ATF-551M4-BLK

Overview

The ATF-551M4-BLK is a monolithic microwave integrated circuit (MMIC) from Broadcom Limited, designed for high-frequency applications. This specific variant features a black epoxy coating on the package surface, which serves as an identification marker distinct from standard uncoated versions. The device typically operates within the Ka-band frequency range, providing amplification capabilities essential for radar and communication systems. Key electrical parameters such as gain, noise figure, and output power are defined by the underlying ATF-551M4 architecture, though exact values require consultation of the official datasheet. The component utilizes a surface-mount package suitable for automated assembly processes in high-volume manufacturing environments.

Feature Summary

• Integrated MMIC design optimized for Ka-band signal amplification
• Black epoxy coating provides visual differentiation and identification
• Surface-mount package facilitates automated PCB assembly

Applications

• Military radar systems requiring high-frequency amplification
• Point-to-point microwave communication links
• Satellite communication ground stations

Procurement Notes

Verify the black coating specification against procurement requirements, as it may indicate a specific lot or revision. Confirm the part number matches the exact suffix to ensure compatibility with existing inventory. Request manufacturer documentation to validate the electrical characteristics associated with this coated variant. Ensure storage conditions meet moisture sensitivity level requirements prior to assembly.

Selection Notes

Select this variant when visual identification of the component is required during assembly or inspection. Compare the black-coated version against standard uncoated parts to determine if the coating offers any additional environmental protection or if it is purely for identification. Evaluate the Ka-band performance metrics against system requirements for gain and noise figure. Consider the surface-mount package type for compatibility with existing PCB footprints.

Part Context

The ATF-551 series comprises various MMICs designed for broadband amplification. The ATF-551M4 specifically targets higher frequency operations. The -BLK suffix denotes the black epoxy coating, distinguishing it from other packaging variants within the same functional family. This series is commonly used in defense and aerospace applications where reliability and performance at millimeter-wave frequencies are critical.

Replacement Considerations

Check for direct substitutes with identical pinouts and electrical specifications. Verify if alternative manufacturers offer comparable Ka-band MMICs with similar gain and noise characteristics. Ensure that any replacement part accommodates the same surface-mount package dimensions.