YFF21PC1E474M

Overview

The TDK YFF21PC1E474M is a three-terminal EMI feedthrough filter capacitor designed for surface-mount applications. It features a capacitance of 0.47 µF with a tolerance of ±20%, rated for a maximum DC voltage of 25 V. The component utilizes C0G dielectric characteristics to ensure stability across varying temperatures and frequencies. Housed in an 0805 (2012 Metric) package, it offers low impedance performance suitable for high-frequency noise suppression. The device is compliant with AEC-Q200 standards, indicating its suitability for automotive electronic environments requiring robust reliability and consistent electrical performance under stress.

Feature Summary

• Three-terminal architecture provides superior high-frequency noise attenuation compared to standard two-terminal capacitors.
• C0G dielectric material ensures minimal capacitance variation over temperature changes and applied voltage.
• AEC-Q200 qualification confirms compliance with rigorous automotive electronics reliability standards.
• Compact 0805 surface-mount footprint facilitates automated assembly and dense PCB layout.

Applications

• Automotive infotainment system power line filtering
• On-board charger (OBC) input/output noise suppression
• Electronic control unit (ECU) power distribution networks
• High-speed data interface protection against electromagnetic interference

Procurement Notes

Verify the specific suffix code against official TDK documentation to confirm exact specifications, as generic part numbers may obscure critical variations. Confirm that the procurement source provides authentic manufacturer traceability. Ensure the component meets current RoHS directives if required by your manufacturing process. Cross-reference the datasheet revision date to guarantee compatibility with your design requirements. Validate that the supplier handles ESD-sensitive components appropriately during storage and transit.

Selection Notes

Select this component when high-frequency common-mode noise suppression is critical in space-constrained automotive designs. The three-terminal structure offers lower effective series inductance than standard MLCCs, enhancing performance at MHz frequencies. Consider the 25 V rating relative to the actual circuit operating voltage to maintain safety margins. Evaluate the thermal management capabilities of the PCB layout, as self-heating can affect longevity. Compare impedance curves in the datasheet against the target noise spectrum to ensure adequate attenuation.

Part Context

This component belongs to TDK's YFF-PC series of feedthrough capacitors, specifically engineered for automotive applications. The series is characterized by its ability to handle high ripple currents while maintaining stable capacitance. It complements other EMI suppression solutions by providing targeted filtering for sensitive digital and analog circuits within vehicles. The YFF-PC designation indicates specific terminal configurations and packaging styles optimized for reflow soldering processes.

Replacement Considerations

Publicly confirmed direct substitutes are not available in the provided reference material. Alternative components from other manufacturers require careful evaluation of pin compatibility, impedance profiles, and AEC-Q200 certification status. Verify that any replacement matches the 0805 footprint and 25 V rating exactly. Consult TDK technical support for validated cross-references before implementing changes in production designs.