DLW21SH900HQ2L

Common Mode Chokes Overview

The DLW21SH900HQ2L is a single-channel common mode choke filter manufactured by Murata Electronics, belonging to the DLW21SH_HQ2 series. It features a wirewound construction in an unshielded 0805 (2012 metric) surface-mount package with dimensions of 2 mm x 1.2 mm x 0.9 mm. The component provides a common mode 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 320 mOhms. Rated for 20 VDC, it operates within a temperature range of -40°C to +125°C.

Common Mode Chokes Feature Summary

• High self-resonant frequency design enabling high cutoff frequencies for effective noise suppression.
• Impedance matching characteristics optimized for superior transmission of high-speed signals.
• AEC-Q200 qualified automotive-grade reliability suitable for harsh environments.

Common Mode Chokes Applications

• Automotive powertrain and safety equipment
• Automotive infotainment and comfort systems
• USB 2.0, HDMI 1.4b, and HDMI 2.0 interfaces
• USB 3.1 Gen 2 data lines

Common Mode Chokes Procurement Notes

Verify the specific suffix HQ2L confirms the high-frequency variant with impedance matching characteristics distinct from other DLW21SH series options. Confirm AEC-Q200 qualification status if automotive compliance is required. Ensure the 0805 footprint matches the PCB layout constraints. Validate that the 280mA current rating meets the circuit's operational requirements without derating issues above 105°C.

Common Mode Chokes Selection Notes

Select this component when high-speed signal integrity is critical alongside EMI suppression. The DLW21SH_HQ2 series is specifically engineered for applications requiring impedance matching to minimize signal reflection. Choose this part over standard variants if the application involves HDMI or USB 3.1 Gen 2 protocols where high cutoff frequencies are necessary. Ensure the 0805 package size fits the available board space.

Common Mode Chokes Part Context

This component is part of the Murata EMIFIL DLW21SH series, which includes automotive-grade common mode chokes designed for compact electronic devices. The series offers various impedance values and current ratings within the 0805 footprint. The DLW21SH900HQ2L specifically targets high-speed digital interfaces, providing a balance between noise attenuation and signal preservation in space-constrained automotive and consumer electronics designs.

Common Mode Chokes Replacement Considerations

DLW21SH670HQ2L offers lower impedance (67 Ohms). DLW21SH121HQ2L provides higher impedance (120 Ohms). DLW21SZ900HQ2L shares similar electrical parameters but belongs to the DLW21SZ_Z series with different thermal characteristics.