CEM3 or FR4 PCB, which is the lightest material?

There is nothing about weight in the substrate datasheets I found. Between CEM-3 or FR4, which is the lightest material ? What is the average weight by surface for CEM-3 boards ?

PCB Design, PCB Materials
November 17, 2023

CEM-3 is lighter than FR4,the average weight is about 3.5KG/sqm. but now most of PCB manufacturers less use CEM-3 material to make PCB,almost use FR4 material.

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

Oliver Smith

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