SL12 8R003-B

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm SL128R003B is an NTC thermistor inrush current limiter from the SL12 series. It features a nominal resistance of 8 Ohms with a tolerance of ±20% and a maximum steady-state current rating of 3 A. The component has a cylindrical body diameter of 13 mm (0.512 inches) and utilizes radial leads for through-hole PCB mounting. Designed to protect electronic circuits, it limits initial charging currents during power-up events.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes negative temperature coefficient technology to provide high initial resistance that decreases as temperature rises
• Protects sensitive components by limiting inrush current during capacitor charging or transformer energization
• Features a robust ceramic construction suitable for repeated thermal cycling without degradation

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer primary circuits
• Capacitor bank charging protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix 'B' against the manufacturer's official documentation to confirm lead configuration and marking details. Ensure the selected variant matches the required mechanical footprint and thermal characteristics for the target application environment.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the 8 Ohm cold resistance value and 3 A current handling capability. Confirm that the 13 mm diameter fits the available board space and that the radial lead spacing aligns with the PCB layout requirements for reliable soldering.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL12 series of inrush current limiters manufactured by Vishay Ametherm. The series offers various resistance and current ratings within a standardized 13 mm form factor, providing designers with options for different power levels while maintaining consistent mechanical dimensions.

Inrush Current Limiters (ICL) Replacement Considerations

Cross-reference with SL128R003A for alternative lead configurations. Verify electrical equivalence with other 8 Ohm, 3 A ICLs from the same series before substitution.