SL18 47003-B

Inrush Current Limiters (ICL) Overview

The Vishay Ametherm SL1847003-B is a Negative Temperature Coefficient (NTC) thermistor designed as an inrush current limiter. It features a radial leaded package with a ceramic body diameter of 19 mm. The component provides a nominal resistance of 47 Ohms with a tolerance of ±20%. It supports a steady-state current rating of 3 A and operates at voltage ratings of 115 VAC or 230 VAC. The device utilizes outside kinked leads for secure PCB mounting.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective suppression of high inrush currents during power-up cycles to protect downstream circuitry.
• Features a robust ceramic construction suitable for through-hole PCB mounting applications.
• Utilizes outside kinked lead configuration to ensure stable mechanical attachment on printed circuit boards.

Inrush Current Limiters (ICL) Applications

• Protection of electronic equipment against surge currents during initial power connection
• Integration into AC/DC power supply input stages
• Surge mitigation in consumer electronics and industrial control systems

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix 'B' corresponds to the outside kinked lead configuration, as standard variants may differ. Confirm that the 19 mm diameter and 47 Ohm resistance align with the thermal requirements of the target application. Ensure the 3 A steady-state current rating exceeds the operational load to prevent component failure during continuous use.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 19 mm body size is required for adequate energy absorption capabilities. The 47 Ohm resistance value must be compatible with the system's charging time constants. Verify compatibility with 115 VAC and 230 VAC operating environments. Consider the physical footprint constraints regarding the radial lead spacing and kinked terminal dimensions.

Inrush Current Limiters (ICL) Part Context

This part belongs to the SL18 series of inrush current limiters from Vishay Ametherm. The series offers various resistance values and current ratings within a standardized 18-19 mm form factor. These components are engineered specifically for protecting sensitive semiconductor devices from transient overcurrent conditions common in mains-powered applications.

Inrush Current Limiters (ICL) Replacement Considerations

The SL1847003 serves as a direct functional equivalent. Verify that substitute parts match the 19 mm diameter, 47 Ohm resistance, and 3 A current rating. Ensure replacement components also feature the outside kinked lead style if mechanical retention is critical to the assembly process.