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Product Detailed Parameters
- Description：FERRITE BEAD 1 KOHM 0805 1LN
- Series：WE-CBF
- Mfr：Würth Elektronik
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：1
- Impedance @ Frequency：1 kOhms @ 100 MHz
- Current Rating (Max)：200mA
- DC Resistance (DCR) (Max)：450mOhm
- Ratings：-
- Operating Temperature：-55°C ~ 125°C
- Package / Case：0805 (2012 Metric)
- Mounting Type：Surface Mount
- Height (Max)：0.043" (1.10mm)
- Size / Dimension：0.079" L x 0.047" W (2.00mm x 1.20mm)
- Features：-
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Overview
The Würth Elektronik 74279205 is a WE-CBF series SMD EMI suppression ferrite bead in an 0805 (2012 metric) package. It features a multilayer structure with a ferrite core and offers 1 kΩ impedance at 100 MHz. The component supports a maximum DC current of 200 mA and has a maximum DC resistance of 450 mΩ. It operates within a temperature range of -55°C to +125°C, measures 2 mm x 1.2 mm x 0.9 mm, and carries AEC-Q200 qualification.
Feature Summary
- Provides effective electromagnetic interference suppression through high impedance characteristics at target frequencies.
- Features a shielded multilayer construction that minimizes external magnetic field radiation.
- Designed for direct surface mount integration onto printed circuit boards.
Applications
- High-speed data line filtering
- Clock signal noise suppression
- Power supply input/output decoupling
Procurement Notes
Verify the specific part number against official Wurth Elektronik documentation to confirm impedance values and tolerance ratings. Ensure the selected variant meets the required AEC-Q200 automotive qualification standards if applicable to the design. Cross-reference datasheet parameters with system requirements before finalizing procurement decisions.
Selection Notes
Select this component when space-constrained designs require effective EMI filtering in an 0805 footprint. Consider the 200 mA current rating and 450 mΩ DC resistance for power integrity analysis. Evaluate the 1 kΩ impedance profile against the specific noise frequencies present in the application circuit to ensure adequate attenuation performance.
Part Context
This component belongs to the WE-CBF series of surface-mount ferrite beads manufactured by Würth Elektronik. The series utilizes multilayer technology to provide compact EMI suppression solutions suitable for modern electronic assemblies requiring reliable noise reduction in limited board real estate.
Replacement Considerations
Consult official manufacturer substitution guides for verified alternatives. Do not assume functional equivalence based solely on package dimensions or nominal impedance values without confirming detailed electrical specifications and thermal characteristics.
FAQ
What is the impedance value of the 74279205 at 100 MHz?
The impedance is 1 kΩ at 100 MHz.
Is the 74279205 qualified for automotive applications?
Yes, the component is AEC-Q200 qualified.
