FFA20U20DNTU

Diode Arrays Overview

The FFA20U20DNTU is a dual common cathode ultrafast recovery rectifier manufactured by onsemi, formerly Fairchild Semiconductor. It features a 20 A average forward current rating and a 2000 V repetitive peak reverse voltage. The device utilizes a TO-3PF package for through-hole mounting. Key electrical characteristics include a maximum forward voltage of 4.5 V at rated current, a reverse leakage current of 10 uA, and a typical reverse recovery time of 75 ns. It supports a surge current of 160 A and operates within a junction temperature range of -65°C to +150°C.

Diode Arrays Feature Summary

• Ultrafast recovery characteristics enable efficient high-frequency switching with minimal reverse recovery charge.
• Dual common cathode configuration simplifies circuit design for bridge or center-tapped applications.
• Robust thermal performance in a TO-3PF package suitable for high-power industrial environments.

Diode Arrays Applications

• High-voltage DC power supplies
• Industrial motor drives
• Uninterruptible power systems (UPS)

Diode Arrays Procurement Notes

Verify the manufacturer origin carefully, as onsemi acquired Fairchild Semiconductor's discrete and sensor product lines. Confirm that the specific suffix DNTU corresponds to the intended tube packaging and lead finish. Check for active status or obsolescence notices, as legacy Fairchild part numbers may have been superseded by updated onsemi equivalents. Ensure component authenticity through authorized distribution channels to avoid counterfeit risks associated with discontinued semiconductor devices.

Diode Arrays Selection Notes

Select this component when designing circuits requiring high voltage blocking capability above 1500 V combined with moderate current handling around 20 A. The ultrafast recovery profile makes it suitable for hard-switching topologies where minimizing switching losses is critical. Compare the 75 ns recovery time against slower standard recovery diodes if efficiency is a priority. Ensure the TO-3PF mechanical footprint fits the target PCB layout and heatsinking requirements.

Diode Arrays Part Context

This device belongs to the FFA series of ultrafast recovery rectifiers from onsemi's portfolio. The series is designed for demanding power conversion applications. The FFA20U20DNTU specifically addresses the need for high-voltage isolation in industrial power electronics. It represents the continuation of Fairchild's legacy high-performance rectifier technology under onsemi manufacturing standards.

Diode Arrays Replacement Considerations

Consult onsemi datasheets for direct pin-compatible replacements such as the FFA20U20DNTU successor variants or other FFA series parts with matching voltage and current ratings. Verify that any substitute maintains the same TO-3PF package and electrical specifications for seamless integration.