MS2222103

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm MS2222103 is a MegaSurge series inrush current limiter (ICL) designed for circuit protection. It features a resistance of 220 Ohms at 25°C with a tolerance of ±25%. The component supports a maximum steady-state current of 3.5 A and has a diameter of 23.00 mm (0.906 inches). It utilizes radial leads with a spacing of 7.80 mm (0.307 inches) for PCB mounting. The device is UL certified and complies with RoHS3 standards.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective protection against transformer inrush currents
• Features high energy absorption capability for repeated cycling
• Includes UL certification for safety compliance

Inrush Current Limiters (ICL) Applications

• Transformer protection in power supplies
• Industrial automation equipment
• Embedded systems requiring surge suppression

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix 'B' if required by design, as it may denote packaging or variant differences. Confirm lead times due to potential manufacturing delays. Ensure compatibility with existing PCB footprint dimensions, specifically the 7.80 mm lead spacing and 23 mm diameter. Check RoHS3 compliance status for regulatory requirements.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 220 Ohm cold resistance is needed to limit initial surge. The 3.5 A steady-state rating suits moderate current applications. Consider the 23 mm size for adequate heat dissipation. Verify that the ±25% tolerance aligns with system sensitivity requirements for inrush limiting.

Inrush Current Limiters (ICL) Part Context

Part of the MegaSurge™ series from Vishay / Ametherm, specializing in NTC thermistors for inrush current limiting. This series is engineered for reliable performance in protecting sensitive electronic components from high initial current spikes during power-up phases.

Inrush Current Limiters (ICL) Replacement Considerations

MS2222103-B is an alternative designation for the same component. Cross-reference with other 220 Ohm, 3.5 A ICLs from the MegaSurge family if supply constraints exist.