ECMF04-4AMX12

Common Mode Chokes Overview

The ECMF04-4AMX12 is a highly integrated common mode filter manufactured by STMicroelectronics, designed to suppress EMI/RFI noise on high-speed differential serial buses. It supports two differential lanes and features an integrated ESD protection mechanism compliant with IEC61000-4-2 Level 4 standards. The device offers a very large differential bandwidth exceeding 6 GHz and provides significant common-mode attenuation, specifically -34 dB at 900 MHz and -20 dB between 800 MHz and 2.2 GHz. It operates within a temperature range of -40°C to +85°C and utilizes a µQFN-12L package measuring 1.35 x 2.60 mm with a maximum height of 0.55 mm.

Common Mode Chokes Feature Summary

• Integrated ESD protection meeting IEC61000-4-2 Level 4 requirements
• Very large differential bandwidth exceeding 6 GHz for high-speed data integrity
• High common-mode attenuation across critical frequency ranges
• Compact surface-mount design minimizing PCB space consumption

Common Mode Chokes Applications

• HDMI interfaces
• MIPI D-PHY connections
• USB 2.0 high-speed links
• MDDI applications

Common Mode Chokes Procurement Notes

Verify the specific ordering suffix and package variant against official STMicroelectronics documentation before procurement. Confirm that the component meets the required electromagnetic compatibility standards for your specific application environment. Ensure compatibility with automated surface-mount assembly processes given the small form factor. Cross-reference the part number with authorized distributors to avoid counterfeit components.

Common Mode Chokes Selection Notes

Select this component when protecting two differential signal lanes requiring integrated ESD suppression and high-frequency filtering. It is suitable for designs where board space is limited due to its thin profile and small footprint. Consider this filter for applications involving HDMI, MIPI, or USB 2.0 interfaces that demand robust noise immunity without adding discrete protection components.

Common Mode Chokes Part Context

This component belongs to STMicroelectronics' ECMF series of common mode filters, which are engineered for high-speed digital interfaces. The series includes variants like the ECMF02-2AMX6 for single-lane protection. These devices integrate filtering and ESD protection to simplify circuit design and reduce overall system cost while maintaining signal integrity in noisy environments.

Common Mode Chokes Replacement Considerations

The ECMF02-2AMX6 serves as a related variant within the same family but supports only one differential lane instead of two. Verify pinout compatibility and electrical specifications if substituting with other common mode filters from different manufacturers.