B57237S229M54

Inrush Current Limiters (ICL) Overview

The B57237S229M54 is an NTC thermistor for inrush current limiting manufactured by EPCOS (TDK). It features a nominal resistance of 2.2 Ohms with a tolerance of 20%. The component has a current rating of 7 A and supports voltages of 110 VAC and 230 VAC. It operates within a temperature range of -55°C to +170°C. The physical dimensions include a diameter of 15 mm. The power rating is specified at 3.1 W.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective inrush current limitation for electronic circuits
• Utilizes negative temperature coefficient characteristics for self-regulating protection
• Designed for robust performance across wide operating temperature ranges

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Consumer electronics protection
• Industrial equipment surge suppression

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering code against official TDK documentation to ensure correct resistance and tolerance specifications. Confirm that the package type matches the required assembly process. Check RoHS compliance status if environmental regulations apply to the final product. Ensure the thermal environment does not exceed the maximum operating temperature limits defined in the datasheet.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required steady-state resistance and peak current handling capabilities. Ensure the voltage rating aligns with the system's AC line requirements. Consider the thermal dissipation characteristics and mounting orientation to maintain reliable operation under continuous load conditions without exceeding power ratings.

Inrush Current Limiters (ICL) Part Context

This part belongs to the B57237 series of leaded NTC thermistors designed specifically for inrush current limiting applications. These components are widely used in power supplies and other electronic devices to protect sensitive circuitry from high initial charging currents during startup phases.

Inrush Current Limiters (ICL) Replacement Considerations

Compatible substitutes include B57237S709M54 and B57235S809M51, though these offer different resistance values and current ratings. Verify electrical parameters match the original design requirements before substitution.