LI0603G121R-00

Chip Ferrite Bead Overview

The LI0603G121R-00 is a single-line ferrite bead chip manufactured by Laird-Signal Integrity Products, designed for power and signal line filtering. It features a 0603 (1608 metric) surface-mount package with dimensions of 1.60mm length by 0.80mm width and a maximum height of 0.031 inches (0.80mm). The component provides an impedance of 120 Ohms at 100 MHz and supports a maximum current rating of 700mA. Its DC resistance (DCR) is limited to a maximum of 200 milliohms. It operates within a temperature range of -40°C to 125°C.

Chip Ferrite Bead Feature Summary

• Provides electromagnetic interference suppression for sensitive power and signal lines through high-frequency impedance characteristics.
• Utilizes a compact 0603 surface-mount footprint to facilitate automated assembly and space-constrained board layouts.
• Engineered for stable thermal performance across industrial operating temperatures without significant parameter drift.

Chip Ferrite Bead Applications

• Filtering noise on power supply rails in portable electronic devices
• Signal integrity management in high-speed digital communication interfaces
• EMI suppression in automotive infotainment and control modules

Chip Ferrite Bead Procurement Notes

Verify the specific suffix designation during procurement, as variations such as -00 and -10 may indicate differences in packaging or tape-and-reel specifications rather than electrical performance. Confirm RoHS compliance status and ensure the selected variant matches the required manufacturing automation equipment. Cross-reference official datasheets to validate availability and lead times before finalizing component selection.

Chip Ferrite Bead Selection Notes

Select this component when a low-profile 0603 ferrite bead is required for circuits carrying up to 700mA. Ensure the target application demands approximately 120 Ohms of impedance at 100 MHz for effective noise attenuation. Verify that the PCB land pattern accommodates the 1.60mm x 0.80mm dimensions and that the thermal environment remains within the specified -40°C to 125°C operational range.

Chip Ferrite Bead Part Context

This part belongs to the Laird Signal Integrity Products ferrite bead portfolio, specifically the LI series designed for general-purpose EMI filtering. It serves as a passive component alternative to inductors in applications requiring broadband noise absorption. The 0603 form factor positions it between smaller 0402 components and larger 0805 beads, balancing current handling capabilities with board space efficiency.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include the LI0603G121R-10 variant from the same manufacturer, which shares identical electrical specifications but may differ in packaging configuration. Other compatible options require matching the 120 Ohm @ 100 MHz impedance, 700mA current rating, and 0603 package size while verifying DCR limits and thermal characteristics.