.

Applications

• Secondary side rectifier diodes in flyback converters
• Secondary side rectifier diodes in LLC converters
• Freewheel diodes in offline buck converters
• Freewheel diodes in offline buck-boost converters

Procurement Notes

Verify the specific suffix 'WK' against official Sanken Electric datasheets to confirm exact mechanical dimensions and marking codes, as suffixes often denote packaging or lead finish variations. Ensure the procurement source provides the original manufacturer's specification document rather than generic distributor summaries to validate the 400 ns t_rr parameter and axial package type.

Selection Notes

Select this component when a 200 V / 0.5 A fast recovery diode is required for low-power isolated power supplies. The 400 ns reverse recovery time makes it suitable for higher frequency switching compared to standard recovery diodes. Verify that the axial package fits the target PCB layout and that the thermal dissipation requirements for 0.5 A average current are met within the operating temperature range.

Part Context

The AU01WK belongs to Sanken Electric's discrete semiconductor line, specifically categorized under fast recovery diodes. This series utilizes lifetime control optimization to balance switching speed and forward voltage characteristics. It serves as a specialized solution for modern power conversion circuits where reduced switching losses and improved efficiency are critical design constraints.

Replacement Considerations

Publicly confirmed substitute part numbers for AU01WK were not found in the provided documentation. Verify compatibility with other 200V/0.5A fast recovery diodes only if their t_rr and package specifications match the original design requirements.