FMX-4206S

Diode Arrays Overview

The FMX-4206S is a fast recovery diode manufactured by Sanken Electric, designed for high-current applications. It features a TO-3PF package with a maximum repetitive peak reverse voltage (VRM) of 600 V and an average forward current (IF(AV)) rating of 20 A. The device exhibits a maximum forward voltage drop (VF) of 1.5 V at 10 A and a typical reverse recovery time (trr) of 30 ns at 25°C. It supports a peak surge forward current of 100 A and operates within a junction temperature range of -40°C to +150°C.

Diode Arrays Feature Summary

• Ultrafast recovery characteristics with balanced low forward voltage and high-speed performance at elevated temperatures.
• High thermal dissipation capability provided by the high-current TO-3PF package.
• Enhanced isolation performance achieved through a full mold encapsulation design.

Diode Arrays Applications

• DCM or CCM type PFC circuits
• Forward type DC-DC converters
• Flyback type DC-DC converters
• Current resonance type DC-DC converters

Diode Arrays Procurement Notes

Verify the component against the official Sanken Electric datasheet revision dated January 2010. Confirm that the marking on the device reads X4206S followed by lot number digits. Ensure the package matches the TO-3PF specification and check for any specific ordering suffixes if required by your supply chain documentation.

Diode Arrays Selection Notes

Select this component when designing circuits requiring a balance between low conduction loss and fast switching speeds. The TO-3PF package is suitable for applications needing robust heat dissipation. Consider the 600 V rating and 20 A continuous current capacity to ensure adequate headroom for your specific power conversion topology.

Diode Arrays Part Context

This part belongs to Sanken Electric's Fast Recovery Diode series, which includes variants like FMLB-4204S and CTXS-5306S. These components are engineered for power factor improvement and DC-DC conversion stages where efficiency and thermal management are critical design constraints.

Diode Arrays Replacement Considerations

Public confirmed substitute part numbers: None available in verified sources.

Diode Arrays FAQ

What is the maximum operating junction temperature?

The maximum operating junction temperature is +150°C.

How does the reverse recovery time vary with temperature?

The typical reverse recovery time increases from 30 ns at 25°C to 102 ns at 150°C.

What is the peak surge forward current rating?

The peak surge forward current is rated at 100 A for a half-sine wave pulse of 10 msec duration.