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 ?

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

What Others Are Asking

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 ?

Oliver Smith November 17, 2023

Is there a reason an 0805 resistor would have a different land pattern than an 0805 capacitor?

My PCB design software comes with some libraries that include some common components, like chip resistors and capacitors. I have noticed, however, that the footprint land pattern for the 0805 resistor is not identical to the 0805 capacitor. Is there a “best standard”? IPC-7351, IPC-SM-782, or what?

Oliver Smith December 12, 2023

How can I tell whether an SMT/SMD capacitor is oriented with plates horizontal or vertical?

Is there an industry standard for showing how plates in the SMT cap are oriented? How can you tell if it is a square-rectanguloid instead of being flattish in one dimension?

Oliver Smith November 3, 2023

CEM3 or FR4 PCB, which is the lightest material?

Oliver Smith

Oliver Smith

What Others Are Asking

CEM3 or FR4 PCB, which is the lightest material?

Is there a reason an 0805 resistor would have a different land pattern than an 0805 capacitor?

How can I tell whether an SMT/SMD capacitor is oriented with plates horizontal or vertical?

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