The History of Printed Circuit Boards
A wood material patented by William H. Mason called Masonite made up Printed Circuit Boards. Masonite is a wood that has gone through pressure molding and steam treatment. Bakelite, an early type of plastic also made up some of the very first Printed Circuit Boards. Finally, cardboard even made up some of the original boards.
In order to rivet flat wires onto boards holes needed to be drilled. These riveted wires created the first primitive form of the traces we know today. Therefore, using rivets as the spaces for component placement.
In the beginning, Printed Circuit Boards were only one-sided. Due to the components going through the boards by way of the rivets, there was no way to have circuitry on both sides. Circuit boards made it possible to condense electronic components into one place rather than have wires running all through an electronic device.
Modern Day Printed Circuit Boards
After the initial design of the single-sided circuit board, there were new developments. These new developments were to drill holes in the boards and then plate those holes with copper. The result of this copper plating is that you can now use both sides of the board.
Much like the circuit boards of today, there was printing on the boards of the past. They were able to use a printing press to place the images of the drawing pattern onto a zinc plate with a copper foil and then transfer those images onto the boards. This was the early stages of the pattern transfers that we know today.
Early on in the circuit board development, they did not solder dip their boards. However, in modern designs, solder dipping or wave soldering is very common. By using solder circuit boards, manufacturers can ensure the connections between the components and boards.
Here is a helpful video from Linus at Techquickie explaining how PCBs work:
For More Information: Go to our Circuit Board page.