LI0805H121R-10

Chip Ferrite Bead Overview

The LI0805H121R-10 is a single-line ferrite bead from the Laird LI series, designed for EMI filtering in power and signal lines. It features a 0805 (2012 metric) surface-mount package with dimensions of 2.00mm x 1.25mm x 1.10mm max height. The component provides an impedance of 120 Ohms at 100 MHz and has a maximum DC resistance of 150 mOhm. It supports a rated current of 1A and operates within a temperature range of -40°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides effective electromagnetic interference suppression for high-frequency noise on power and signal traces.
• Utilizes a compact monolithic ceramic construction suitable for dense surface-mount layouts.
• Engineered for stable performance across a wide industrial temperature range.

Chip Ferrite Bead Applications

• Power supply input filtering
• High-speed digital signal line termination
• RF circuit noise suppression

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official datasheets to confirm exact electrical tolerances and packaging specifications. Confirm availability status as product lifecycle stages may affect long-term sourcing. Ensure compatibility with existing PCB footprint and reflow soldering profiles during integration planning.

Chip Ferrite Bead Selection Notes

Select this component when a 120 Ohm impedance at 100 MHz is required for noise attenuation in space-constrained designs. The 1A current rating suits moderate power applications, while the low DCR minimizes voltage drop. Consider the 0805 package size for standard SMT assembly processes requiring reliable thermal stability.

Chip Ferrite Bead Part Context

This part belongs to the Laird LI series of EMI filtering components, which are widely used in consumer electronics and industrial equipment. The series offers various impedance values and current ratings within standardized footprints, allowing designers to customize filtering characteristics without altering board layout dimensions significantly.

Chip Ferrite Bead Replacement Considerations

Check for direct substitutes such as the LI0805H121R-00 variant, ensuring impedance and current ratings match. Verify that any alternative maintains the same 0805 footprint and thermal characteristics to avoid redesign efforts.