SL1220003

Inrush Current Limiters (ICL) Overview

The SL1220003 is an NTC inrush current limiter from the Vishay Ametherm SL12 series. It features a nominal resistance of 20 ohms with a tolerance of ±20%. The component has a radial leaded package and a disc diameter of 12 mm (0.512 inches). It is rated for a steady-state current of 3 A and supports voltage ratings of 115 VAC and 230 VAC. The unit is UL approved and designed for PCB mounting.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes negative temperature coefficient thermistor technology to limit initial surge currents
• Provides automatic reset functionality after thermal stabilization
• Complies with UL safety standards for industrial applications

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer protection circuits
• Motor drive systems

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering suffix matches the required current and resistance specifications. Confirm that the radial lead configuration aligns with the target PCB footprint. Ensure the operating environment remains within the rated voltage limits of 115 VAC or 230 VAC. Check for RoHS compliance requirements if applicable to the final assembly.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 20-ohm cold resistance is required for moderate surge suppression. The 3 A rating suits applications with lower power demands compared to larger series units. Consider the 12 mm form factor for space-constrained designs requiring standard axial or radial mounting options.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL12 series, which offers various resistance and current combinations. The series provides standardized dimensions for easy integration into existing layouts. Vishay Ametherm manufactures these components using established ceramic processing techniques for consistent performance.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes include other Vishay Ametherm parts within the SL12 family with matching electrical parameters. Cross-brand replacements require careful verification of physical dimensions and thermal characteristics to ensure compatibility.