UM4401

Overview

The UM4401 is a 4-line RC EMI filter with integrated TVS protection designed for color LCD interfaces. Manufactured by Union Semiconductor International Limited, this component provides comprehensive electromagnetic interference suppression and electrostatic discharge protection for high-speed data lines. It integrates passive filtering elements with transient voltage suppression diodes to safeguard sensitive display interface circuits from noise and voltage spikes.

Feature Summary

• Integrates four independent RC filter channels with TVS protection
• Designed specifically for color LCD interface signal lines
• Provides combined EMI suppression and ESD protection capabilities

Applications

• Color LCD interface protection
• Display module signal line filtering
• EMI/RFI suppression in portable devices

Procurement Notes

Verify the specific package type and pin configuration against the official datasheet before procurement. Confirm that the component meets the required ESD protection levels for your application environment. Ensure compatibility with the target PCB footprint and soldering process specifications defined by Union Semiconductor International Limited.

Selection Notes

Select this component when designing circuits requiring simultaneous EMI filtering and ESD protection for multiple LCD data lines. Consider the parasitic capacitance of the integrated TVS diodes relative to the signal frequency requirements. Evaluate the physical size constraints of the target application against the available package options offered by the manufacturer.

Part Context

This component belongs to the family of integrated protection devices for display interfaces. It addresses the need for compact solutions that combine filtering and clamping functions in a single package. The design supports modern mobile and consumer electronics where space efficiency and signal integrity are critical for reliable LCD operation.