ECMF02-3F3

Common Mode Chokes Overview

The ECMF02-3F3 is a surface-mount common mode filter from STMicroelectronics, designed for high-speed differential serial buses. It integrates ESD protection and filtering in a micro-QFN package. Key electrical parameters include a DC resistance (DCR) of 4.5 Ohms and operation up to 7 GHz differential bandwidth. It provides common mode attenuation between 800 MHz and 5 GHz. The device meets IEC 61000-4-2 Level 4 ESD standards, offering robust protection against air and contact discharge with low peak clamping voltage.

Common Mode Chokes Feature Summary

• Integrates high-efficiency ESD protection with common mode filtering for high-speed data links
• Provides ultra-wide differential bandwidth up to 7 GHz
• Delivers strong ESD protection meeting IEC 61000-4-2 Level 4 standards
• Features a compact micro-QFN footprint for simple layout

Common Mode Chokes Applications

• Smartphones and tablets
• USB-C and USB 3.1 interfaces
• MIPI D-PHY (DSI & CSI) connections
• HDMI 2.0 applications

Common Mode Chokes Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm the specific suffix '3F3' matches design requirements, as it denotes tape-and-reel packaging. Check current lifecycle status, as some sources indicate potential obsolescence. Ensure ESD handling precautions are followed during assembly due to the sensitive integrated protection circuitry.

Common Mode Chokes Selection Notes

Select this component when designing circuits requiring combined ESD protection and noise suppression for differential pairs. It is suitable for interfaces like MIPI, USB 3.1, and HDMI where signal integrity at high frequencies is critical. Consider the 4.5 Ohm DCR impact on power delivery if applicable. Verify compatibility with the target PCB footprint and reflow soldering profiles specified in the datasheet.

Common Mode Chokes Part Context

This part belongs to the ECMF series of silicon common mode filters. These devices are engineered to reduce component count by combining filtering and protection functions. They are widely used in portable electronics and IoT devices to enhance immunity to electromagnetic interference and electrostatic discharge events while maintaining high-speed data transmission performance.

Common Mode Chokes Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative ECMF series variants based on pin compatibility and electrical specifications. Consult official STMicroelectronics resources for updated replacement recommendations.