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Product Detailed Parameters
- Description：CMC 18MH 300MA 2LN TH
- Series：WE-TFC
- Mfr：Würth Elektronik
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：300mA
- DC Resistance (DCR) (Max)：3.1Ohm
- Voltage Rating - DC：-
- Voltage Rating - AC：400V
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.669" L x 0.433" W (17.00mm x 11.00mm)
- Height (Max)：0.669" (17.00mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：18 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 744862180 is a current-compensated common mode choke from the WE-TFC series. It features an inductance of 18 mH and a maximum DC current rating of 300 mA. The component has a maximum DC resistance of 3.1 Ohms and operates within a temperature range of -40°C to +125°C. Designed for power line applications, it utilizes a ferrite core and is available in an unshielded configuration.
Feature Summary
- Current-compensated design for effective noise suppression
- Ferrite core construction for stable performance
- Unshielded structure suitable for various mounting orientations
Applications
- Power line filtering
- Common mode noise suppression
- Electronic equipment EMI reduction
Procurement Notes
Verify the specific suffix UT against official Wurth Elektronik documentation to confirm exact electrical tolerances and physical dimensions. Ensure the selected variant matches the required 18 mH inductance and 300 mA current rating for the target application circuit. Cross-reference datasheet revisions to confirm compliance with current RoHS and REACH standards before finalizing procurement orders.
Selection Notes
Select this component when a 18 mH common mode choke with a 300 mA current rating is required. The unshielded design allows for flexible PCB layout orientation. Verify that the 3.1 Ohm DC resistance fits within the system's voltage drop constraints. Confirm that the operating temperature range of -40°C to +125°C meets environmental requirements.
Part Context
This part belongs to the WE-TFC series of current-compensated chokes by Würth Elektronik. These components are engineered for power line applications where common mode noise attenuation is critical. The series offers various inductance values and current ratings to suit different power supply filtering needs.
Replacement Considerations
Direct substitutes include other parts from the WE-TFC series with matching 18 mH inductance and similar current ratings. Verify pin compatibility and physical footprint before substitution.
