YFF21AC1A475MT0Y0N

Overview

The TDK YFF21AC1A475MT0Y0N is an automotive-grade EMI feedthrough filter capacitor designed for surface-mount applications. It features a capacitance of 4.7 µF with a ±20% tolerance and a voltage rating of 10 VDC. The component supports a maximum DC current of 4 A and has a maximum DC resistance of 300 mΩ. It operates within a temperature range of -55°C to +125°C and meets the AEC-Q200 qualification standard. The device utilizes a 0805 (2012 Metric) package with a height of 0.85 mm, suitable for compact PCB layouts.

Feature Summary

• Provides effective electromagnetic interference suppression through three-terminal feedthrough architecture
• Qualified for automotive electronic systems under AEC-Q200 standards
• Supports high DC current loads up to 4 Amperes
• Enables space-constrained designs via low-profile 0805 surface-mount packaging

Applications

• Automotive infotainment system power filtering
• On-board charger input/output noise suppression
• Electronic control unit (ECU) power rail decoupling
• Telematics module EMI mitigation

Procurement Notes

Verify the complete part number including suffixes against official TDK documentation to ensure correct capacitance, voltage, and termination specifications. Confirm AEC-Q200 compliance requirements match your specific automotive application standards. Check for RoHS directive adherence if required by your manufacturing region. Ensure the selected tape-and-reel or cut-tape format aligns with your automated assembly equipment capabilities.

Selection Notes

Select this component when high capacitance values are required in small surface-mount packages for automotive environments. Consider the 4 A current rating and 300 mΩ resistance for power integrity analysis. Evaluate the 0805 footprint compatibility with existing PCB designs. Compare against other YFF-AC series variants if different voltage ratings or capacitance values better suit the circuit requirements.

Part Context

This component belongs to the TDK YFF-AC series of automotive-grade feedthrough capacitors. These devices integrate MLCC technology with three-terminal structures to provide superior high-frequency noise attenuation compared to standard two-terminal capacitors. The series is specifically engineered for demanding automotive electronics requiring reliable EMI performance under varying thermal conditions.

Replacement Considerations

Consult official TDK substitution guides for compatible alternatives within the YFF-AC family. Verify that any substitute maintains identical AEC-Q200 qualification and 0805 package dimensions. Ensure replacement parts support the same 4 A current handling and 10 V rating without compromising EMI suppression characteristics.