EXC-14CT900U

Common Mode Chokes Overview

The Panasonic EXC-14CT900U is a surface-mount common mode choke filter designed for high-speed differential data lines. It features a compact 0302 (0806 metric) package with dimensions of 0.85 mm x 0.65 mm x 0.45 mm. The component provides a common mode impedance of 90 Ω at 100 MHz with a tolerance of ±20%. It supports a maximum DC current of 130 mA and has a maximum DC resistance of 2.5 Ω per line. The device operates within a temperature range of -40°C to +85°C and complies with RoHS directives.

Common Mode Chokes Feature Summary

• Eliminates radiated noise from high-speed differential transmission signals
• Features electromagnetic shielding to prevent magnetic flux leakage
• Utilizes a robust multi-layer sintered structure for superior reflow soldering heat resistance
• Offers low DC resistance to minimize insertion loss impact on signal integrity

Common Mode Chokes Applications

• Noise suppression for USB 2.0 interfaces
• Interference mitigation for LVDS data lines
• EMI filtering in smartphones and mobile devices
• Signal protection in AV products such as LCD TVs and DVD/Blu-ray drives
• Noise control in PC peripherals including HDDs and printers

Common Mode Chokes Procurement Notes

Verify the specific suffix 'U' against official Panasonic documentation to confirm compliance status and terminal plating specifications. Ensure that the selected variant matches the required impedance tolerance and current rating for the target circuit design. Cross-reference the package dimensions with PCB footprint guidelines to guarantee accurate surface mount placement during assembly processes.

Common Mode Chokes Selection Notes

Select this component when space constraints require a 0302 footprint for common mode noise reduction. Choose based on the 90 Ω impedance requirement at 100 MHz for specific high-speed bus protocols. Consider the 130 mA current rating to ensure adequate margin for the application's operational load. Evaluate the low DC resistance characteristic to maintain signal quality in sensitive differential pairs.

Common Mode Chokes Part Context

This part belongs to the Panasonic EXC14C series of common mode chokes, which are engineered for compact electronic devices. The series includes variants with different impedance values to suit various frequency requirements. These components are integral to managing electromagnetic interference in portable electronics and consumer appliances where miniaturization and reliability are critical design factors.

Common Mode Chokes Replacement Considerations

Official substitutes within the same family include EXC14CE900U and EXC14CG900U. Verify pin compatibility and impedance tolerances before substitution. Alternative series such as EXC24CE may offer different physical dimensions or current ratings.