FMKS-2052

Diode Arrays Overview

The FMKS-2052 is a fast recovery diode with built-in temperature detection, packaged in TO220F-3L. It integrates a fast recovery diode (FRD) and a Schottky barrier diode (SBD) on the same die for accurate thermal monitoring. Key electrical parameters include a peak repetitive reverse voltage of 200 V, an average forward current of 5 A, a maximum forward voltage drop of 0.98 V at 5 A, and a reverse recovery time of 50 ns. The device operates within a junction temperature range of -40 to 150 °C.

Diode Arrays Feature Summary

• Integrates a fast recovery diode and a Schottky barrier diode for temperature detection on a single die.
• Provides highly accurate real-time thermal monitoring of the FRD using SBD leakage current characteristics.
• Enables component reduction by eliminating external thermistors and simplifying attachment processes.
• Features high-speed switching capabilities and low forward voltage drop for efficient power conversion.

Diode Arrays Applications

• Audio equipment
• White goods
• Power supplies

Diode Arrays Procurement Notes

Verify that the specific part number matches the required electrical ratings, including the 200 V reverse voltage and 5 A forward current. Confirm package compatibility with the TO220F-3L footprint. Check for RoHS compliance and lead-free treatment status as specified in the datasheet. Ensure design accounts for the 'Not Recommended for New Designs' status if applicable to long-term supply planning.

Diode Arrays Selection Notes

Select this component when integrated thermal protection is required without adding discrete thermistors. The internal SBD allows direct connection to shunt regulator reference pins for precise over-temperature limiting. Consider the 50 ns reverse recovery time for high-frequency switching applications. Evaluate derating curves based on expected lead temperatures and ambient conditions to ensure reliable operation within the 150 °C junction limit.

Diode Arrays Part Context

The FMKS series from Sanken Electric combines power rectification with thermal sensing. This integration addresses limitations of external thermistors, such as thermal lag and attachment distance errors. The FMKS-2052 specifically targets applications needing compact designs with robust thermal management, leveraging the monolithic structure for consistent temperature correlation between the power diode and the sensing element.

Diode Arrays Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

Diode Arrays FAQ

How does the FMKS-2052 detect temperature?

It uses the temperature-dependent reverse leakage current of the integrated Schottky barrier diode (SBD), which increases as the junction temperature rises.

What is the purpose of the SBD in the FMKS-2052?

The SBD serves exclusively for temperature detection, allowing the system to monitor the FRD's thermal state accurately without external sensors.

Can the FMKS-2052 replace a standard diode plus thermistor setup?

Yes, it replaces both components by integrating the fast recovery diode and the thermal sensing element on the same die, reducing board space and assembly complexity.