ICL070D18MIC

Inrush Current Limiters (ICL) Overview

The ICL070D18MIC is a negative temperature coefficient (NTC) thermistor from the Eaton ICL family, designed for inrush current limiting. It features a nominal resistance of 0.7 ohms at standard reference conditions and utilizes an I-lead configuration with a body diameter of 18 mm. The component exhibits a Beta value of 2600 K, adhering to B1 beta definition standards. Electrical tolerance is specified as ±20% for both resistance and Beta parameters. The device supports a steady-state current rating of 15 A and offers a peak current capacity of 15 A.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC characteristics to provide high initial impedance that decreases rapidly upon heating, effectively restricting surge currents during power-up.
• Constructed with robust I-leads and a compact 18 mm body size, facilitating secure mechanical mounting and reliable electrical connections in dense assemblies.
• Engineered to withstand significant thermal stress, ensuring stable performance under repeated inrush events without degradation of limiting capabilities.

Inrush Current Limiters (ICL) Applications

• Power supply input stages for surge current protection
• Transformer primary circuit inrush limitation
• Motor drive input filtering and protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific Beta constant and tolerance class against the manufacturer's official datasheet prior to procurement, as variations may exist between production batches or regional specifications. Confirm that the 15 A steady-state current rating aligns with the operational requirements of the target application circuit to prevent thermal overload. Ensure compatibility with the I-lead termination style for proper PCB or chassis mounting integration.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a low nominal resistance of 0.7 ohms is required for minimal voltage drop during normal operation while still providing effective surge suppression. The 18 mm diameter and 15 A current rating make it suitable for medium-power applications where space constraints allow for this form factor. Consider the 2600 K Beta value for accurate temperature-resistance modeling in control loops requiring thermal compensation.

Inrush Current Limiters (ICL) Part Context

This part belongs to the Eaton ICL series of inrush current limiters, which are specialized NTC thermistors engineered for electronic power systems. The series offers various resistance values and physical sizes to match different power levels. The ICL070D18MIC specifically targets applications needing moderate surge protection with low insertion loss, distinguishing it from higher-resistance variants used in lower-power circuits.

Inrush Current Limiters (ICL) Replacement Considerations

Cross-reference with other Eaton ICL series parts such as ICL070D15MIC or ICL070D20MIC if dimensional changes are acceptable. Verify that substitute components maintain the same 0.7 ohm resistance and 15 A current handling capability to ensure equivalent circuit performance.