LCFA121002A900TG

Common Mode Chokes Overview

The LCFA121002A900TG is a surface-mount common mode noise filter from the Littelfuse LCFA series, designed for data line protection. It features two lines with a rated current of 100 mA and an output impedance of 90 Ohms. The component has a maximum DC resistance of 4 Ohms and operates within a temperature range of -40 °C to 125 °C. Packaged in a compact 1210 (3225 Metric) footprint measuring 1.27 mm in length, 1 mm in width, and 0.6 mm in height, it meets AEC-Q200 standards for automotive reliability.

Common Mode Chokes Feature Summary

• Provides high insertion loss exceeding -22 dB for common mode noise attenuation in the GHz range
• Maintains high differential signal integrity while suppressing electromagnetic interference
• Offers electrostatic discharge protection capabilities
• Designed for invisible operation without interfering with required signal transmission

Common Mode Chokes Applications

• Automotive infotainment systems including displays, navigation, and audio hosts
• Advanced Driver Assistance Systems (ADAS) camera interfaces
• Telematics control units and eCall systems
• RGB and LVDS display lines
• Smart keyless entry systems

Common Mode Chokes Procurement Notes

Verify the complete part number LCFA121002A900TG against official Littelfuse documentation to confirm specifications. Ensure compatibility with AEC-Q200 automotive qualification requirements if used in vehicle electronics. Check package dimensions and terminal configuration against design constraints. Confirm operating temperature range suitability for the intended environment. Validate that the 100 mA rating meets circuit current demands.

Common Mode Chokes Selection Notes

Select this component for applications requiring compact common mode filtering with minimal signal distortion. The 1210 package size suits space-constrained designs. Consider the 90 Ohm impedance match for specific transmission lines. Evaluate the 100 mA current rating against peak load conditions. Verify thermal performance within the specified -40 °C to 125 °C range for harsh environments.

Common Mode Chokes Part Context

This device belongs to the LCFA series of common mode chokes manufactured by Littelfuse. The series is engineered for high-frequency noise suppression in digital data lines. These components are specifically optimized for automotive electronics, offering robust protection against EMI and ESD while maintaining signal fidelity in high-speed communication interfaces.

Common Mode Chokes Replacement Considerations

Consult Littelfuse official documentation for verified substitute part numbers within the LCFA series or equivalent product lines. Ensure any replacement matches the 1210 package dimensions, 90 Ohm impedance, and 100 mA current rating. Verify AEC-Q200 compliance if automotive application requires it. Do not assume functional equivalence based on similar naming conventions alone.