EZA-ST63AAAJ

Overview

The Panasonic EZA-ST63AAAJ is a surface-mount RC (Pi) EMI filter designed for high-density applications. It features four channels with a resistance of 1 kΩ and capacitance of 100 pF per channel. The component operates within a voltage rating of 25 V DC and supports a temperature range of -25°C to 85°C. Housed in a 1608 (4021 Metric) concave package measuring 4.00 mm x 2.10 mm, it provides fourth-order low-pass filtering characteristics.

Feature Summary

• Integrates four independent signal paths within a single compact footprint
• Utilizes RC Pi topology for effective electromagnetic interference suppression
• Features a concave package design optimized for automated surface mount assembly

Applications

• Data line protection in mobile devices
• High-speed interface filtering in consumer electronics
• Signal integrity enhancement in portable communication equipment

Procurement Notes

Verify current lifecycle status as the part may be obsolete or discontinued. Confirm availability through authorized distributors only. Ensure compatibility with existing PCB footprints and reflow soldering profiles. Check for RoHS compliance documentation if required by specific regulatory standards. Validate substitute components if primary sourcing is unavailable.

Selection Notes

Select this component when space constraints require multi-channel filtering in a minimal area. The 1 kΩ resistance value suits moderate impedance matching requirements. The 100 pF capacitance offers balanced attenuation for specific frequency ranges. Consider the 25 V rating against system operating voltages. Evaluate thermal performance within the specified -25°C to 85°C operational window.

Part Context

Part of the Panasonic EZA-ST series, which specializes in compact EMI/RFI filters for portable electronics. This series addresses the industry demand for miniaturized signal conditioning components that maintain performance in tight spatial layouts typical of modern handheld devices.

Replacement Considerations

Public confirmed substitute part numbers include PST63TR and PST63CT-NDR. Verify electrical equivalence and mechanical fit before substitution.