B57213P0409M351

Overview

The B57213P0409M351 is an inrush current limiting NTC thermistor from the EPCOS P13 Series. It is designed for high power currents ranging from 2.5 to 7A within a temperature range of -40°C to 150°C. The component features a resistance value of 4 Ohms at 25°C with a tolerance of ±20%. Its maximum steady-state current rating is 6A, and it has a diameter of 14.5mm (0.571 inches) with a lead spacing of 7.50mm (0.295 inches).

Feature Summary

• Provides effective inrush current limitation for electronic circuits.
• Constructed as a leaded and coated disk suitable for robust applications.
• Operates reliably across a wide industrial temperature spectrum.

Applications

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

Procurement Notes

Verify the specific manufacturer part number against official TDK or EPCOS documentation to ensure authenticity. Confirm that the component meets required safety certifications such as UL, VDE, or CQC if applicable to your design. Cross-reference datasheet parameters like resistance and current ratings with your system requirements before finalizing procurement orders.

Selection Notes

Select this component based on its 4 Ohm resistance and 6A steady-state current capacity. Ensure the operating environment stays within the specified -40°C to 150°C range. Consider the physical dimensions of 14.5mm diameter and 7.50mm lead spacing for proper PCB layout integration and mechanical clearance during assembly.

Part Context

This component belongs to the EPCOS P13 series of inrush current limiters. EPCOS, now part of the TDK Group, manufactures these components to protect electronic circuits from voltage spikes and current surges. The series is widely used in automotive, industrial, and consumer electronics to ensure stable power supply and prevent operational failures.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.