DLW21SZ121HQ2L

Common Mode Chokes Overview

The DLW21SZ121HQ2L is a single-channel common mode filter choke manufactured by Murata Electronics, designed for surface mount technology. It features an impedance of 120 Ohms with a tolerance of 25%, measured at a test frequency of 100 MHz. The component supports a maximum DC current of 280 mA and exhibits a maximum DC resistance of 410 mOhms. It operates within a temperature range of -40°C to +105°C and is housed in a compact 0805 (2012 metric) package measuring 2 mm x 1.2 mm x 1.2 mm. This part is AEC-Q200 qualified.

Common Mode Chokes Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• High-temperature operation capability up to +105°C
• Compact 0805 surface-mount footprint for space-constrained designs

Common Mode Chokes Applications

• Automotive electronic circuit protection
• Common mode noise suppression in high-temperature environments
• Signal line filtering in compact PCB layouts

Common Mode Chokes Procurement Notes

Verify the specific suffix 'HQ2L' against official Murata documentation to confirm exact tape-and-reel specifications and moisture sensitivity level. Ensure the procurement channel provides traceability to the manufacturer's original packaging. Confirm that the delivered units match the AEC-Q200 qualification status required for your application. Cross-reference the datasheet revision date to ensure compliance with current manufacturing standards.

Common Mode Chokes Selection Notes

Select this component when automotive-grade reliability and high-temperature stability are required alongside a small form factor. The 120 Ohm impedance rating suits applications targeting specific noise frequencies around 100 MHz. Compare the 280 mA current rating against your circuit's operational load to prevent saturation. Consider the unshielded construction if magnetic interference from adjacent components is not a primary concern.

Common Mode Chokes Part Context

This component belongs to the DLW21 series of wirewound common mode chokes. The 'Z' in the model number typically denotes the extended temperature range variant compared to standard versions. It is part of Murata's EMIFIL product line, focusing on electromagnetic interference suppression in compact electronic devices.

Common Mode Chokes Replacement Considerations

Check for other DLW21SZ variants with different impedance values if the 120 Ohm specification does not match circuit requirements. Verify pin compatibility and physical dimensions before substituting with non-Murata brands to ensure board fit.