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Product Detailed Parameters
- Description：FERRITE BEAD 100 OHM 0402 1LN
- Series：WE-CBF
- Mfr：Würth Elektronik
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：1
- Impedance @ Frequency：100 Ohms @ 100 MHz
- Current Rating (Max)：1.2A
- DC Resistance (DCR) (Max)：90mOhm
- Ratings：-
- Operating Temperature：-55°C ~ 125°C
- Package / Case：0402 (1005 Metric)
- Mounting Type：Surface Mount
- Height (Max)：0.022" (0.55mm)
- Size / Dimension：0.039" L x 0.020" W (1.00mm x 0.50mm)
- Features：-
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Overview
The Würth Elektronik 742792731 is a surface-mount EMI suppression ferrite bead from the WE-CBF series, housed in a compact 0402 (1005 metric) package. It provides an impedance of 100 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 1200 mA. The component features a maximum DC resistance of 90 mOhms and operates within a temperature range of -55°C to +125°C. It is qualified under AEC-Q200 standards for automotive reliability.
Feature Summary
- Provides effective electromagnetic interference suppression through high impedance characteristics at target frequencies.
- Designed for direct surface mounting on printed circuit boards with low profile dimensions.
- Offers low DC resistance to minimize signal loss and power dissipation in the circuit path.
Applications
- Automotive electronic systems requiring AEC-Q200 qualified components
- High-speed digital signal line filtering
- Power supply output noise suppression
Procurement Notes
Verify the specific impedance value and current rating against the official datasheet before integration, as variations exist within the WE-CBF family. Confirm that the 0402 package dimensions align with the PCB footprint design. Ensure the operating temperature range meets the environmental requirements of the final assembly. Check for any recent product change notices regarding manufacturing updates.
Selection Notes
Select this component when space constraints require a 0402 footprint but higher current handling than standard beads allows. The 100 Ohm impedance at 100 MHz targets common noise frequencies in digital circuits. Consider the low DC resistance for efficiency in power lines. Verify compatibility with reflow soldering profiles specified in the datasheet to ensure joint integrity.
Part Context
This part belongs to the WE-CBF series of multilayer SMD ferrites manufactured by Würth Elektronik. These components are engineered for compact designs where space is limited. The series includes various impedance and current ratings across different package sizes. The 742792731 specifically addresses needs for moderate impedance with high current capacity in small form factors.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Consult manufacturer resources for cross-reference data if alternative sourcing is required.
FAQ
What is the maximum DC current rating for the 742792731?
The maximum DC current rating is 1200 mA.
Is this component suitable for automotive applications?
Yes, it is qualified under the AEC-Q200 standard for automotive use.
What is the impedance value at the test frequency?
The impedance is 100 Ohms at a test frequency of 100 MHz.
