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Product Detailed Parameters
- Description：CMC 3.3MH 1.1A 2LN TH
- Series：WE-FC
- Mfr：Würth Elektronik
- Package：Tube
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：1.1A
- DC Resistance (DCR) (Max)：250mOhm (Typ)
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.835" L x 0.835" W (21.20mm x 21.20mm)
- Height (Max)：0.701" (17.80mm)
- 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 7448640398 is a WE-FC series common mode power line choke designed for through-hole mounting. It features an inductance of 3.3 mH at 10 kHz and supports a maximum DC current of 1.2 A with a typical DC resistance of 0.25 ohms. The component operates within a temperature range of -40°C to +125°C and is rated for AC voltages up to 250 V. Measuring 21.2 mm x 16.6 mm, it provides effective electromagnetic interference suppression for power lines.
Feature Summary
- Current compensated design offering approximately twice the leakage inductance compared to comparable toroidal chokes
- AEC-Q200 qualified for automotive reliability standards
- Vertical package configuration with four pins for secure PCB integration
Applications
- Power line electromagnetic interference filtering
- Automotive electronic circuit protection
- Common mode noise suppression in industrial power supplies
Procurement Notes
Verify the specific inductance tolerance and DC resistance values against the official datasheet before procurement. Confirm that the vertical pin spacing matches the target PCB footprint dimensions. Ensure the selected variant meets the required AEC-Q200 qualification if used in automotive applications. Cross-reference the manufacturing date code to ensure compliance with recent product change notifications.
Selection Notes
Select this component when high leakage inductance is required for superior common mode noise attenuation. The 1.2 A current rating suits moderate power applications where compact size is prioritized over higher current capacity. Consider the vertical form factor for space-constrained boards requiring robust mechanical stability. Evaluate thermal dissipation requirements given the 0.25 ohm DC resistance under continuous load conditions.
Part Context
This part belongs to the WE-FC series, which specializes in current compensated chokes for power line applications. The series emphasizes high leakage inductance relative to standard toroidal designs. The 7448640398 specifically targets applications requiring AEC-Q200 certification and reliable performance in automotive environments.
Replacement Considerations
Direct substitutes include other WE-FC series parts with similar inductance and current ratings, such as 7448640403 or 7448640416, provided they meet the specific electrical requirements.
