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Product Detailed Parameters
- Description：CMC 1MH 3A 2LN TH
- Series：WE-LF
- Mfr：Würth Elektronik
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：3A
- DC Resistance (DCR) (Max)：40mOhm
- 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：1 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 7446223001 is a current-compensated common mode choke from the WE-LF series, designed for mains power line filtering. It features an inductance of 1 mH at 10 kHz and supports a rated DC current of 3 A with two lines. The component has a maximum DC resistance (DCR) of 40 milliohms and operates within a temperature range of -40°C to 125°C. It utilizes a vertical through-hole package with four pins, measuring 23.50 mm in length, 16.00 mm in width, and up to 25.50 mm in height. The device is rated for 250 V AC.
Feature Summary
- Provides common mode noise suppression for mains power lines
- Features current-compensated design for efficient filtering
- Supports high operating temperatures up to 125°C
Applications
- Mains power line EMI filtering
- Power supply input stages
- Industrial equipment power interfaces
Procurement Notes
Verify the specific part number 7446223001 against official Würth Elektronik documentation to confirm electrical parameters and mechanical dimensions. Ensure compatibility with PCB layout requirements for through-hole mounting. Check for RoHS compliance status and any recent product change notices that may affect specifications or availability.
Selection Notes
Select this component when designing circuits requiring common mode chokes for AC mains applications with currents up to 3 A. Consider the 1 mH inductance value for effective noise attenuation at relevant frequencies. Evaluate the physical footprint constraints against the specified dimensions of 23.50 mm x 16.00 mm x 25.50 mm to ensure proper board integration.
Part Context
This component belongs to the WE-LF series of common mode chokes specifically engineered for mains power lines. The series is characterized by its ability to handle significant current loads while maintaining low DC resistance. These chokes are widely used in applications where electromagnetic interference suppression on power inputs is critical for regulatory compliance and system stability.
Replacement Considerations
Consult official manufacturer substitution guides for verified alternatives. Cross-reference inductance, current rating, and physical dimensions when evaluating potential substitutes to ensure functional equivalence in the target application.
