MS3220010

Inrush Current Limiters (ICL) Overview

The MS3220010 is a negative temperature coefficient (NTC) thermistor inrush current limiter from the Vishay Ametherm MegaSurge MS32 series. Designed for PCB mounting with radial leads, this component limits initial surge currents to protect downstream electronics. It features a nominal resistance of 20 Ohms with a tolerance of ±25%. The device supports a maximum steady-state current of 10 A at 65°C and withstands peak voltages up to 250 VAC. With a diameter of approximately 32 mm, it serves as a robust circuit protection solution for AC power inputs.

Inrush Current Limiters (ICL) Feature Summary

• Provides simple one-component surge suppression replacing complex resistor-timer-relay circuits
• Utilizes NTC thermistor technology to dynamically reduce resistance after startup
• UL approved for enhanced safety compliance in power supply applications

Inrush Current Limiters (ICL) Applications

• Switching mode power supplies (SMPS)
• AC/DC converter input stages
• Consumer electronic power adapters
• Industrial control equipment power inputs

Inrush Current Limiters (ICL) Procurement Notes

Verify that the specific order matches the MS3220010 part number exactly, ensuring the 20 Ohm resistance and 10 A current rating align with design requirements. Confirm package type is radial leaded for PCB mounting. Check for UL certification marks on documentation to ensure regulatory compliance. Validate thermal management capabilities for the intended operating environment.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a compact, cost-effective solution is needed to limit inrush current without active control circuitry. Ensure the system's steady-state current does not exceed 10 A to prevent overheating. Verify that the 20 Ohm initial resistance is compatible with the connected load's startup characteristics. Consider the physical dimensions for adequate spacing on the printed circuit board.

Inrush Current Limiters (ICL) Part Context

This component belongs to the MegaSurge MS32 series of inrush current limiters manufactured by Vishay Ametherm. The series offers various resistance and current ratings tailored for different power levels. These NTC thermistors are widely used in general-purpose power filtering and protection across global electronics manufacturing standards.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes must match the 20 Ohm resistance, 10 A current rating, and similar physical footprint. Cross-reference with other manufacturers' MS32-compatible parts or equivalent Vishay Ametherm variants within the same series family.