B57213P0259M301

Overview

The B57213P0259M301 is a leaded and coated disk inrush current limiter (ICL) from the P13 series by EPCOS, now part of TDK. It features a nominal resistance of 2.5 Ohms with a tolerance of ±20%. The component supports a maximum steady-state current of 6.5 A and has a diameter of 14.5 mm (0.571 inches). Key electrical parameters include a resistance at different currents of 197 mOhms and a lead spacing of 7.50 mm (0.295 inches). It is designed for robust circuit protection against high initial surge currents.

Feature Summary

• Provides effective limitation of inrush currents during power-up phases to protect sensitive downstream components.
• Constructed as a leaded and coated disk element, ensuring mechanical stability and environmental resilience.
• Offers rapid thermal response characteristics suitable for repeated switching cycles in various electronic applications.

Applications

• Power supply input stages requiring surge current suppression
• Consumer electronics devices with high startup current demands
• Industrial control systems utilizing relay or contactor inputs

Procurement Notes

Verify the specific ordering suffix M301 corresponds to the required packaging format and lead configuration. Confirm that the 2.5 Ohm resistance value aligns with the system's inrush limiting calculations. Ensure compatibility with the intended operating temperature range and steady-state current requirements before finalizing procurement.

Selection Notes

Select this component when a low-resistance NTC thermistor is needed for moderate current applications up to 6.5 A. The 14.5 mm diameter offers a balance between size and energy absorption capability. Consider the ±20% tolerance for circuit design margins. This part is suitable where standard leaded mounting is preferred over surface mount alternatives.

Part Context

This component belongs to the B57213P series of inrush current limiters manufactured by EPCOS, which operates under the TDK Group. The P13 series specifically denotes leaded and coated disk thermistors designed for general-purpose circuit protection. These parts are widely used across consumer, industrial, and automotive sectors for reliable surge management.

Replacement Considerations

Direct substitutes within the same series may include B57213P0160M351 for higher resistance applications. Cross-reference with other manufacturers' 14.5 mm ICLs if form factor constraints exist. Verify that alternative parts meet the same 6.5 A steady-state current rating and voltage specifications.