744233121

Overview

The Würth Elektronik 744233121 is a surface-mount common mode choke from the WE-CNSW series, designed for signal line noise suppression. It features two lines with an impedance of 120 Ohms at 100 MHz and a maximum DC current rating of 280 mA. The component has a maximum DC resistance (DCR) of 300 mOhms and operates within a temperature range of -40°C to +125°C. Packaged in a compact 0603 (1608 metric) footprint, it is suitable for space-constrained PCB layouts.

Feature Summary

• Provides common mode noise suppression for high-frequency signal lines
• Compact surface-mount design optimized for dense PCB applications
• Rated for automotive reliability standards

Applications

• High-speed data interface filtering
• Automotive electronic systems
• Consumer electronics signal protection

Procurement Notes

Verify the specific suffix codes against the manufacturer's official datasheet to ensure correct impedance and current ratings. Confirm RoHS compliance status and AEC-Q200 qualification requirements prior to procurement. Check for any recent product change notifications that may affect pinout or material composition.

Selection Notes

Select this component when low parasitic capacitance and high impedance are required for signal integrity. Ensure the operating current remains below the 280 mA limit to prevent saturation. Verify that the 0603 package dimensions fit the available board space and thermal constraints.

Part Context

This part belongs to the WE-CNSW series of common mode chokes from Würth Elektronik. These components are engineered for RFI/EMI suppression in digital circuits. The series offers various impedance values and current ratings to suit different signal line requirements.

Replacement Considerations

Check for direct substitutes within the WE-CNSW series with matching 120 Ohm impedance and 280 mA rating. Verify package compatibility and electrical parameters before substitution.