LCFE201202A121TG

Common Mode Chokes Overview

The LCFE201202A121TG is a surface-mount common mode choke from Littelfuse, designed for high-frequency noise suppression. It features an inductance of 120 Ohms at 100MHz with a tolerance of 25%. The component supports a DC current rating of 100mA and exhibits a DC resistance of 4 Ohms. Packaged in a compact 0805 (2mm x 1.2mm) footprint with a height of 850μm, it provides effective common mode noise attenuation exceeding -24 dB in the GHz range. This filter ensures signal integrity in data lines while maintaining a low profile suitable for space-constrained applications.

Common Mode Chokes Feature Summary

• Effective suppression of common mode noise with high insertion loss in the GHz frequency range
• High differential mode cut-off frequency up to 4.22 GHz
• Thin profile design suitable for space-constrained surface mount applications
• Rated for high-temperature soldering processes

Common Mode Chokes Applications

• Data line filtering in portable electronic devices
• Noise suppression for USB and high-speed interface circuits
• Signal integrity enhancement in mobile communication modules
• EMI reduction in consumer electronics with limited PCB space

Common Mode Chokes Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure the correct impedance and tolerance specifications are selected. Confirm that the surface mount package dimensions align with the target PCB layout constraints. Ensure that the thermal management requirements for the soldering process meet the specified high-temperature ratings provided in the datasheet to maintain component reliability during assembly.

Common Mode Chokes Selection Notes

Select this component when designing circuits requiring common mode noise filtering for high-speed data lines within tight spatial limitations. The 0805 package size offers a balance between performance and board area efficiency. Consider the 100mA current rating to ensure it meets the operational requirements of the protected circuit without saturation. Evaluate the insertion loss characteristics to confirm adequate attenuation for the specific noise frequencies present in the application environment.

Common Mode Chokes Part Context

This part belongs to the LCFE2012 series of common mode chokes from Littelfuse, which are engineered for surface mount technology. The series is characterized by its thin profile and high-frequency performance, making it suitable for modern electronics where space is at a premium. These components are designed to provide reliable noise suppression without significantly impacting the differential signal transmission, ensuring compliance with electromagnetic interference standards in compact device designs.

Common Mode Chokes Replacement Considerations

Consult Littelfuse's official cross-reference tools or distributor databases for verified substitute part numbers. Ensure any replacement matches the 120 Ohm impedance, 100mA current rating, and 0805 package dimensions. Verify that alternative components offer comparable high-frequency attenuation characteristics and thermal stability to maintain system performance and reliability.