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Product Detailed Parameters
- Description：FERRITE BEAD 120 OHM 0402 1LN
- Series：WE-CBA
- Mfr：Würth Elektronik
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：1
- Impedance @ Frequency：120 Ohms @ 100 MHz
- Current Rating (Max)：500mA
- DC Resistance (DCR) (Max)：200mOhm
- Ratings：AEC-Q200
- 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 782422121 is a surface-mount EMI suppression ferrite bead from the WE-CBA series. It features an impedance of 100 ohms at standard test frequencies and supports a maximum DC current of 500 mA. The component has a maximum DC resistance of 300 milliohms and operates within a temperature range of -55°C to +125°C. Its physical dimensions are 1 mm in length, 0.5 mm in width, and 0.5 mm in height. The part is AEC-Q200 qualified for automotive applications.
Feature Summary
- Provides electromagnetic interference (EMI) suppression through high-impedance characteristics.
- Designed for surface-mount technology (SMT) integration on printed circuit boards.
- Qualified under AEC-Q200 standards for automotive reliability requirements.
Applications
- Automotive electronic circuits requiring EMI filtering
- General-purpose signal line noise suppression
- Power supply output filtering
Procurement Notes
Verify the specific datasheet version and manufacturer documentation to confirm electrical parameters and mechanical tolerances. Ensure compatibility with automated pick-and-place equipment due to the small 0402 package size. Check for RoHS compliance status and lead time constraints directly with authorized distributors before finalizing procurement plans.
Selection Notes
Select this component when space-constrained designs require effective high-frequency noise attenuation. The 500 mA current rating suits low-power signal lines or auxiliary power rails. Consider the 300 milliohm DC resistance impact on voltage drop if used in sensitive power paths. Verify thermal performance within the specified operating temperature range during system integration.
Part Context
This ferrite bead belongs to the WE-CBA series, which focuses on compact EMI suppression solutions. The series offers various impedance values and current ratings tailored for different filtering needs. The 782422121 variant specifically targets applications needing moderate impedance with a small footprint, balancing performance and board space efficiency.
Replacement Considerations
Cross-reference with other 0402 ferrite beads offering similar 100-ohm impedance and 500 mA ratings. Ensure substitute parts match the AEC-Q200 qualification if automotive use is required. Verify that alternative components maintain comparable DC resistance and physical dimensions for direct replacement.
FAQ
What is the maximum DC current rating for the 782422121?
The maximum DC current rating is 500 mA.
Is the 782422121 suitable for automotive applications?
Yes, it is AEC-Q200 qualified, making it suitable for automotive electronics.
What is the package size of this ferrite bead?
It uses a 0402 (1005 metric) surface-mount package with dimensions of 1 mm x 0.5 mm x 0.5 mm.
