EZA-ST51AAAJ

Overview

The Panasonic EZA-ST51AAAJ is a surface-mount RC Pi-filter designed for EMI suppression in mobile device data lines. It features four channels with a resistance of 470 ohms and capacitance of 22 pF per channel. The component operates within a voltage rating of 25V and supports temperatures from -25°C to 85°C. Housed in a compact 1608 (4021 metric) package with dimensions of 4.00mm x 2.10mm x 0.85mm, it provides low-pass filtering characteristics suitable for high-density circuit board layouts.

Feature Summary

• Integrates four independent RC filter channels within a single compact surface-mount package
• Utilizes RC Pi-network topology to effectively suppress electromagnetic interference on signal lines
• Designed specifically for protecting data transmission lines in portable electronic equipment

Applications

• Data line protection in mobile devices
• EMI suppression for high-speed digital interfaces
• Signal integrity enhancement in compact consumer electronics

Procurement Notes

Verify the specific suffix AA against official Panasonic documentation to confirm exact electrical tolerances and material composition. Confirm availability status as this part may be subject to discontinuation notices. Ensure compatibility with existing PCB footprint specifications before finalizing procurement decisions.

Selection Notes

Select this component when space-constrained designs require multi-channel EMI filtering without increasing board area. Consider the 470-ohm resistance value for impedance matching requirements in the target data interface. Evaluate the 22pF capacitance impact on signal rise times to ensure compliance with communication protocol timing specifications.

Part Context

This component belongs to the Panasonic EZA-ST series of chip RC networks. These filters are engineered for applications requiring robust noise reduction in small form factors. The series offers various resistance and capacitance combinations to suit different frequency response needs while maintaining consistent physical dimensions for standardized manufacturing processes.

Replacement Considerations

Consult official Panasonic substitution guides for verified alternatives. Generic equivalents may not match the precise RC Pi-network topology or thermal performance characteristics required for original design specifications.