B57238S0509M000

Inrush Current Limiters (ICL) Overview

The B57238S0509M000 is a radial leaded NTC thermistor inrush current limiter from the S238 series. It features a nominal resistance of 5 Ohms with a ±20% tolerance and a steady-state current rating of 6.4 A. Designed for PCB mounting, it supports voltage ratings of 115 VAC and 230 VAC. The component has a disk diameter of 16 mm and operates within a temperature range of -55°C to +170°C.

Inrush Current Limiters (ICL) Feature Summary

• Provides surge suppression by limiting high initial charging currents in electronic circuits
• Utilizes negative temperature coefficient characteristics to reduce resistance during operation
• Constructed as a coated disk for robust mechanical and electrical performance

Inrush Current Limiters (ICL) Applications

• Mains-side surge suppression in power supplies
• Inrush current limiting for capacitive loads
• Protection of electronic circuits against startup current spikes

Inrush Current Limiters (ICL) Procurement Notes

Verify that the specific part number matches the required resistance and current ratings for the target application. Confirm that the radial lead spacing and package dimensions are compatible with the printed circuit board layout. Ensure compliance with relevant safety standards such as UL approval if required for the end product.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the need for a 5 Ohm starting resistance and a 6.4 A steady-state current capacity. Consider the 16 mm diameter and radial leads for through-hole PCB integration. Evaluate the operating temperature range and voltage ratings to ensure suitability for the specific AC mains environment.

Inrush Current Limiters (ICL) Part Context

This component belongs to the EPCOS (TDK) S238 series of NTC thermistors specifically designed for inrush current limiting. These devices are widely used in industrial and consumer electronics to protect sensitive components from damage caused by high transient currents during power-up phases.

Inrush Current Limiters (ICL) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.