SL12-22101-AT

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm SL12-22101-AT is a negative temperature coefficient (NTC) thermistor inrush current limiter from the SL12 series. It features a nominal resistance of 220 Ohms with a tolerance of ±20% and a steady-state current rating of 1 A. The component has a cylindrical diameter of 12 mm (0.472 inches) and utilizes radial leads for PCB mounting. It is designed to suppress high inrush current surges in electronic circuits.

Inrush Current Limiters (ICL) Feature Summary

• Suppresses high inrush current surges during power-up
• Radial leaded construction for printed circuit board mounting
• UL approved for safety compliance

Inrush Current Limiters (ICL) Applications

• Power control box assembly
• DIN block integration
• Transformer protection circuits

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct electrical parameters and physical dimensions. Confirm that the AT suffix aligns with the required 12 mm diameter and 1 A current rating specifications before procurement.

Inrush Current Limiters (ICL) Selection Notes

Select this component for applications requiring suppression of inrush currents up to 1 A. Ensure the PCB layout accommodates the 12 mm diameter and appropriate lead spacing. Verify thermal management requirements as the device resistance decreases significantly after initial current limiting.

Inrush Current Limiters (ICL) Part Context

This part belongs to the Vishay Ametherm SL12 series of inrush current limiters. The series offers various resistance values and current ratings within a standardized 12 mm form factor, facilitating consistent mechanical design across different power handling requirements.

Inrush Current Limiters (ICL) Replacement Considerations

Cross-reference with Vishay Ametherm part numbers such as SL1222101 or SL1222101B for equivalent 220 Ohm, 1 A specifications. Verify dimensional compatibility and lead configuration when substituting.