DLW21SZ491XQ2L

Common Mode Chokes Overview

The DLW21SZ491XQ2L is a single-channel common mode choke manufactured by Murata Electronics, belonging to the DLW21_Z series. It features an unshielded wirewound construction housed in a compact 0805 (2012 metric) surface-mount package with dimensions of 2 mm x 1.2 mm x 1.2 mm. The component provides an impedance of 490 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. It supports a maximum DC current of 200 mA and has a maximum DC resistance of 770 mOhms. Designed for automotive reliability, it holds AEC-Q200 qualification and operates within a temperature range of -40°C to +105°C.

Common Mode Chokes Feature Summary

• Provides high-impedance common mode noise suppression for signal lines
• Engineered for automotive applications with AEC-Q200 certification
• Utilizes unshielded wirewound technology for efficient filtering

Common Mode Chokes Applications

• Automotive signal line filtering
• High-frequency noise suppression in electronic circuits
• Common mode interference reduction in data transmission lines

Common Mode Chokes Procurement Notes

Verify the specific suffix 'Z' against official Murata documentation to confirm the exact impedance value and tolerance specifications. Ensure the selected packaging format matches production requirements, as options include Reel, Cut Tape, and MouseReel. Confirm that the AEC-Q200 qualification status aligns with target automotive application standards before finalizing procurement orders.

Common Mode Chokes Selection Notes

Select this component when a 490 Ohm impedance at 100 MHz is required for common mode noise attenuation. The 0805 footprint suits space-constrained PCB layouts. Consider the 200 mA current rating and 770 mOhms resistance for power loss calculations. The extended temperature range up to 105°C makes it suitable for demanding environments compared to standard commercial grade alternatives.

Common Mode Chokes Part Context

This part belongs to the Murata EMIFIL DLW21 series of common mode chokes. The series offers various impedance values in a standardized 0805 package. The DLW21_Z sub-series specifically denotes components designed for automotive use, ensuring robust performance under varying thermal conditions while maintaining consistent electrical characteristics for reliable signal integrity.

Common Mode Chokes Replacement Considerations

Consult official Murata substitution guides for verified equivalents. Cross-reference impedance, current ratings, and package dimensions when evaluating alternative parts. Generic substitutes may lack the specific AEC-Q200 automotive qualification required for this application.