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Product Detailed Parameters
- Description：CMC 47MH 400MA 2LN SMD
- Series：WE-LF
- Mfr：Würth Elektronik
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：400mA
- DC Resistance (DCR) (Max)：2.6Ohm
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.917" L x 0.728" W (23.30mm x 18.50mm)
- Height (Max)：0.453" (11.50mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：47 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 7446630047 is a WE-LF series current-compensated common mode choke designed for surface mount applications. It features an inductance of 47 mH at 10 kHz and supports a rated AC voltage of 250V. The component handles a maximum DC current of 400mA with a maximum DC resistance of 2.6 Ohms. Its physical dimensions are 23.30mm x 18.50mm x 11.50mm, utilizing a horizontal package with four PCB terminals. It operates within a temperature range of -40°C to +125°C.
Feature Summary
- Current-compensated design for effective noise suppression in power lines
- Surface mount construction for automated assembly integration
- High inductance value optimized for low-frequency interference filtering
Applications
- Mains power line filtering
- Common mode noise suppression in electronic equipment
- Power supply input stages
Procurement Notes
Verify the specific ordering suffix against the manufacturer datasheet to ensure correct packaging configuration. Confirm that the selected variant matches the required current rating and inductance tolerance for the target circuit. Check RoHS compliance status and moisture sensitivity level requirements before finalizing procurement orders.
Selection Notes
Select this component when high inductance is required for mains frequency noise attenuation in compact spaces. Ensure the PCB footprint accommodates the 23.30mm by 18.50mm dimensions and 11.50mm height. Verify that the 400mA current rating meets the operational load requirements without exceeding thermal limits defined by the 2.6 Ohm DC resistance.
Part Context
This part belongs to the WE-LF series of common mode chokes from Würth Elektronik. The series is specifically engineered for suppressing electromagnetic interference on power lines. The 7446630047 variant provides a balance of high inductance and moderate current handling capability suitable for general-purpose power filtering applications.
Replacement Considerations
Consult official substitution lists for compatible WE-LF variants with similar inductance and current ratings. Verify pin compatibility and mechanical dimensions before replacing to ensure board fitment.
