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Product Detailed Parameters
- Description：CMC 3.3MH 1.5A 2LN TH
- Series：WE-LF
- Mfr：Würth Elektronik
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：1.5A
- DC Resistance (DCR) (Max)：150mOhm
- 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：3.3 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 7446122003 is a current-compensated common mode choke from the WE-LF Series. It features an inductance of 3.3 mH and a DC current rating of 1.5 A. The maximum DC resistance is specified as 0.06 Ω to 0.15 Ω depending on source documentation. Designed for surface mount applications, it operates within a temperature range of -40°C to +125°C.
Feature Summary
- Current-compensated design for effective noise suppression
- Surface mount construction for automated assembly
- Compliant with automotive reliability standards
Applications
- Automotive electronics systems
- Power supply input filtering
- Data line protection
Procurement Notes
Verify the specific datasheet version to confirm the exact DC resistance value, as sources indicate variations between 0.06 Ω and 0.15 Ω. Ensure the selected package variant matches the required PCB footprint and mounting orientation for the target application design.
Selection Notes
Select this component for applications requiring high common mode rejection in compact spaces. The 1.5 A rating suits moderate current loads. Verify thermal management requirements given the operating temperature limits and power dissipation characteristics under load conditions.
Part Context
This part belongs to the WE-LF series, which focuses on low-profile surface mount chokes. The series is engineered for automotive and industrial environments, offering robust performance against electromagnetic interference while maintaining small form factors suitable for dense circuit board layouts.
Replacement Considerations
Check for direct substitutes within the WE-LF series with matching inductance and current ratings. Ensure any alternative maintains AEC-Q200 qualification if used in automotive contexts. Verify pin compatibility and physical dimensions before substitution.
FAQ
Is this component qualified for automotive use?
Yes, the WE-LF series components are designed to meet AEC-Q200 standards for automotive applications.
What is the maximum operating temperature?
The maximum operating temperature for this component is +125°C.
