FML-24S

Diode Arrays Overview

The FML-24S is a fast recovery diode manufactured by Sanken Electric. It features a repetitive peak reverse voltage (VRM) of 400 V and an average forward current (IF(AV)) rating of 10 A. The device achieves a maximum reverse recovery time (trr) of 50 ns through optimized lifetime control. Electrical characteristics include a forward voltage drop (VF) of 1.3 V at 5 A and a nonrepetitive peak reverse voltage (VRSM) of 400 V. Surge forward current capability is rated at 70 A for a half-cycle sine wave. Thermal resistance from junction to case (Rth(J-C)) is 4.0 °C/W.

Diode Arrays Feature Summary

• Optimized lifetime control enables a maximum reverse recovery time of 50 ns.
• Bare lead frame construction is Pb-free and RoHS compliant.
• Flammability rating is equivalent to UL94V-0.

Diode Arrays Applications

• Secondary side rectifier diode in flyback converters
• Secondary side rectifier diode in LLC converters
• Freewheel diode in offline buck converters
• Freewheel diode in buck-boost converters

Diode Arrays Procurement Notes

Verify the specific datasheet revision, currently Rev.1.2 dated Dec. 23, 2024, against the manufacturer's official records before procurement. Confirm that the bare lead frame meets required environmental compliance standards such as RoHS. Ensure thermal management designs account for the specified Rth(J-C) of 4.0 °C/W and derating curves provided in the documentation.

Diode Arrays Selection Notes

Select this component for applications requiring a 400 V blocking voltage and 10 A continuous current handling. The 50 ns reverse recovery time makes it suitable for high-frequency switching topologies like flyback and LLC converters. Verify that the TO220F-3L package dimensions and mounting torque requirements align with the mechanical design constraints of the target system.

Diode Arrays Part Context

The FML-24S is classified as a fast recovery diode within the Sanken Electric product portfolio. It utilizes a silicon planar epitaxial structure housed in a TO220F-3L package. The datasheet explicitly marks this part as 'Not Recommended for New Designs,' indicating potential obsolescence or replacement availability.

Diode Arrays Replacement Considerations

The datasheet does not list specific substitute part numbers. Due to the 'Not Recommended for New Designs' status, consult Sanken Electric sales representatives for current alternative components or updated series replacements.

Diode Arrays FAQ

What is the maximum reverse recovery time for the FML-24S?

The maximum reverse recovery time (trr) is 50 ns, achieved through optimized lifetime control.

Is the FML-24S recommended for new designs?

No, the datasheet explicitly states that the FML-24S is not recommended for new designs.

What is the thermal resistance between the junction and the case?

The thermal resistance Rth(J-C) is 4.0 °C/W.