CMA0805A900R-1A

Common Mode Chokes Overview

The CMA0805A900R-1A is a two-line common mode choke manufactured by Laird-Signal Integrity Products. It features a surface mount design in an 0805 (2012 metric) package with dimensions of 2.00mm x 1.25mm and a maximum height of 1.2mm. The component provides an impedance of 90 Ohms at 100 MHz and supports a maximum DC current of 400mA. Its maximum DC resistance (DCR) is 190 milliohms. It operates within a temperature range of -40°C to +125°C and holds AEC-Q200 qualification for automotive applications.

Common Mode Chokes Feature Summary

• Dual-channel construction designed for effective common mode noise suppression on signal lines
• Automotive-grade reliability certified under the AEC-Q200 standard
• Compact surface mount footprint suitable for space-constrained PCB layouts

Common Mode Chokes Applications

• Automotive electronic systems requiring EMI filtering
• High-speed data bus protection circuits
• Signal line interference suppression in compact devices

Common Mode Chokes Procurement Notes

Verify the specific suffix and manufacturing date code upon ordering, as component revisions may occur. Confirm that the AEC-Q200 qualification status remains valid for your specific supply chain requirements. Ensure compatibility with your assembly process regarding the surface mount package type and thermal specifications during procurement planning.

Common Mode Chokes Selection Notes

Select this component when dual-line common mode filtering is required in a minimal 0805 footprint. The 90 Ohm impedance rating targets specific frequency ranges for noise attenuation. Consider the 400mA current limit and low DCR for power integrity in sensitive signal paths. Verify that the operating temperature range meets the environmental conditions of the final application.

Common Mode Chokes Part Context

This part belongs to the CMA0805 series of common mode chokes from Laird-Signal Integrity Products. The series focuses on providing EMI suppression for high-density electronics. Similar parts in the lineup include variants with different impedance values such as the CMA0805A681R-1A and CMA0805A201R-1A, offering flexibility for various filtering needs within the same physical form factor.

Common Mode Chokes Replacement Considerations

Direct substitutes within the same series include CMA0805A681R-1A and CMA0805A201R-1A. These alternatives share the same package and automotive qualification but differ in impedance ratings. Ensure the replacement's impedance curve matches the target noise frequencies before implementation.