SL121R010

Inrush Current Limiters (ICL) Overview

The SL121R010 is a radial leaded inrush current limiter from the Vishay Ametherm SL12 series. It features a nominal resistance of 1 ohm with a tolerance of ±20%. The component supports a steady-state current rating of 10 A and has a maximum diameter of 12 mm. Designed for PCB mounting, it utilizes radial termination and is supplied in bulk packaging.

Inrush Current Limiters (ICL) Feature Summary

• Radial leaded construction for through-hole PCB integration
• Negative temperature coefficient ceramic composition
• High thermal mass for repeated surge cycling

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary circuits
• Capacitive load protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific datasheet revision to confirm electrical parameters match design requirements. Ensure the PCB footprint accommodates the 12 mm diameter and radial lead spacing. Confirm that the 10 A steady-state current rating exceeds the application's operational limits under all expected conditions.

Inrush Current Limiters (ICL) Selection Notes

Select this component when low initial resistance is required to minimize voltage drop during normal operation. The 1 ohm value suits applications demanding rapid stabilization after power-up. Verify that the physical size fits within the available board space constraints.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL12 series of NTC thermistors designed specifically for limiting inrush currents. The series offers various resistance values and current ratings to accommodate different power levels while maintaining consistent physical dimensions for standardized mounting.

Inrush Current Limiters (ICL) Replacement Considerations

Cross-reference with other Vishay Ametherm SL12 variants or equivalent NTC inrush limiters from other manufacturers. Ensure substitute parts match the 1 ohm resistance, 10 A current rating, and 12 mm diameter specifications.