B57237S150M54

Inrush Current Limiters (ICL) Overview

The B57237S150M54 is a thermistor-based inrush current limiter manufactured by EPCOS (TDK Electronics). It features a nominal resistance of 15 Ohms with a tolerance of ±20%. The component supports a maximum steady-state current of 3 A and has a disc diameter of 15.00 mm (0.591 inches) with a lead spacing of 7.50 mm (0.295 inches). Designed for operation within a temperature range of 0 to 25°C, it provides effective circuit protection against high initial currents.

Inrush Current Limiters (ICL) Feature Summary

• Provides reliable limiting of inrush currents during power-up sequences
• Features a compact radial leaded design suitable for space-constrained applications
• Constructed with UL approval agency certification for safety compliance

Inrush Current Limiters (ICL) Applications

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

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific suffix 'M54' against official TDK-EPC documentation to confirm lead configuration and marking details. Ensure that the 15 Ohm resistance value aligns with the target circuit's thermal requirements. Confirm RoHS3 compliance status if restricted substances are a constraint for the final assembly process.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 15 Ohm initial impedance is required to limit peak current to approximately 3 Amperes. Consider the physical dimensions of the 15 mm disc and 7.5 mm lead spacing for PCB layout compatibility. Evaluate the thermal dissipation capabilities relative to the duty cycle of the application environment.

Inrush Current Limiters (ICL) Part Context

This part belongs to the EPCOS ICL series, which utilizes ceramic materials to manage transient currents. The product line is managed under TDK Electronics following the corporate restructuring involving Siemens Matsushita Components. These components are engineered for robust performance in various electronic assemblies requiring surge protection.

Inrush Current Limiters (ICL) Replacement Considerations

Consult official cross-reference lists for equivalent parts with matching 15 Ohm resistance and 3 A current ratings. Verify that any substitute maintains the same 15 mm diameter and lead spacing to ensure mechanical fit without modification.