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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)：1.6Ohm
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.925" L x 0.630" W (23.50mm x 16.00mm)
- Height (Max)：1.004" (25.50mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：47 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 7446220047 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 with a tolerance of 30%. The component supports a maximum DC current of 400 mA and has a maximum DC resistance of 1.6 Ohms. It operates within a temperature range of -40°C to +125°C. The physical dimensions are approximately 23.50 mm in length, 16.00 mm in width, and 25.50 mm in height, utilizing a vertical 4-pin package.
Feature Summary
- Provides effective common mode noise suppression for AC mains power lines
- Features a shielded wirewound construction for high reliability
- Designed for through-hole PCB mounting with vertical orientation
Applications
- AC mains power line EMI filtering
- Power supply input stages
- Industrial equipment noise suppression
Procurement Notes
Verify the specific part number against official Wurth Elektronik datasheets to confirm electrical parameters such as inductance and current ratings. Ensure compatibility with your PCB footprint and thermal requirements. Check for recent Product Change Notifications (PCNs) regarding material or manufacturing updates before finalizing procurement decisions.
Selection Notes
Select this component when designing circuits requiring robust common mode noise attenuation on AC power lines. Consider the 400 mA current rating and 1.6 Ohm DCR for voltage drop and heating calculations. Verify that the through-hole package fits the assembly constraints and that the operating temperature range meets environmental specifications.
Part Context
This component belongs to the WE-LF series of common mode chokes manufactured by Würth Elektronik. The series is specifically engineered for applications involving mains power lines, offering high inductance values in compact through-hole packages suitable for industrial and consumer electronics.
Replacement Considerations
Consult official Wurth documentation for verified substitute part numbers within the WE-LF series or equivalent manufacturers. Ensure any replacement matches the 47 mH inductance, 400 mA current rating, and physical dimensions.
