MS2220005B

Inrush Current Limiters (ICL) Overview

The MS2220005B is a negative temperature coefficient (NTC) thermistor inrush current limiter manufactured by Vishay Ametherm. It belongs to the MS series and features a disc shape with a diameter of 22 mm. The component provides a cold resistance of 20 Ohms with a tolerance of ±25% at 25°C. It supports a maximum steady-state current of 5 Amps and can handle a maximum recommended energy of 180 Joules. The device is designed for PCB mounting and operates within a standard temperature range.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC thermistor technology to limit inrush current during power-up
• Features a robust 22mm disc form factor suitable for through-hole or surface mount applications
• Rated for high steady-state current handling up to 5 Amps
• Provides reliable energy absorption capability of 180 Joules

Inrush Current Limiters (ICL) Applications

• Consumer electronics power supply input stages
• Industrial equipment surge protection
• General-purpose AC/DC converter circuits

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix 'B' against the official Vishay datasheet to confirm any distinct mechanical or marking variations compared to the base MS2220005 model. Ensure that the procurement documentation explicitly references the UL approval status if required for your specific application compliance standards. Cross-reference the 20 Ohm resistance value with the ±25% tolerance band to confirm suitability for your circuit design constraints.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 22mm diameter NTC limiter is required for circuits drawing up to 5 Amps steady state. The 20 Ohm initial resistance is suitable for limiting peak charging currents in moderate-capacitance loads. Consider the 180 Joule energy rating to ensure the component can withstand the specific surge profile of the target application without thermal failure. Verify that the operating temperature range meets the environmental requirements of the end product.

Inrush Current Limiters (ICL) Part Context

This part is part of the MS series of inrush current limiters from Vishay Ametherm, which are widely used for protecting electronic components from high initial charging currents. The MS series offers various diameters and resistance values to accommodate different power levels. The MS2220005B specifically addresses mid-range current applications requiring a balance between size and surge handling capacity.

Inrush Current Limiters (ICL) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Direct replacement requires matching the 22mm diameter, 20 Ohm resistance, 5A current rating, and 180 Joule energy absorption capabilities. Consult Vishay technical support for qualified alternatives if the exact part number is unavailable.