FFL25U120DNTU

Diode Arrays Overview

The onsemi FFL25U120DNTU is a dual common cathode ultrafast recovery power rectifier housed in a TO-264 package. It supports an average forward current of 25 A at a case temperature of 100°C and withstands a peak repetitive reverse voltage of 1200 V. The device features a maximum instantaneous forward voltage of 3.5 V at 25 A and 25°C, with a non-repetitive peak surge current rating of 150 A. Key electrical parameters include a maximum reverse recovery time of 120 ns, a maximum reverse current of 25 µA at 25°C, and a junction-to-case thermal resistance of 0.72 °C/W.

Diode Arrays Feature Summary

• High speed switching capability for efficient power conversion
• Low forward voltage drop to minimize conduction losses
• High voltage and high reliability construction

Diode Arrays Applications

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

Diode Arrays Procurement Notes

Verify the component status as discontinued by Fairchild Semiconductor before procurement planning. Confirm that the onsemi suffix 'TU' corresponds to the tube packaging format specified in the original datasheet. Ensure compatibility with existing TO-264 footprints and validate thermal management requirements against the 0.72 °C/W junction-to-case resistance specification.

Diode Arrays Selection Notes

Select this component for designs requiring 1200 V blocking capability and 25 A continuous current handling. Evaluate the 120 ns reverse recovery time against circuit switching frequencies to ensure adequate performance. Consider the TO-264 through-hole mounting style for mechanical stability and verify that the operating temperature range of -65°C to +150°C meets environmental constraints.

Diode Arrays Part Context

This part belongs to the FFL series of ultrafast recovery power rectifiers originally manufactured by Fairchild Semiconductor. The series includes variants with different current ratings such as the FFAF20U120DNTU. The technology utilizes silicon planar die construction optimized for high-speed switching applications in industrial and consumer power electronics.

Diode Arrays Replacement Considerations

FFL20U120DNTU

Diode Arrays FAQ

What is the maximum avalanche energy rating?

The maximum avalanche energy (AVL) rating is 1.0 mJ.

How does the forward voltage change with temperature?

The maximum instantaneous forward voltage decreases from 3.5 V at 25°C to 3.2 V at 100°C when conducting 25 A.

What is the typical junction capacitance?

The typical junction capacitance is 455 pF at 0 V reverse bias.