MI0805K400R-00

Overview

The MI0805K400R-00 is a single-line power line ferrite bead from the MI series, manufactured by Laird-Signal Integrity Products. It features a 0805 (2012 Metric) surface-mount package with dimensions of 2.00mm x 1.25mm and a maximum height of 0.043 inches (1.10mm). The component provides an impedance of 40 Ohms at 100 MHz and supports a rated current of 1.5A. Its maximum DC resistance (DCR) is specified as 50 milliohms. The device operates within a temperature range of -40°C to 125°C and is classified as obsolete.

Feature Summary

• Provides electromagnetic interference filtering for power lines
• Monolithic construction in a compact 0805 surface-mount footprint
• Designed for high-current applications up to 1.5A

Applications

• Power line noise suppression
• EMI filtering in electronic circuits

Procurement Notes

This part number is officially listed as obsolete and no longer manufactured. Verification of availability should focus on direct substitutes or surplus channels. Confirm RoHS compliance status, as older obsolete variants may not meet current environmental standards compared to active replacements like the MI0805K400R-10.

Selection Notes

Select this component for low-impedance power rail filtering where 40 Ohms attenuation at 100 MHz is required. Ensure the design accommodates the 1.5A current rating and 50mOhm DCR to minimize voltage drop. Verify that the 0805 package size fits the PCB layout constraints and that the operating temperature range meets system requirements.

Part Context

The MI0805K400R-00 belongs to the MI series of EMI filtering components. It is a legacy variant of the MI0805K400R-10, which is currently in production. Both share similar electrical characteristics but differ in packaging suffixes and potentially RoHS compliance status.

Replacement Considerations

The MI0805K400R-10 is a confirmed direct substitute available from Laird-Signal Integrity Products.