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Product Detailed Parameters
- Description：CMC 47MH 250MA 2LN SMD
- Series：WE-UCF
- Mfr：Würth Elektronik
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Power, Signal Line
- Number of Lines：2
- Current Rating (Max)：250mA
- DC Resistance (DCR) (Max)：4Ohm
- Voltage Rating - DC：80V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.571" L x 0.492" W (14.50mm x 12.50mm)
- Height (Max)：0.307" (7.80mm)
- Package / Case：Horizontal, 4 Flat Lead
- Inductance @ Frequency：47 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 744290473 is a WE-UCF series common mode choke filter designed for surface mount technology. It features an inductance of 47 mH at a test frequency of 10 kHz and supports a maximum DC current of 250 mA. The component has a maximum DC resistance of 4 Ohms and a rated voltage of 80 V DC. It operates within a temperature range of -40°C to +125°C. Physical dimensions are 14.50 mm in length, 12.50 mm in width, and 7.80 mm in height.
Feature Summary
- Provides effective common mode noise suppression for power and signal lines
- Designed for compact surface mount PCB integration
- Operates reliably across extended industrial temperature ranges
Applications
- Power supply input filtering
- Signal line noise reduction
- EMI suppression in electronic circuits
Procurement Notes
Verify the specific ordering suffix to ensure correct packaging configuration, such as cut tape or reel options. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications. Cross-reference the manufacturer datasheet for updated mechanical drawings and recommended soldering profiles prior to implementation.
Selection Notes
Select this component when high inductance values are required for low-frequency noise attenuation in space-constrained designs. Ensure the operating current remains below the 250 mA rating to prevent saturation. Evaluate thermal performance under load conditions given the 4 Ohm DC resistance. Compare physical footprint constraints against available PCB real estate.
Part Context
This component belongs to the WE-UCF universal choke filtering series from Würth Elektronik. The series offers various inductance values tailored for different filtering needs. The 744290473 specifically targets applications requiring significant common mode impedance at lower frequencies while maintaining a small SMD profile suitable for modern electronics manufacturing.
Replacement Considerations
Check for direct substitutes within the WE-UCF series with similar inductance and current ratings. Verify pin compatibility and dimensional tolerances before substituting. Consult official distributor databases for cross-reference lists provided by the manufacturer.
