DLW21SN900HQ2L

Common Mode Chokes Overview

The DLW21SN900HQ2L is a wirewound common mode choke filter from the Murata EMIFIL DLW21SN series, designed for surface mount applications in the 0805 (2.0mm x 1.2mm) package. It provides a common mode impedance of 90 Ω at a test frequency of 100 MHz with a maximum DC resistance of 4.3 Ω. The component supports a rated voltage of 20 V and operates within a temperature range of -40 °C to +85 °C. It handles a maximum DC current of 280 mA and complies with RoHS and REACH standards.

Common Mode Chokes Feature Summary

• High coupling coefficient design suppresses noise on differential signal lines without causing distortion during high-speed data transmission.
• Wirewound construction ensures stable performance and effective electromagnetic interference mitigation in compact layouts.

Common Mode Chokes Applications

• Noise suppression for USB cables in personal computers and peripheral devices
• Signal line filtering for LVDS connections in notebook PCs
• Common mode noise reduction in LCD panels and small digital AV equipment such as digital cameras

Common Mode Chokes Procurement Notes

Verify the specific suffix against official documentation to confirm electrical ratings and compliance status. Confirm that the required impedance and current specifications align with the circuit design requirements before procurement. Ensure compatibility with standard surface mount assembly processes.

Common Mode Chokes Selection Notes

Select this component when space constraints require an 0805 footprint for high-frequency noise suppression. Consider the 280 mA current rating and 4.3 Ω DC resistance limits to ensure adequate signal integrity. Evaluate the 90 Ω impedance at 100 MHz against the target noise spectrum for optimal filtering effectiveness.

Common Mode Chokes Part Context

This part belongs to the DLW21S series of wirewound common mode chokes manufactured by Murata Electronics. The series is characterized by its ability to maintain signal quality while attenuating common mode noise. It serves as a critical passive component in modern portable electronics requiring reliable EMI control.

Common Mode Chokes FAQ

Does the DLW21SN900HQ2L meet automotive qualification standards?

No, the DLW21SN900HQ2L is not AEC-Q200 qualified. Automotive-grade alternatives within the same form factor, such as those in the DLW21SZ series, should be considered for automotive applications.

What is the physical size of the DLW21SN900HQ2L?

The component measures 2.0 mm in length, 1.2 mm in width, and 1.2 mm in height, corresponding to the standard 0805 metric package dimensions.