MS2212102A

Inrush Current Limiters (ICL) Overview

The MS2212102A is a radial leaded inrush current limiter (ICL) from the Vishay Ametherm MS series. It features a nominal resistance of 120 Ohms with a tolerance of ±25% and a continuous current rating of 2 A. The component has a cylindrical body diameter of 23 mm (0.906 inches). Designed for PCB mounting, it utilizes axial leads for through-hole installation.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective limitation of high inrush currents during power-up sequences to protect downstream components.
• Features a thermistor element that exhibits high resistance at cold start and decreases as temperature rises.
• Constructed with a robust cylindrical encapsulation suitable for standard printed circuit board assembly processes.

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary circuits
• Capacitive load protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix 'A' against the manufacturer's latest datasheet to confirm dimensional or material specifications. Ensure the selected variant matches the required 120 Ohm resistance and 2 A current rating for the target application. Confirm package type compatibility with automated assembly equipment.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 120 Ohm initial resistance is required to limit peak charging currents. The 2 A rating defines the steady-state operating limit. Consider the 23 mm diameter for adequate thermal dissipation and mechanical clearance on the PCB layout relative to adjacent components.

Inrush Current Limiters (ICL) Part Context

This part belongs to the MS series of inrush current limiters manufactured by Vishay / Ametherm. These devices are NTC thermistors designed specifically for electronic circuits requiring surge protection. The MS series offers various resistance values and physical sizes to accommodate different power levels and form factors.

Inrush Current Limiters (ICL) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other Vishay Ametherm MS series parts or equivalent ICLs only if electrical parameters and dimensions match exactly.