What is Cavity PCB?

Defined as a hole (Cutouts ) in the PCB going from the outer copper layer to an inner copper layer, but not completely through the PCB.

The use of cavities in a PCB as a method to reduce the component height or to increase component clearances is a viable technology. SMT testing of the cavity boards assembled with the 0.4mm pitch BGA packages at multiple cavity depths has demonstrated that PCBs can be successfully paste printed, assembled, and re-flowed in the same multi-level processes with the existing equipment capability.

Applications / Industries

Cavities are required for antenna purposes as well component assembly in the following industries: Microwave, Telecommunications, and Automotive.

 

Some examples :

cavity-pcb-Example

Cavity PCB-HT

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