CL109R4120

Inrush Current Limiters (ICL) Overview

The CL109R4120 is a PTC inrush current limiter (ICL) manufactured by Vishay Ametherm. It features a nominal resistance of 9.4 Ohms with a tolerance of ±30%. The component has a maximum operating temperature of +100°C and utilizes radial PCB mounting. Physical dimensions include a diameter of 10 mm, length of 7 mm, and width of 3.5 mm. The unit weighs 2.338 g and complies with RoHS standards.

Inrush Current Limiters (ICL) Feature Summary

• High voltage rating capability to withstand repeated inrush current hits
• Radial leaded package designed for printed circuit board mounting
• Positive temperature coefficient behavior for inrush current limitation

Inrush Current Limiters (ICL) Applications

• Inrush current limiting in electric vehicle chargers
• Protection of contactors within charging systems
• Overcurrent protection circuits
• Temperature sensing applications

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific datasheet version for electrical characteristics and mechanical drawings. Confirm that the radial lead configuration matches the target PCB footprint. Ensure the maximum operating temperature of +100°C aligns with the thermal environment requirements of the intended application circuit.

Inrush Current Limiters (ICL) Selection Notes

Select this component when high voltage endurance against repeated inrush events is required. The 9.4 Ohm resistance value must be suitable for the specific circuit impedance. Verify that the 10 mm diameter fits within the available spatial constraints on the assembly. Consider the ±30% tolerance impact on peak current limiting performance.

Inrush Current Limiters (ICL) Part Context

This part belongs to the CL series of PTC thermistors from Vishay Ametherm. These devices are engineered specifically for inrush current limiting duties. The series offers various resistance values and physical sizes to accommodate different power levels and enclosure spaces.

Inrush Current Limiters (ICL) Replacement Considerations

Cross-reference other Vishay Ametherm ICL models with similar 9.4 Ohm resistance and 10 mm diameter. Verify that substitute parts meet the same voltage rating and thermal endurance specifications for equivalent performance.