B385MD0S

Overview

The B385MD0S is a surface mount bandpass filter manufactured by Knowles Dielectric Labs, designed for millimeter-wave applications. It operates at a center frequency of 38.5 GHz with a bandwidth of 2.75 GHz. The component features a 50 Ohm impedance and utilizes temperature-stable, high-permittivity dielectrics combined with thin-film processing to achieve high selectivity. It is housed in a compact SMD package suitable for board mounting.

Feature Summary

• Utilizes temperature-stable, high-permittivity dielectrics for consistent performance
• Employs thin-film processing technology to ensure high selectivity
• Designed specifically for millimeter-wave 5G communication systems

Applications

• Millimeter-wave 5G infrastructure
• High-frequency RF signal conditioning
• Bandpass filtering in mmWave communication modules

Procurement Notes

Verify the specific suffix requirements when ordering, as variants such as B385MD0S-T may exist with different packaging configurations like reels or cut tape. Confirm that the standard lead time aligns with project schedules, as manufacturing cycles can extend up to eighteen weeks. Ensure compatibility with existing PCB footprints and thermal management strategies before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring precise filtering at 38.5 GHz with minimal insertion loss characteristics typical of thin-film technologies. Consider the physical dimensions and mounting style to ensure integration into space-constrained mmWave assemblies. Evaluate the thermal operating range and stability provided by the high-permittivity dielectric materials against environmental stressors in the target application environment.

Part Context

This part belongs to the Knowles Dielectric Labs catalog of surface mount bandpass filters. These components are engineered using advanced thin-film processes on stable dielectric substrates. The series targets high-frequency applications where size, weight, and performance stability are critical constraints, particularly in next-generation wireless communication standards.

Replacement Considerations

Check for compatible alternatives within the same manufacturer's portfolio that share identical center frequencies and bandwidth specifications. Verify mechanical footprint compatibility if substituting with other SMD bandpass filters from different vendors. Ensure electrical parameters such as impedance and insertion loss meet the original design requirements.