B57213P0109M351

Overview

The B57213P0109M351 is a Negative Temperature Coefficient (NTC) inrush current limiter from the P11 series by TDK Electronics. It features a resistance of 1 Ohm at 25°C with a tolerance of ±20%. The component supports a maximum steady-state current of 7.5 A and exhibits a hot resistance of 43 mOhms. Its physical dimensions include a diameter of 0.571 inches (14.50 mm) and a lead spacing of 0.295 inches (7.50 mm).

Feature Summary

• Provides effective limitation of high inrush currents during power-up sequences.
• Features negative temperature coefficient characteristics for self-regulating thermal protection.
• Designed for robust performance in demanding industrial and automotive environments.

Applications

• Power supply unit input stages
• Automotive electronic control units
• Industrial motor drive systems

Procurement Notes

Verify the specific suffix M351 to confirm tape and reel packaging configuration. Ensure compatibility with automated placement equipment specifications. Cross-reference the manufacturer part number against official TDK EPCOS databases to authenticate component origin and avoid counterfeit risks.

Selection Notes

Select this component based on the required 1 Ohm cold resistance and 7.5 A steady-state current capacity. Evaluate the 14.50 mm diameter for adequate PCB mounting space. Confirm that the thermal dissipation requirements align with the application's operating environment and duty cycle constraints.

Part Context

This component belongs to the P11 series of NTC inrush current limiters manufactured by TDK Electronics, formerly known as EPCOS. The series is engineered for circuit protection applications requiring reliable surge current suppression in both consumer and industrial electronics sectors.

Replacement Considerations

Consult official TDK EPCOS documentation for verified substitute part numbers within the same product family or alternative manufacturers offering equivalent electrical specifications and form factors.