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Product Detailed Parameters
- Description：FERRITE BEAD 250 OHM 2220 1LN
- Series：WE-MPSA
- Mfr：Würth Elektronik
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Power Line
- Number of Lines：1
- Impedance @ Frequency：250 Ohms @ 10 MHz
- Current Rating (Max)：4A
- DC Resistance (DCR) (Max)：12mOhm
- Ratings：AEC-Q200
- Operating Temperature：-55°C ~ 125°C
- Package / Case：2220 (5750 Metric)
- Mounting Type：Surface Mount
- Height (Max)：0.081" (2.05mm)
- Size / Dimension：0.220" L x 0.200" W (5.59mm x 5.08mm)
- Features：-
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Overview
The Würth Elektronik part number 78279224251 is a surface-mount ferrite bead belonging to the WE-MPSA series. It features a 2220 [5550 Metric] package and provides an impedance of 250 ohms at its rated frequency. The component supports a DC current rating of 4 A with a low DC resistance of 0.012 ohms. It is certified to the AEC-Q200 standard, indicating suitability for automotive applications. The impedance tolerance is specified as ± 25%. The operating temperature range extends from -55°C to +125°C.
Feature Summary
- Complies with AEC-Q200 qualification standards for automotive reliability
- Designed for high-current suppression with a 4 A DC current rating
- Utilizes a compact 2220 surface-mount footprint for space-constrained layouts
Applications
- Automotive electronic circuits requiring AEC-Q200 compliance
- High-current power line noise suppression
- Signal integrity protection in dense PCB designs
Procurement Notes
Verify the specific datasheet version when ordering, as manufacturing updates may occur. Confirm that the 2220 package dimensions align with your PCB footprint library. Ensure the 4 A current rating meets your circuit's maximum load requirements. Check for any specific tape and reel packaging preferences if applicable to your assembly process.
Selection Notes
Select this component when automotive-grade certification is mandatory for the application. The 250-ohm impedance value should be matched against the target noise frequency spectrum. Consider the 0.012-ohm DC resistance impact on voltage drop within the power path. The wide operating temperature range supports harsh environmental conditions without derating concerns.
Part Context
This ferrite bead is part of the WE-MPSA series, which focuses on multi-layer chip ferrite beads for high-performance filtering. The series targets applications demanding robust electromagnetic interference suppression in both industrial and automotive sectors. The 2220 case size offers a balance between physical footprint and current handling capability compared to smaller packages.
Replacement Considerations
No public substitute part numbers are confirmed in the provided documentation. Cross-referencing requires matching the 250-ohm impedance, 4 A current rating, 2220 package, and AEC-Q200 certification simultaneously.
