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Product Detailed Parameters
- Description：CMC 2.2MH 2A 2LN TH
- Series：WE-LF
- Mfr：Würth Elektronik
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：2A
- DC Resistance (DCR) (Max)：100mOhm
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.709" L x 0.709" W (18.00mm x 18.00mm)
- Height (Max)：0.512" (13.00mm)
- Package / Case：Horizontal, 4 PC Pin
- Inductance @ Frequency：2.2 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 7446622002 is a current-compensated common mode choke from the WE-LF series, designed for mains power line filtering. It features a through-hole mounting style with two lines and an inductance of 2.2 mH at 10 kHz. The component supports a rated AC voltage of 250V and a maximum DC current of 2A. Its DC resistance (DCR) is specified at 100 milliohms. Operating temperatures range from -40°C to +125°C. Dimensions are 23.50mm length, 16.00mm width, and 25.50mm height.
Feature Summary
- Current-compensated design for efficient magnetic field cancellation
- Suitable for mains power line EMI suppression applications
- Through-hole construction for robust PCB integration
Applications
- Mains power input filtering
- EMI suppression in AC power circuits
- Common mode noise reduction in power supplies
Procurement Notes
Verify the specific datasheet version against the manufacturer's official documentation before implementation. Confirm that the 100 milliohm DCR specification aligns with your thermal and efficiency requirements. Ensure the through-hole footprint dimensions match your PCB layout constraints. Check for any recent Product Change Notifications (PCN) regarding material or manufacturing updates.
Selection Notes
Select this component when current compensation is required to minimize core saturation and improve common mode rejection ratio. Compare the 2.2 mH inductance value against your target frequency attenuation needs. Evaluate the 2A current rating against peak load conditions. Consider the through-hole package if mechanical stress resistance is prioritized over surface area constraints.
Part Context
This part belongs to the WE-LF series of common mode chokes specifically engineered for mains power applications. The series emphasizes high current handling and low impedance characteristics. The 7446622002 variant utilizes a current-compensated topology, distinguishing it from standard differential mode chokes by its ability to handle balanced currents efficiently while suppressing unbalanced noise.
Replacement Considerations
Cross-reference with other WE-LF series parts for similar inductance and current ratings. Verify pin compatibility and physical dimensions before substituting. Ensure the replacement maintains the same current-compensated architecture if magnetic balance is critical.
