ICL100D25MIC

Inrush Current Limiters (ICL) Overview

The ICL100D25MIC is a Negative Temperature Coefficient (NTC) thermistor from the Eaton Electronics ICL family, designed for inrush current limiting. It features a nominal resistance of 1 Ohm at standard reference conditions and utilizes an 'I lead' configuration with a 25 mm bead size. The component exhibits a Beta value of 2750 K defined by the B1 standard, with a Beta tolerance of J. This specific part number identifies the electrical and physical characteristics required for circuit protection applications.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC technology to provide high initial resistance that decreases rapidly as temperature rises during operation.
• Engineered with a robust 25 mm bead size and I-lead construction to withstand significant thermal and mechanical stress.
• Designed specifically to limit peak inrush currents in power supply circuits without triggering premature fuse blowouts.

Inrush Current Limiters (ICL) Applications

• Inrush current limiting for AC/DC power supplies
• Protection of switching mode power supplies (SMPS)
• Surge current suppression in electronic ballasts

Inrush Current Limiters (ICL) Procurement Notes

Verify the exact Beta value and tolerance against the manufacturer's datasheet, as variations exist within the ICL family. Confirm the lead type and bead dimensions match the PCB layout requirements. Ensure the maximum steady-state current rating aligns with the application's operational load to prevent thermal runaway or component failure during continuous use.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required nominal resistance of 1 Ohm and the specific 25 mm form factor. The 2750 K Beta value dictates the temperature-resistance curve, which must match the system's thermal management strategy. Consider the maximum allowable current and the ambient operating temperature range to ensure reliable performance under all expected load conditions.

Inrush Current Limiters (ICL) Part Context

This part belongs to the Eaton ICL series of inrush current limiters. These components are widely used in industrial and consumer electronics to protect sensitive downstream components from the high initial charging currents associated with capacitive loads. The ICL designation indicates a specific combination of resistance, size, and thermal characteristics optimized for repeated surge events.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes include other Eaton ICL parts with matching 1 Ohm resistance and 25 mm size, such as ICL100D25MIB if Beta tolerance differences are acceptable. Cross-manufacturer replacements require verifying identical resistance curves, maximum current ratings, and physical footprint compatibility to maintain circuit integrity.