EZA-DT21AAAJ

Overview

The Panasonic EZA-DT21AAAJ is a first-order low-pass RC Pi network EMI filter designed for surface mount applications. It integrates four channels, each comprising a 47-ohm resistor and a 22-pF capacitor. The component operates within a voltage rating of 12V DC and functions across a temperature range of -25°C to +85°C. Housed in a compact 1206 (3216 metric) package with dimensions of 3.20mm x 1.60mm x 0.85mm, it features long-side terminals on a concave body. This configuration provides effective signal line filtering while maintaining a low profile suitable for dense circuit board layouts.

Feature Summary

• Integrates four independent low-pass filter channels within a single compact surface-mount package
• Utilizes RC Pi network topology to attenuate electromagnetic interference on data lines
• Features a concave body design with long-side terminals for optimized footprint utilization

Applications

• Data line filtering in mobile devices
• EMI suppression in portable electronic equipment
• Signal integrity protection in high-density circuit boards

Procurement Notes

Verify current availability status as the EZA-DT21AAAJ is listed as discontinued by Panasonic Industry due to declining market demand. Confirm end-of-life documentation and lead times with authorized distributors before finalizing procurement plans. Ensure alternative sourcing strategies are prepared given the part's obsolete status.

Selection Notes

Select this component for designs requiring multi-channel EMI filtering in space-constrained mobile applications. The 1206 package size offers a balance between thermal performance and footprint efficiency. Consider the 12V rating when designing circuits with higher voltage swings. Verify compatibility with automated assembly processes due to the specific terminal orientation and package geometry.

Part Context

This component belongs to the Panasonic EZA-DT series of chip RC networks. These parts are engineered specifically for EMI/RFI suppression in consumer electronics. The DT series variant typically utilizes a Pi-filter structure for enhanced attenuation characteristics compared to standard RC ladders.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the part is discontinued, engineers must identify equivalent components based on matching electrical parameters (47Ω/22pF, 4-channel, 1206 package) and mechanical constraints from other manufacturers.