DLW21SZ900HQ2L

Common Mode Chokes Overview

The DLW21SZ900HQ2L is a wirewound common mode choke from the Murata EMIFIL DLW21Z series, designed for surface-mount PCB assembly. It features a 0805 (2012 metric) package with dimensions of 2.0 mm x 1.2 mm x 1.2 mm. The component provides a nominal impedance of 90 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. It supports a maximum DC current of 280 mA and has a maximum DC resistance of 410 mOhms. Rated for a voltage of 50 VDC, it operates within a temperature range of -40°C to +105°C and holds AEC-Q200 qualification.

Common Mode Chokes Feature Summary

• High coupling coefficient design suppresses noise on differential signal lines without causing distortion during high-speed data transmission.
• AEC-Q200 qualified construction ensures reliability for automotive electronic applications.
• Wirewound structure in a compact 0805 footprint enables effective electromagnetic interference filtering in space-constrained layouts.

Common Mode Chokes Applications

• Noise suppression for USB interfaces in personal computers and peripheral devices.
• Signal line protection for LVDS connections in notebook PCs.
• Electromagnetic interference filtering for LCD panels and small digital AV equipment such as digital cameras.

Common Mode Chokes Procurement Notes

Verify the specific suffix HQ2L against official Murata documentation to confirm the exact rating and packaging configuration. Confirm that the AEC-Q200 automotive qualification aligns with target application requirements. Ensure the 0805 package dimensions match the printed circuit board land pattern specifications before finalizing procurement orders.

Common Mode Chokes Selection Notes

Select this component when designing circuits requiring common mode noise suppression for high-speed differential signals like USB or LVDS. The 90 Ohm impedance at 100 MHz targets specific frequency bands for EMI reduction. Consider the 280 mA current rating and 410 mOhms DC resistance to ensure compatibility with the power budget and signal integrity requirements of the target interface.

Common Mode Chokes Part Context

This part belongs to the Murata DLW21Z series of chip common mode chokes. The series utilizes wirewound technology to achieve high coupling coefficients suitable for suppressing noise on high-speed signal lines. The DLW21Z variant specifically extends the operating temperature range up to 105°C compared to standard industrial grades, supporting broader environmental conditions.

Common Mode Chokes Replacement Considerations

Consult official Murata documentation for confirmed substitute part numbers. Verify that any alternative maintains the same 0805 footprint, 90 Ohm impedance at 100 MHz, and AEC-Q200 qualification status to ensure functional equivalence.