SL122R507BJ

Inrush Current Limiters (ICL) Overview

The SL122R507BJ is an inrush current limiter (ICL) from the Vishay Ametherm SL12 series. It features a nominal resistance of 2.5 ohms with a tolerance of ±25%. The component is designed to handle continuous currents up to 7A and operates within voltage ratings of 115 VAC and 230 VAC. It utilizes a radial kinked lead package for PCB mounting, with a body diameter of 16 mm and a width of 6 mm. The leads have a diameter of 1 mm and a spacing of 7.8 mm. The device functions as an NTC thermistor, offering a dissipation factor of 22 mW/°C.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective limitation of high inrush currents during power-up sequences
• Utilizes negative temperature coefficient characteristics for automatic resistance adjustment
• Features radial kinked leads for secure through-hole PCB installation

Inrush Current Limiters (ICL) Applications

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

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix BJ against official Vishay documentation to confirm the exact resistance tolerance and lead configuration. Ensure the selected variant matches the required thermal and electrical specifications for the target application circuit design.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required steady-state resistance and maximum continuous current handling capabilities. Consider the physical dimensions and lead style compatibility with the printed circuit board layout constraints.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL12 series of inrush current limiters manufactured by Vishay / Ametherm. These components are specialized NTC thermistors designed specifically for protecting electronic equipment from damaging surge currents during initial energization.

Inrush Current Limiters (ICL) Replacement Considerations

SL122R507 is a related variant within the same series. Verify if the standard tolerance meets requirements instead of the ±25% specified for the BJ suffix.