B57238S0259M000

Inrush Current Limiters (ICL) Overview

The B57238S0259M000 is a leaded NTC thermistor designed for inrush current limiting, manufactured by TDK under the EPCOS brand. It features a nominal resistance of 5 Ohms with a ±20% tolerance at 25°C. The component supports a maximum steady-state current of 6.4 A and operates within a temperature range of -55°C to +170°C. Key physical dimensions include a 16 mm diameter and a 7.5 mm lead spacing. It carries UL certification and complies with RoHS3 standards.

Inrush Current Limiters (ICL) Feature Summary

• Utilizes negative temperature coefficient (NTC) characteristics to provide high initial resistance that decreases as temperature rises, effectively suppressing startup surge currents.

Inrush Current Limiters (ICL) Applications

• Switch-mode power supplies
• Overcurrent protection circuits

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering suffix against official TDK documentation to ensure correct packaging and marking specifications. Confirm that the selected variant matches the required thermal and electrical ratings for the target application environment. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on its 5 Ohm resistance value and 6.4 A current rating to match the specific inrush requirements of the design. Ensure the operating temperature range of -55°C to +170°C aligns with the environmental conditions of the installation site. Verify that the radial leaded package and 16 mm disk size fit within the available PCB footprint and mechanical constraints of the assembly.

Inrush Current Limiters (ICL) Part Context

This part belongs to the S238 series of NTC thermistors specifically engineered for inrush current limiting applications. The series offers various resistance values and current ratings to suit different power supply designs. As a leaded and coated disk component, it provides robust mechanical stability and reliable performance in electronic circuit protection roles across industrial and consumer electronics.

Inrush Current Limiters (ICL) Replacement Considerations

Potential substitutes within the same family include B57238S0509M000 and B57238S0259M000 variants with differing resistance or current ratings. Any replacement must be verified to ensure identical mounting dimensions, lead spacing, and thermal characteristics to maintain circuit integrity without redesigning the PCB layout.

Inrush Current Limiters (ICL) FAQ

What is the maximum steady-state current rating for the B57238S0259M000?

The maximum steady-state current rating is 6.4 A.

Does the B57238S0259M000 have UL certification?

Yes, the component holds UL certification for safety compliance.