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Product Detailed Parameters
- Description：CMC 400MA 2LN 120 OHM SMD
- Series：CF0805
- Mfr：Laird-Signal Integrity Products
- Package：Tape & Reel (TR)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：400mA
- DC Resistance (DCR) (Max)：400mOhm
- Voltage Rating - DC：-
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.079" L x 0.049" W (2.00mm x 1.25mm)
- Height (Max)：0.039" (1.00mm)
- Package / Case：0805 (2012 Metric)
- Inductance @ Frequency：-
- Impedance @ Frequency：120 Ohms @ 100 MHz
- Qualification：-
- Grade：-
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Overview
The CF0805D121R-10 is a two-line common mode choke manufactured by Laird-Signal Integrity Products. It features a surface mount 0805 (2012 metric) package with dimensions of 0.079 inches in length and 0.049 inches in width. The component provides an impedance of 120 Ohms at 100 MHz and supports a maximum rated current of 400 mA. Its maximum DC resistance (DCR) is specified at 400 milliohms, ensuring low insertion loss for power and signal lines.
Feature Summary
- Dual-line configuration designed for common mode noise suppression
- Compact 0805 surface mount footprint for space-constrained layouts
- Low DC resistance to minimize voltage drop in power circuits
Applications
- Power supply input filtering
- Signal line noise suppression
- Portable electronic device protection
Procurement Notes
Verify the specific manufacturer datasheet for detailed electrical characteristics and mechanical drawings before integration. Confirm that the 0805 package dimensions align with your PCB land pattern requirements. Ensure the 400 mA current rating meets the operational demands of your target circuit to prevent saturation or excessive heating during normal use.
Selection Notes
Select this component when dual-channel common mode attenuation is required within a standard 0805 envelope. The 120 Ohm impedance at 100 MHz targets high-frequency interference typical in digital systems. Verify that the 400 mA current handling capability is sufficient for the specific power rails being filtered to maintain performance integrity under load.
Part Context
This part belongs to Laird-Signal Integrity Products' lineup of passive EMI filters. It serves as a compact solution for mitigating electromagnetic interference in dense circuit boards. The design focuses on providing effective noise reduction without occupying significant board area, making it suitable for modern miniaturized electronics requiring robust signal integrity management.
Replacement Considerations
Consult official distributor databases for verified cross-reference part numbers from Laird or other manufacturers. Ensure any substitute maintains identical dual-line topology, 0805 package size, and equivalent impedance and current ratings to guarantee functional compatibility.
