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CMA0805A121R-1A is listed in the Common Mode Chokes range at ChipApex. The manufacturer field lists Laird-Signal Integrity Products. Its product description is CMC 370MA 2LN 120OHM SMD AECQ200. Review the specifications below when checking this part for your BOM.
Common Mode Chokes specifications for CMA0805A121R-1A
- Description：CMC 370MA 2LN 120OHM SMD AECQ200
- Series：CMA0805
- Mfr：Laird-Signal Integrity Products
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：370mA
- DC Resistance (DCR) (Max)：220mOhm
- Voltage Rating - DC：50V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 125°C
- Ratings：AEC-Q200
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.079" L x 0.047" W (2.00mm x 1.20mm)
- Height (Max)：0.055" (1.40mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：-
- Impedance @ Frequency：120 Ohms @ 100 MHz
- Qualification：-
- Grade：-
Common Mode Chokes datasheet and documents for CMA0805A121R-1A
Common Mode Chokes Overview
The CMA0805A121R-1A is a surface-mount common mode choke from the Laird CMA0805 series, designed for signal line EMI suppression. It features a two-line configuration with an impedance of 120 Ohms at 100 MHz and a maximum DC resistance of 220 mOhms. The component supports a rated current of 370 mA and operates within a temperature range of -40°C to +125°C. Housed in a compact 0805 (2012 metric) package measuring 2.0 mm x 1.25 mm x 1.40 mm, it is AEC-Q200 qualified for automotive applications.
Common Mode Chokes Feature Summary
- Provides effective common mode noise attenuation for high-speed signal lines through dual-channel ferrite construction.
- Meets AEC-Q200 automotive qualification standards for reliability in demanding environments.
- Utilizes a shielded design to minimize electromagnetic interference coupling.
Common Mode Chokes Applications
- Automotive infotainment system data buses
- High-speed USB interface filtering
- HDMI signal line protection
Common Mode Chokes Procurement Notes
Verify the specific suffix '1A' against official datasheets to confirm RoHS compliance status and packaging type, as variations exist within the CMA0805 family. Confirm that the 370mA rating aligns with your circuit requirements. Ensure the supplier provides traceability documentation required for automotive-grade components.
Common Mode Chokes Selection Notes
Select this component when dual-line signal integrity is critical and space is constrained by the 0805 footprint. Compare the 120 Ohm impedance against target noise frequencies to ensure adequate attenuation. Verify that the 370mA current rating exceeds the peak operating current of the protected lines to prevent saturation.
Common Mode Chokes Part Context
This part belongs to Laird's CMA0805 series of automotive-grade common mode chokes. It complements other variants like the CMA0805A201R-1A and CMA0805A681R-1A, offering different impedance and current ratings within the same standardized package dimensions for flexible design integration.
Common Mode Chokes Replacement Considerations
Direct substitutes include CMA0805A201R-1A and CMA0805A681R-1A from the same manufacturer. These alternatives share identical physical dimensions and automotive qualifications but differ in impedance and current handling capabilities.
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