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Product Detailed Parameters
- Description：CMC 400UH 3.6A 2LN TH
- Series：WE-LF
- Mfr：Würth Elektronik
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：3.6A
- DC Resistance (DCR) (Max)：20mOhm
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.728" L x 0.531" W (18.50mm x 13.50mm)
- Height (Max)：0.807" (20.50mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：400 µH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 74461240004 is a through-hole common mode choke from the WE-LF series. It features an inductance of 400 µH at 10 kHz and supports a DC current rating of 3.6 A. The component has a maximum DC resistance of 0.02 Ω (20 mΩ) and operates within a temperature range of -40°C to +125°C. Rated for 250 V AC, it is designed for two-line applications and holds AEC-Q200 automotive qualification.
Feature Summary
- Dual-line common mode filtering capability
- Automotive grade AEC-Q200 qualification
- High thermal stability up to 125°C
- Through-hole mounting construction
Applications
- Automotive power line noise suppression
- DC-DC converter input/output filtering
- Industrial control system EMI reduction
- Power supply common mode interference mitigation
Procurement Notes
Verify the specific ordering suffix against the manufacturer datasheet to confirm exact electrical tolerances and packaging configuration. Ensure the procurement specification matches the required inductance value of 400 µH and current rating of 3.6 A. Confirm that the through-hole package style aligns with the target PCB layout requirements before finalizing the order.
Selection Notes
Select this component when automotive reliability standards are mandatory for power line applications. The low DC resistance minimizes power loss in high-current circuits. Verify that the 400 µH inductance provides sufficient attenuation for the target frequency spectrum. Ensure the physical dimensions fit the available board space for through-hole assembly processes.
Part Context
This part belongs to the WE-LF series of power line chokes manufactured by Würth Elektronik. The series is engineered for robust performance in demanding environments. The 74461240004 variant specifically targets applications requiring high current handling and strict electromagnetic compatibility standards in automotive and industrial sectors.
Replacement Considerations
Consult the official Würth Elektronik cross-reference documentation for verified substitute part numbers. Do not assume functional equivalence based solely on similar inductance or current ratings. Verify pinout compatibility and mechanical footprint dimensions before considering alternative components.
