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The MI1812K121R-10 is a single-line ferrite bead chip manufactured by Laird-Signal Integrity Products. It features an 1812 (4532 Metric) surface-mount package with dimensions of 0.177 inches in length and 0.126 inches in width. The component provides an impedance of 120 Ohms at 100 MHz and supports a maximum rated current of 1.5 Amperes. Its maximum DC resistance is specified at 55 milliohms, with a maximum height of 0.063 inches. It operates within a temperature range of -40°C to +125°C.
Verify the specific suffix designation to confirm packaging configuration and compliance status. Ensure the selected variant matches the required impedance tolerance and current rating for the target application. Confirm RoHS3 compliance if environmental regulations apply. Cross-reference manufacturer part numbers with distributor codes to avoid ordering errors.
Select this component when a 120 Ohm impedance at 100 MHz is required for a single-line circuit. The 1.5A current rating suits moderate power applications. The 1812 package offers a balance between current handling capability and board space efficiency compared to smaller footprints.
This component belongs to the MI series of ferrite beads from Laird-Signal Integrity Products. The series includes various impedance values and package sizes designed for general-purpose EMI filtering. The MI series is widely used in consumer electronics and industrial equipment for signal integrity management.
Direct substitutes include other 1812 ferrite beads with similar 120 Ohm impedance and 1.5A current ratings. Verify pin compatibility and impedance characteristics before substitution.