LLMCC201208T420RG

Chip Ferrite Bead Overview

The LLMCC201208T420RG is a single-element, shielded ferrite chip bead manufactured by Taiyo Yuden in the 0805 (2012 metric) surface-mount package. It exhibits an impedance of 42 Ohms at a test frequency of 100 MHz with a tolerance of 25 percent. The component supports a maximum DC current of 4 Amperes and maintains a maximum DC resistance of 8 milliohms. It operates within a temperature range from -40 degrees Celsius to +125 degrees Celsius.

Chip Ferrite Bead Feature Summary

• Provides electromagnetic interference suppression through high-current power line filtering capabilities.
• Features a shielded construction to contain magnetic fields and minimize external noise coupling.

Chip Ferrite Bead Applications

• Power line filtering in portable electronic devices
• Noise suppression for high-current digital circuits
• EMI mitigation in automotive electronics

Chip Ferrite Bead Procurement Notes

Verify the specific impedance tolerance and DC current ratings against the official datasheet before integration. Confirm that the 0805 footprint matches the target PCB layout requirements. Ensure the operating temperature range aligns with the environmental conditions of the final assembly to guarantee long-term reliability.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring significant current handling alongside effective high-frequency noise attenuation. The 4 Ampere rating makes it suitable for power rails where standard beads would saturate. Evaluate the 8 milliohm DC resistance impact on voltage drop to ensure system efficiency remains within acceptable limits.

Chip Ferrite Bead Part Context

This part belongs to the LLMCC series of high-current ferrite beads designed for robust power management applications. It serves as a specialized passive component for suppressing electromagnetic interference in compact electronic systems. The product represents Taiyo Yuden's focus on miniaturized solutions that maintain performance under high electrical loads.

Chip Ferrite Bead Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.