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Product Detailed Parameters
- Description：CMC 250UH 2A 2LN 970 OHM SMD
- Series：WE-SL5
- Mfr：Würth Elektronik
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Power, Signal Line
- Number of Lines：2
- Current Rating (Max)：2A
- DC Resistance (DCR) (Max)：35mOhm
- Voltage Rating - DC：80V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.394" L x 0.343" W (10.00mm x 8.70mm)
- Height (Max)：0.256" (6.50mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：250 µH @ 100 kHz
- Impedance @ Frequency：970 Ohms @ 15 MHz
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 744272251 is a surface-mount common mode choke from the WE-SL5 series, designed for power and signal line filtering. It features an inductance of 250 µH at 100 kHz and provides an impedance of 970 Ohms at 15 MHz. Rated for a maximum DC current of 2A with a maximum DC resistance of 35 mΩ, it supports a DC voltage rating of 80V. The component operates within a temperature range of -40°C to 125°C and utilizes a sectional winding structure.
Feature Summary
- Utilizes sectional winding technology for high-current handling capabilities
- Designed for effective suppression of common mode noise on power and signal lines
- Constructed with ferrite core material for stable electromagnetic interference filtering
Applications
- Power supply input filtering
- Signal line noise suppression
- Ethernet Power over Ethernet (PoE) circuit protection
Procurement Notes
Verify the specific ordering suffix against the manufacturer datasheet to ensure correct packaging configuration. Confirm that the selected variant matches the required inductance and current ratings for your specific design constraints. Cross-reference the RoHS certification status if environmental compliance is mandatory for your project requirements.
Selection Notes
Select this component when designing circuits requiring robust common mode noise attenuation for high-current applications. Ensure the PCB footprint accommodates the horizontal package dimensions. Validate thermal performance under continuous load conditions given the 2A rated current and specified DC resistance values.
Part Context
This part belongs to the WE-SL5 series of surface-mount common mode chokes manufactured by Würth Elektronik. The series is characterized by its sectional winding construction, which distinguishes it from traditional toroidal or bobbin-wound designs. This architecture supports higher current densities while maintaining compact form factors suitable for modern electronic assemblies.
Replacement Considerations
Consult official substitution lists for verified alternatives within the WE-SL5 family. Ensure any replacement maintains identical electrical parameters including 250 µH inductance and 2A current rating.
