SL1816004

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm SL1816004 is a radial leaded inrush current limiter designed for PCB mounting. It features a nominal resistance of 16 Ohms with a tolerance of ±20%. The component has a current rating of 4 A and voltage ratings of 115 VAC and 230 VAC. Physical dimensions include an 18 mm diameter, 6.5 mm width, and 7.8 mm lead spacing.

Inrush Current Limiters (ICL) Feature Summary

• Radial leaded construction for through-hole PCB integration
• Thermistor-based inrush current limiting functionality
• Compliant with RoHS directives

Inrush Current Limiters (ICL) Applications

• Power supply input protection
• Transformer inrush current suppression
• Capacitive load switching circuits

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific datasheet version for thermal derating curves and maximum energy absorption limits. Confirm that the 16 Ohm resistance value aligns with the target circuit's steady-state requirements. Ensure the 4 A current rating exceeds the peak operational demand to prevent device failure during normal operation.

Inrush Current Limiters (ICL) Selection Notes

Select this part when a 16 Ohm initial impedance is required to limit surge currents up to 4 A. The 18 mm diameter package provides sufficient thermal mass for repeated cycling. Verify compatibility with standard PCB footprints requiring 7.8 mm lead spacing and radial termination styles.

Inrush Current Limiters (ICL) Part Context

This component belongs to the SL18 series of inrush current limiters from Vishay Ametherm. The series offers various resistance values and physical sizes to accommodate different power levels. These devices utilize NTC thermistor technology to provide high initial resistance that decreases as temperature rises.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes within the same series include SL1810004 (10 Ohms) and SL1822004 (22 Ohms). Cross-brand replacements require matching the 16 Ohm resistance, 4 A rating, and 18 mm form factor.