B57237S0709M054

Inrush Current Limiters (ICL) Overview

The B57237S0709M054 is an NTC thermistor designed for inrush current limiting, manufactured by EPCOS (TDK). It features a nominal resistance of 7 Ohms with a tolerance of 20%. The component has a current rating of 4.2 A and supports voltage ratings of 110 VAC and 230 VAC. Physical dimensions include a diameter of 15 mm and a width of 7 mm, with a lead spacing of 7.5 mm. It operates within a temperature range of -55°C to +170°C and has a power rating of 3.1 W.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective inrush current limitation to protect electronic circuits during startup.
• Constructed as an NTC thermistor for reliable thermal performance.
• Designed for through-hole mounting with radial leads.

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Consumer electronics protection
• Industrial equipment circuit protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering code against official TDK documentation to ensure correct tolerance and packaging specifications. Confirm that the 7 Ohm resistance and 4.2 A current rating align with the target application's electrical requirements. Check for RoHS compliance status if required by project standards.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required 7 Ohm initial resistance and 4.2 A steady-state current capacity. Ensure the operating environment stays within the specified -55°C to +170°C range. Consider the physical size constraints regarding the 15 mm diameter and 7.5 mm lead spacing for PCB layout compatibility.

Inrush Current Limiters (ICL) Part Context

This part belongs to the B57237 series of NTC thermistors from EPCOS (TDK), specialized for inrush current limiting applications. The series offers various resistance values and current ratings to suit different power levels. EPCOS components are widely used in automotive, industrial, and consumer electronics for circuit protection.

Inrush Current Limiters (ICL) Replacement Considerations

Consult official TDK cross-reference lists for verified substitutes. Ensure any replacement matches the 7 Ohm resistance, 4.2 A current rating, and 15 mm diameter dimensions. Verify that alternative parts meet the same voltage and temperature specifications.