FFAF20U120DNTU

Diode Arrays Overview

The FFAF20U120DNTU is a dual common cathode ultrafast recovery power rectifier manufactured by onsemi, formerly Fairchild Semiconductor. It features a 1200 V reverse voltage rating and a continuous forward current of 20 A. The device utilizes a TO-3PF through-hole package with a maximum surge current capacity of 120 A. Key electrical parameters include a forward voltage of 3.5 V, a reverse leakage current of 20 uA, and a typical recovery time of 120 ns. It operates within a temperature range of -65°C to +150°C.

Diode Arrays Feature Summary

• Ultrafast recovery characteristics for high-frequency switching applications
• Dual common cathode configuration for bridge or center-tap circuits
• High thermal stability with extended operating temperature range

Diode Arrays Applications

• High-frequency DC-DC converters
• Uninterruptible power supply (UPS) systems
• Power factor correction circuits

Diode Arrays Procurement Notes

Verify the manufacturer designation carefully, as this component was originally produced by Fairchild Semiconductor before its acquisition by onsemi. Datasheets may carry either brand name. Confirm the specific suffix 'TU' indicates tube packaging if required for assembly processes. Check for obsolescence notices or lifecycle status updates from authorized distributors.

Diode Arrays Selection Notes

Select this component when a 1200 V blocking capability and 20 A continuous current are required in a TO-3PF package. Ensure the circuit design accommodates the 120 ns reverse recovery time. Verify that the thermal management system supports the junction temperature limits specified in the official datasheet for reliable long-term operation under load.

Diode Arrays Part Context

This part belongs to the FFAF series of ultrafast recovery rectifiers. The series includes variants with different current ratings, such as the FFAF10U120DN. These components are designed for hard-switching applications where low reverse recovery charge is critical. The TO-3PF package provides robust mechanical mounting and efficient heat dissipation compared to smaller surface-mount alternatives.