B57238S0479M051

Inrush Current Limiters (ICL) Overview

The B57238S0479M051 is an NTC thermistor designed for inrush current limiting. It features a nominal resistance of 4.7 Ohms at 25°C with a tolerance of ±20%. The component supports a maximum steady-state current of 6.6A and has a disc diameter of 16mm (0.630 inches). It utilizes radial leads for PCB mounting.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective limitation of high inrush currents during power-up sequences
• Offers robust protection against overcurrent conditions in electronic circuits
• Ensures long-term stability and reliability under demanding operating conditions

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Consumer electronics devices
• Industrial control systems

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific part number suffix to confirm lead type and package dimensions. Ensure the selected variant matches the required steady-state current rating for the target application circuit. Confirm compliance with relevant environmental standards before integration.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required 4.7 Ohm resistance value and 6.6A steady-state current capacity. Evaluate the thermal environment to ensure the device operates within its specified temperature range. Consider the physical size constraints for PCB layout compatibility.

Inrush Current Limiters (ICL) Part Context

This component belongs to the B57238 series of NTC thermistors manufactured by TDK Electronics, formerly EPCOS. These devices are specialized for protecting sensitive electronic components from damage caused by excessive initial current flow when power is applied.

Inrush Current Limiters (ICL) Replacement Considerations

Compatible substitutes include other NTC inrush limiters with matching 4.7 Ohm resistance and similar current ratings. Verify that alternative parts maintain equivalent thermal characteristics and mechanical dimensions for direct replacement.