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Product Detailed Parameters
- Description：CMC 27MH 600MA 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)：600mA
- DC Resistance (DCR) (Max)：1.2Ohm
- 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：27 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 7446630027 is a surface-mount current-compensated common mode choke belonging to the WE-LF series. It features two lines with an inductance of 27 mH measured at 10 kHz and a maximum DC resistance of 1.2 Ohms. The component supports a rated current of 600 mA and operates within a temperature range of -40°C to +125°C. Its physical dimensions are 23.30 mm in length, 18.50 mm in width, and a maximum height of 11.50 mm. The device is designed for mains power line filtering applications.
Feature Summary
- Provides high suppression of asymmetric interferences on mains power lines
- Utilizes a compact surface-mount design suitable for automated assembly
- Constructed as a current-compensated choke for effective noise reduction
Applications
- Mains power line filtering
- Suppression of common mode noise in electronic equipment
- Power supply input stages
Procurement Notes
Verify the specific ordering suffix to ensure the correct packaging format, such as tape and reel or cut tape, matches production requirements. Confirm that the RoHS compliance status aligns with environmental regulations applicable to the target market. Ensure the lead time accommodates the standard delivery schedule provided by the manufacturer for this specific part number.
Selection Notes
Select this component when designing circuits requiring significant common mode noise attenuation on AC mains inputs. The 27 mH inductance value offers substantial impedance at typical interference frequencies. The 600 mA current rating must be sufficient for the application's operational load while maintaining thermal stability within the specified operating temperature range.
Part Context
This component is part of the WE-LF series from Würth Elektronik, which specializes in common mode chokes for mains power lines. The series is characterized by its ability to deliver high suppression of asymmetric interferences in a compact form factor. These components are engineered to meet stringent electromagnetic compatibility standards for power line applications.
Replacement Considerations
Consult official substitution lists for verified alternatives. Cross-reference inductance, current rating, and physical dimensions when evaluating potential substitutes to ensure functional equivalence without redesigning the PCB footprint.
