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Product Detailed Parameters
- Description：CMC 22MH 400MA 2LN TH
- Series：WE-FC
- Mfr：Würth Elektronik
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：400mA
- DC Resistance (DCR) (Max)：1.61Ohm (Typ)
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.835" L x 0.835" W (21.20mm x 21.20mm)
- Height (Max)：0.701" (17.80mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：22 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 7448640404 is a through-hole common mode choke from the WE-FC series, designed for power line noise suppression. It features an inductance of 22 mH at 10 kHz and supports a maximum DC current of 400 mA. The component has a typical DC resistance (DCR) of 1.61 Ohms and operates within a temperature range of -40°C to +125°C. It utilizes a closed rectangular ferrite core with a seven-section winding structure to ensure excellent high-frequency performance. The package dimensions are 21.2 mm x 21.2 mm x 17.8 mm.
Feature Summary
- Utilizes a closed rectangular ferrite core construction for effective magnetic containment.
- Employs a seven-section winding design to optimize high-frequency noise suppression capabilities.
- Complies with RoHS3 specifications and REACH regulations for environmental safety.
Applications
- Power line EMI filtering
- Common mode noise suppression in electronic circuits
- AC/DC converter input stages
Procurement Notes
Verify the specific datasheet revision and mechanical drawing before integration, as manufacturing updates may occur. Confirm that the through-hole mounting style and pin configuration match the target PCB layout. Ensure the 400 mA current rating and 1.61 Ohm DCR meet the circuit requirements. Check for any recent Product Change Notifications (PCN) regarding material or dimensional changes.
Selection Notes
Select this component when a robust through-hole solution is required for power line filtering. The 22 mH inductance provides significant attenuation for common mode interference. The 400 mA current handling capacity suits moderate power applications. Consider the physical size constraints due to the vertical leaded package. Evaluate thermal performance based on the specified operating temperature range.
Part Context
This part belongs to the WE-FC series of common mode chokes by Würth Elektronik. The series is engineered for general-purpose electromagnetic interference suppression. These components are widely used in industrial and consumer electronics to maintain signal integrity and comply with emission standards.
Replacement Considerations
Cross-reference with other WE-FC series variants if different inductance or current ratings are needed. Verify compatibility with alternative manufacturers' through-hole common mode chokes having similar electrical parameters and footprint dimensions.
FAQ
What is the inductance value of the 7448640404?
The inductance is 22 mH measured at a frequency of 10 kHz.
What is the maximum DC current rating?
The maximum DC current rating is 400 mA.
What type of winding structure does it use?
It uses a seven-section winding structure for improved high-frequency performance.
