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Product Detailed Parameters
- Description：CMC 47MH 400MA 2LN TH
- Series：WE-LF
- Mfr：Würth Elektronik
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：400mA
- DC Resistance (DCR) (Max)：2Ohm
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.906" L x 0.906" W (23.00mm x 23.00mm)
- Height (Max)：0.571" (14.50mm)
- Package / Case：Horizontal, 4 PC Pin
- Inductance @ Frequency：47 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 7446720047 is a through-hole common mode choke from the WE-LF series, designed for power-line filtering. It features an inductance of 47 mH at 10 kHz and supports a maximum current of 400 mA. The component has a DC resistance of 2 Ohms and is rated for 250 V AC. It utilizes a two-line configuration to suppress electromagnetic interference in general electronic equipment applications.
Feature Summary
- Provides high impedance to common-mode noise signals for effective EMI suppression
- Designed specifically for power-line filtering in general electronic equipment
- Constructed with a two-line configuration for balanced signal handling
Applications
- Power-line filtering in general electronic equipment
- Common mode noise suppression in AC power inputs
- EMI reduction in consumer electronics power stages
Procurement Notes
Verify the exact part number 7446720047 against manufacturer datasheets to ensure compatibility with your circuit design. Confirm that the 400 mA current rating and 2 Ohm DCR meet your system requirements. Check for RoHS compliance status as indicated in official documentation before finalizing procurement decisions.
Selection Notes
Select this component when designing circuits requiring robust common mode noise rejection for AC power lines. Ensure the through-hole mounting style fits your PCB layout constraints. Verify that the 47 mH inductance value provides sufficient attenuation for your specific frequency range of interest.
Part Context
This component belongs to Würth Elektronik's WE-LF series of common mode chokes. These components are engineered for general electronic equipment applications where reliable EMI filtering is required. The series offers various inductance values and current ratings to suit different power line filtering needs.
Replacement Considerations
Consult official Wurth Elektronik documentation for verified substitute part numbers within the WE-LF series. Ensure any replacement maintains equivalent inductance, current rating, and physical dimensions for direct interchangeability.
