NFM21HC474R1A3D

Overview

The Murata NFM21HC474R1A3D is a three-terminal feedthrough capacitor designed for surface mount applications. It features a capacitance of 0.47 µF with a tolerance of ±20% and a DC voltage rating of 10 V. The component operates within a temperature range of -55°C to +125°C and utilizes an 0805 (2012 metric) package size. It exhibits a maximum DC resistance of 30 mΩ and supports a rated current of 2 A. The device meets AEC-Q200 qualification standards, ensuring reliability for automotive environments.

Feature Summary

• Three-terminal architecture provides superior high-frequency noise suppression compared to standard two-terminal capacitors by minimizing parasitic inductance.
• Automotive-grade construction ensures compliance with AEC-Q200 qualification requirements for durability and performance stability.
• Low impedance design facilitates efficient power line filtering while maintaining signal integrity in sensitive circuits.

Applications

• Power supply noise filtering in automotive electronic control units
• High-frequency interference suppression in mobile communication devices
• EMI mitigation in industrial control systems requiring robust thermal stability

Procurement Notes

Verify the complete part number including suffixes to ensure correct packaging and terminal configuration. Confirm that the specific variant matches the required voltage and capacitance specifications for the target circuit. Cross-reference manufacturer documentation to validate compliance with relevant environmental regulations and automotive quality standards before integration.

Selection Notes

Select this component when high-current handling capability and low parasitic inductance are critical for noise reduction. The three-terminal design offers better performance than standard capacitors at high frequencies. Ensure the PCB layout accommodates the specific pad configuration required for optimal grounding and signal path efficiency.

Part Context

This component belongs to the EMIFIL NFM21HC series, which specializes in three-terminal feedthrough capacitors. The series is engineered for demanding applications requiring effective electromagnetic interference suppression. The HC designation indicates automotive-grade qualification, distinguishing it from standard commercial variants within the broader NFM family.

Replacement Considerations

Direct substitutes include other Murata three-terminal feedthrough capacitors with matching 0.47 µF capacitance, 10 V rating, and 0805 footprint. Verify that alternative parts meet the same AEC-Q200 qualification and current handling requirements to maintain system reliability and noise suppression performance.