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Product Detailed Parameters
- Description：CMC 51UH 1A 2LN 5.5 KOHM SMD
- Series：WE-SL2
- Mfr：Würth Elektronik
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Power, Signal Line
- Number of Lines：2
- Current Rating (Max)：1A
- DC Resistance (DCR) (Max)：160mOhm
- Voltage Rating - DC：80V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.362" L x 0.236" W (9.20mm x 6.00mm)
- Height (Max)：0.209" (5.30mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：51 µH @ 1 kHz
- Impedance @ Frequency：5.5 kOhms @ 30 MHz
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 744227S is a WE-SL2 series surface-mount common mode line filter designed for high-current applications. It features an inductance of 51 µH with a tolerance of ±30% and offers an impedance of 5.5 kΩ at 1 kHz. The component supports a maximum DC current of 1 A and has a maximum DC resistance of 0.16 Ω. Rated for voltages up to 80 V, it operates within a temperature range of -40 °C to +125 °C. The physical dimensions are 9.2 mm in length, 6 mm in width, and 5 mm in height.
Feature Summary
- Utilizes sectional winding technology to achieve wide bandwidth performance.
- Constructed with UL-compliant housing materials for enhanced safety compliance.
- Designed for surface-mount PCB integration to optimize space efficiency.
Applications
- Data line filtering in automotive electronic systems
- Common mode noise suppression in industrial communication interfaces
- EMI reduction in power supply input stages
Procurement Notes
Verify the specific suffix designation against official Wurth Elektronik documentation to confirm exact electrical tolerances and packaging configurations. Ensure that the selected variant meets the required AEC-Q200 qualification standards if intended for automotive deployment. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before procurement.
Selection Notes
Select this component when designing circuits requiring robust common mode noise attenuation for high-current data lines. The 1 A current rating and low DC resistance make it suitable for applications where signal integrity must be maintained under significant load conditions. Consider the 9.2 mm footprint during PCB layout planning to ensure adequate clearance and thermal management.
Part Context
This component belongs to the WE-SL2 series of common mode chokes from Würth Elektronik. The series is characterized by its sectional winding architecture, which distinguishes it from traditional toroidal or bobbin-wound designs. This structural approach allows for optimized magnetic coupling and reduced parasitic capacitance, enhancing high-frequency performance.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Direct replacement requires matching the 51 µH inductance, 1 A current rating, and 9.2 x 6 x 5 mm package dimensions precisely.
