7448640405

Overview

The Würth Elektronik 7448640405 is a through-hole common mode choke from the WE-FC series, designed for power line applications. It features an inductance of 33 mH at 10 kHz and supports a maximum DC current of 300 mA to 450 mA depending on specific rating conditions. The component exhibits a typical DC resistance of 2 Ohms and operates within a temperature range of -40°C to +125°C. It utilizes a closed rectangular ferrite core with an 8-section winding structure to ensure excellent high-frequency performance and minimal stray inductance.

Feature Summary

• Utilizes an eight-section winding configuration on a closed rectangular ferrite core to achieve superior high-frequency noise suppression capabilities.
• Engineered for symmetrical interference suppression with low stray inductance characteristics suitable for sensitive power line filtering.
• Complies with AEC-Q200 automotive qualification standards, ensuring reliability for demanding electronic environments.

Applications

• Power line EMI filtering in automotive electronics systems
• Common mode noise suppression in industrial power supplies
• Signal integrity protection in communication equipment power inputs

Procurement Notes

Verify the specific datasheet revision when ordering, as historical data indicates potential variations in rated current (e.g., 300 mA vs. 450 mA) and inductance values across different production batches or document updates. Confirm package orientation and pin compatibility with your PCB footprint prior to final procurement decisions.

Selection Notes

Select this component when high inductance values are required for low-frequency common mode noise attenuation in through-hole designs. The 33 mH rating makes it suitable for applications where standard chokes fail to provide sufficient impedance. Ensure the operating current remains below the specified maximum DC current limit to prevent saturation.

Part Context

This part belongs to the WE-FC series, which focuses on common mode chokes for power lines. The series is characterized by its robust construction and compliance with automotive standards, making it a staple for engineers designing reliable power interfaces in vehicles and industrial machinery requiring certified components.

Replacement Considerations

Direct substitutes within the same series include parts like 7448640417, though inductance and current ratings differ significantly. Cross-referencing with other manufacturers requires matching the 33 mH inductance, 2 Ohm DCR, and through-hole package dimensions to ensure functional equivalence.

FAQ

What is the core material used in the 7448640405?

The component uses a closed rectangular ferrite core, which contributes to its high-frequency performance and low stray inductance.

Does this component meet automotive standards?

Yes, the WE-FC series, including part number 7448640405, is qualified according to the AEC-Q200 standard.