B57237S0109M054

Inrush Current Limiters (ICL) Overview

The B57237S0109M054 is an NTC thermistor for inrush current limiting manufactured by EPCOS (TDK). It features a nominal resistance of 10 Ohms with a tolerance of 20%. The component has a current rating of 4.2 A and supports voltages of 110 VAC and 230 VAC. Physical dimensions include a diameter of 15 mm, width of 7 mm, lead diameter of 0.8 mm, and lead spacing of 7.5 mm. It operates within a temperature range of -55°C to +170°C, with a power rating of 3.1 W.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective inrush current limitation in electronic circuits
• Constructed as a leaded and coated disk type NTC thermistor
• Designed for robust performance across wide operating temperatures

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 suffix M054 against official TDK documentation to confirm packaging and marking details. Ensure the application voltage does not exceed the rated 230 VAC limit. Confirm thermal management requirements align with the 3.1 W power rating and operating temperature range. Cross-reference the 10 Ohm resistance value with circuit design specifications to ensure proper inrush limiting characteristics.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 10 Ohm initial resistance is required for inrush current control. Consider the 4.2 A current rating and 15 mm diameter for physical space constraints. Evaluate the -55°C to +170°C operating range against environmental conditions. Compare with similar series parts if different resistance values or package sizes are needed.

Inrush Current Limiters (ICL) Part Context

This part belongs to the B57237S0 series of NTC thermistors designed specifically for inrush current limiting applications. These components are characterized by their negative temperature coefficient properties, which reduce resistance as they heat up during operation. The series is widely used in protecting sensitive electronic components from high startup currents.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes must match the 10 Ohm resistance, 4.2 A rating, and 15 mm diameter. Verify compatibility with the 20% tolerance and 3.1 W power rating. Check lead spacing and diameter for PCB mounting alignment. Consult official cross-reference lists for approved alternatives.