EZA-ST22AAAJ

Overview

The Panasonic EZA-ST22AAAJ is a fourth-order low-pass RC (Pi) EMI filter designed for surface mount applications. It features four channels with a resistance of 47 ohms and capacitance of 47 pF per channel. The component operates within a voltage rating of 25V DC and supports temperatures from -25°C to +85°C. Housed in a concave 1608 (4021 metric) package measuring 4 x 2.1 x 0.65mm, it offers compact integration for high-density circuit boards.

Feature Summary

• Integrates a fourth-order low-pass RC Pi network structure for effective signal filtering
• Features a concave package design to facilitate precise placement on printed circuit boards
• Provides four independent channels for simultaneous multi-line protection

Applications

• Data line protection in mobile devices
• EMI suppression in portable electronics
• Signal integrity enhancement in communication interfaces

Procurement Notes

Verify the specific suffix AA against official Panasonic documentation to confirm tolerance and packaging details. Confirm current availability status as the part may be subject to lifecycle changes. Ensure compatibility with automated pick-and-place equipment due to the concave package geometry. Cross-reference electrical parameters with system requirements before finalizing procurement decisions.

Selection Notes

Select this component when a compact, multi-channel EMI solution is required for data lines. The 47-ohm resistance and 47-pF capacitance values are optimized for specific impedance matching and cutoff frequencies. Consider the 1608 footprint constraints and the operational temperature range of -25°C to +85°C during the design phase to ensure reliable performance under intended operating conditions.

Part Context

This component belongs to the Panasonic EZA series of RC filters, which are engineered for space-saving designs in consumer electronics. The EZA-ST variant specifically utilizes a concave package to improve solder joint reliability and placement accuracy. This series addresses the growing demand for efficient EMI suppression in increasingly miniaturized electronic devices.

Replacement Considerations

Consult official Panasonic substitution guides for verified alternatives. Generic equivalents may not replicate the precise RC Pi topology or concave package characteristics required for optimal performance in sensitive data line applications.