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Product Detailed Parameters
- Description：CMC 12MH 400MA 2LN TH
- Series：WE-TFCH
- Mfr：Würth Elektronik
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：400mA
- DC Resistance (DCR) (Max)：2Ohm
- 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 0.600" W (17.00mm x 15.23mm)
- Height (Max)：0.481" (12.23mm)
- Package / Case：Horizontal, 4 PC Pin
- Inductance @ Frequency：12 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 744861120 is a common mode filter choke from the WE-TFCH Type UT series. It features an inductance of 12 mH and a maximum DC resistance of 2 ohms. The component supports a maximum DC current rating of 0.4 A. Designed for PCB mount installation, it operates within a temperature range of -40°C to +125°C.
Feature Summary
- Provides common mode noise suppression for power line applications
- Utilizes horizontal mounting configuration for space-efficient PCB integration
- Constructed with high-temperature resistant materials for stable operation
Applications
- Power supply input filtering
- EMI suppression in electronic equipment
- Signal integrity protection in data lines
Procurement Notes
Verify the specific suffix codes against the official datasheet to ensure correct electrical characteristics and packaging options. Confirm RoHS compliance status and lead times directly with authorized distributors prior to ordering. Cross-reference the manufacturer part number with engineering specifications to avoid substitution errors during procurement.
Selection Notes
Select this component when a 12 mH inductance value is required for common mode noise reduction. Ensure the circuit design accommodates the 2 ohm DC resistance and 0.4 A current limit. Verify that the PCB layout supports the through-hole mounting style and physical dimensions specified in the mechanical drawings.
Part Context
This component belongs to the WE-TFCH series of common mode chokes manufactured by Würth Elektronik. These components are designed for general-purpose EMI filtering in various electronic devices. The series offers standardized footprints and electrical ratings to simplify design-in processes for engineers requiring reliable passive filtering solutions.
Replacement Considerations
Consult the official Wurth Elektronik RedExpert tool or datasheet for verified substitute part numbers. Do not assume cross-compatibility with other series without confirming pinout, inductance tolerance, and current rating alignment.
