FFAF60U60DNTU

Diode Arrays Overview

The onsemi FFAF60U60DNTU is a dual ultrafast recovery power rectifier housed in an insulated TO-3PF package. It features a common cathode configuration with two silicon diodes rated for a peak repetitive reverse voltage of 600V and an average forward current of 60A per diode at a case temperature of 100°C. The device exhibits a maximum reverse recovery time of 90ns and supports a non-repetitive peak surge current of 360A. Thermal resistance from junction to case is specified at 0.45°C/W, enabling operation within a junction temperature range of -65°C to +150°C.

Diode Arrays Feature Summary

• Insulated TO-3PF package design providing electrical isolation between the terminals and the heatsink mounting surface.
• Ultrafast recovery characteristics optimized for high-frequency switching applications with minimal reverse recovery charge.
• High avalanche energy capability allowing the component to withstand transient overvoltage conditions.

Diode Arrays Applications

• Switching mode power supplies
• Free-wheeling diodes for motor drive circuits
• General purpose power switching circuits

Diode Arrays Procurement Notes

Verify the specific revision status of the datasheet before integration, as the component originates from Fairchild Semiconductor prior to its acquisition by onsemi. Confirm that the TO-3PF insulation specifications meet the safety requirements of the target enclosure. Ensure thermal interface materials are compatible with the isolated tab structure to maintain the specified thermal resistance values during assembly.

Diode Arrays Selection Notes

Select this component when a high-current, high-voltage rectifier requires electrical isolation from the chassis or heatsink. The TO-3PF form factor is suitable for through-hole mounting where robust mechanical stability is necessary. Evaluate the 60A continuous current rating against the actual thermal management capabilities of the system to ensure the junction temperature remains within the specified operational limits under all load conditions.

Diode Arrays Part Context

This part belongs to the family of ultrafast recovery power rectifiers originally developed by Fairchild Semiconductor. The TO-3PF package variant specifically addresses applications requiring galvanic isolation between the semiconductor die and the external mounting hardware. The 'NTU' suffix typically denotes tape and reel packaging, distinguishing it from rail or tube configurations found in other variants of the same electrical specification.

Diode Arrays Replacement Considerations

Direct substitutes include the FFAF60UA60DN and FFAF60UP60DN. Verify that replacement parts maintain the identical TO-3PF footprint and insulation ratings. Cross-reference datasheets to confirm matching reverse recovery times and forward voltage drops to ensure circuit performance consistency.