B57238S0100M051

Inrush Current Limiters (ICL) Overview

The B57238S0100M051 is an NTC thermistor inrush current limiter from the S237 series, designed for PCB mounting with radial leads. It features a nominal resistance of 10 Ohms with a tolerance of ±20%. The component supports voltage ratings of 115 VAC and 230 VAC, with a rated current of 5 A. Physical dimensions include a diameter of 16.00 mm (0.630 inches) and a lead spacing of 5 mm. It operates within a temperature range of -55°C to +170°C, dissipating heat at a factor of 20 mW/K, with a power rating of 3.9 W.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes negative temperature coefficient technology to limit high initial charging currents in electronic circuits.
• Provides robust protection against thermal stress during power-up phases through rapid resistance reduction.
• Features a coated disk design suitable for reliable surface mounting on printed circuit boards.

Inrush Current Limiters (ICL) Applications

• Switching power supplies
• Industrial control systems
• Consumer electronics

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering code against official TDK documentation to ensure correct series identification. Confirm that the S237 series specifications align with the required voltage and current parameters for the target application. Check for any recent process change notifications or datasheet updates that may affect performance characteristics or availability.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on its 10 Ohm nominal resistance and 5 A current rating to match the circuit's surge requirements. Ensure the physical footprint accommodates the 16 mm diameter and 5 mm lead spacing. Validate that the operating temperature range meets the environmental conditions of the installation site.

Inrush Current Limiters (ICL) Part Context

This part belongs to the EPCOS (now TDK Electronics) B57238S series of NTC inrush current limiters. These components are engineered to protect sensitive electronic devices from damage caused by high inrush currents during startup. The S237 variant specifically denotes the physical size and lead configuration optimized for standard PCB layouts.

Inrush Current Limiters (ICL) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs before considering alternative manufacturers or series.