SL1222101AT

Inrush Current Limiters (ICL) Overview

The SL1222101AT is a Negative Temperature Coefficient (NTC) thermistor designed as an inrush current limiter. It features a nominal resistance of 220 Ohms with a tolerance of ±20%. The component has a steady-state current rating of 1 Ampere and a diameter of 12 millimeters. It utilizes radial kinked leads for through-hole mounting on printed circuit boards.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes NTC thermistor technology to limit initial surge currents during power-up
• Features radial kinked lead configuration for secure PCB mounting
• Designed for repeated cycling applications requiring reliable inrush protection

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary circuits
• Motor drive inputs

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix 'AT' against the manufacturer's official datasheet to confirm lead material, plating specifications, and bending characteristics. Ensure the selected variant matches the required thermal endurance and mechanical stress ratings for the target assembly process. Cross-reference the part number with authorized distributors to confirm availability and authenticity.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required cold resistance value of 220 Ohms and the maximum continuous current capacity of 1 A. Evaluate the physical dimensions to ensure the 12 mm diameter fits within the designated PCB footprint. Confirm that the voltage ratings and energy absorption capabilities align with the peak inrush conditions of the specific application circuit.

Inrush Current Limiters (ICL) Part Context

This part belongs to the Vishay Ametherm SL series of inrush current limiters. These components are engineered to protect electronic equipment from damage caused by high initial charging currents. The series offers various resistance values and current ratings to suit different power levels and form factors.

Inrush Current Limiters (ICL) Replacement Considerations

Compatible substitutes include the SL1222101A and SL1222101B. Verify that alternative parts maintain identical electrical parameters, specifically the 220 Ohm resistance and 1 A current rating, while ensuring mechanical compatibility with existing board layouts.