FFAF20U20DNTU

Diode Arrays Overview

The FFAF20U20DNTU is a dual common cathode ultra-fast recovery rectifier manufactured by Fairchild Semiconductor. It features a TO-247AC package and is designed for high-efficiency power conversion applications. The device provides a repetitive peak reverse voltage of 200V and an average forward current rating of 20A per element. Key electrical characteristics include a maximum forward voltage drop of 1.35V at rated conditions and a typical reverse recovery time of 35ns, ensuring minimal switching losses in high-frequency circuits.

Diode Arrays Feature Summary

• Ultra-fast recovery characteristics minimize reverse recovery charge and switching losses
• Dual common cathode configuration simplifies circuit design for bridge or freewheeling applications
• Robust thermal performance enabled by the TO-247AC heatsink-mountable package

Diode Arrays Applications

• High-frequency DC-DC converters
• Uninterruptible Power Supplies (UPS)
• Power Factor Correction (PFC) circuits

Diode Arrays Procurement Notes

Verify the manufacturer marking and date code on the component body to confirm authenticity as a Fairchild product. Ensure the TO-247AC package dimensions match your PCB footprint requirements. Check for any specific suffix variations that may indicate lead-free compliance or tape-and-reel packaging options available from authorized distributors.

Diode Arrays Selection Notes

Select this component when low reverse recovery charge is critical for efficiency in hard-switched topologies. The 20A rating suits moderate to high-power designs requiring reliable operation under thermal stress. Compare the 35ns recovery time against slower standard recovery diodes to evaluate potential improvements in electromagnetic interference and switching loss reduction.

Diode Arrays Part Context

This device belongs to the family of ultra-fast recovery rectifiers designed for modern power electronics. It replaces older standard recovery diodes in applications where speed and efficiency are paramount. The dual common cathode arrangement allows for compact implementation in synchronous rectification or full-wave rectifier configurations within industrial and consumer power supplies.

Diode Arrays Replacement Considerations

Cross-reference with equivalent dual common cathode ultra-fast diodes from other manufacturers such as Vishay or STMicroelectronics. Verify that substitute parts meet or exceed the 200V reverse voltage and 20A current ratings while maintaining comparable reverse recovery times.