ICL321R030-01

Inrush Current Limiters (ICL) Overview

The Honeywell ICL321R030-01 is a positive temperature coefficient (PTC) thermistor designed for inrush current limiting applications. It features a nominal resistance of 1 Ohm with a tolerance of ±20%. The component supports a maximum steady-state current of 30 A and operates within a temperature range from -40°C to 185°C. Physically, it has a radial lead configuration with a length of 1.260 inches (32.00 mm) and is coated in black silicone for protection.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective limitation of high inrush currents during power supply activation to protect sensitive components
• Features a rugged design with solderable leads and protective black silicone coating
• Offers resettable functionality as a PTC device after fault conditions clear

Inrush Current Limiters (ICL) Applications

• Switching power supplies
• Power devices requiring surge protection
• Equipment turn-on circuits

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific part number suffix against official Honeywell documentation to ensure correct resistance and current ratings. Confirm that the radial lead spacing matches your PCB footprint requirements. Check datasheet specifications for maximum operating temperature limits relative to your application environment. Ensure the selected variant meets the required steady-state current capacity for your circuit design.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a cost-effective solution for limiting initial surge currents is required. Consider the 1 Ohm resistance value and 30 A rating to ensure compatibility with your power supply's peak current demands. Evaluate the thermal characteristics and cooling requirements based on the 185°C maximum operating temperature limit specified by the manufacturer.

Inrush Current Limiters (ICL) Part Context

This component belongs to Honeywell's ICL series of inrush current limiters. These devices utilize PTC technology to dynamically adjust resistance based on temperature changes. The series provides reliable protection for electronic equipment against damage caused by high initial charging currents during startup phases.

Inrush Current Limiters (ICL) Replacement Considerations

Consult official Honeywell substitution guides for verified equivalent parts. Ensure any replacement maintains identical resistance values, current ratings, and physical dimensions. Verify that alternative components meet the same thermal and electrical performance standards documented in the original datasheet.