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

How do PCB manufacturers prevent solder from entering vias during wave soldering?

I have some PCBs that were wave soldered but the vias still remain open, they are not filled nor plugged form what I can see. I do not see any solder on the annular rings of the vias either. How do they go about doing so?

Oliver Smith November 3, 2023

How do you hold SMD part in place while soldering?

I go through this every time I have PCBs I need to populate with SMD parts, and this has become more an issue as pin spacings have gotten tighter, and my hands have become less steady with age. How do you hold SMD part in place while soldering?

Oliver Smith November 22, 2023

Is there a surface-mount component I can put on a pad, that simply has another pad on top that I can solder something on to?

We found that edge-mounting a TO-Can package to a PCB will really save a lot on manufacturing. However, it comes with fairly long through-hole pins that are taking up too much space to reach the pads. Any suggestion?

Oliver Smith December 4, 2023

CEM3 or FR4 PCB, which is the lightest material?

Oliver Smith

Oliver Smith

What Others Are Asking

How do PCB manufacturers prevent solder from entering vias during wave soldering?

How do you hold SMD part in place while soldering?

Is there a surface-mount component I can put on a pad, that simply has another pad on top that I can solder something on to?

Read Detailed Advice From Blog Articles