MS355R025

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm MS355R025 is a radial lead inrush current limiter designed for PCB mounting. It features a nominal resistance of 5 Ohms and a maximum steady-state current rating of 25 A at 25°C. The component supports voltage ratings of 120 VAC, 240 VAC, 480 VAC, and 680 VAC. Physical dimensions include a diameter of 37 mm and a width of 9 mm with a 19 mm lead spacing. The unit weighs approximately 21.5 g.

Inrush Current Limiters (ICL) Feature Summary

• Radial lead termination style facilitates through-hole PCB integration
• Low-ohmic NTC thermistor construction enables rapid thermal cycling
• Designed to suppress high initial charging currents in power circuits

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary winding protection
• Capacitor bank charging circuits

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific datasheet version prior to ordering, as specifications may vary between manufacturer releases. Confirm that the 25 A current rating aligns with your system's peak load requirements. Ensure the 19 mm lead pitch matches your printed circuit board layout. Check RoHS compliance status if required by your manufacturing standards.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 5 Ohm cold resistance is appropriate for limiting surge current without excessive power loss during operation. The 25 A rating suits moderate power applications. Consider the physical size constraints due to the 37 mm diameter. Verify compatibility with operating voltages up to 680 VAC.

Inrush Current Limiters (ICL) Part Context

This part belongs to the MS35 series of inrush current limiters from Vishay Ametherm. These components utilize negative temperature coefficient (NTC) technology to provide effective surge suppression. The series offers various resistance and current combinations to suit different power levels.

Inrush Current Limiters (ICL) Replacement Considerations

MS352R035

Inrush Current Limiters (ICL) FAQ

What is the dissipation constant for the MS355R025?

The dissipation constant is specified as 102.45 mW/°C.

Does the MS355R025 support high voltage AC applications?

Yes, it is rated for 120 VAC, 240 VAC, 480 VAC, and 680 VAC.