Have you ever wondered who invented the printed circuit board (PCB) and why it is green? In this article, we will provide you with some awesome facts that we learned about PCBs and PCB fabrication in the many years that we have been working as a PCB manufacturer.
Who Invented PCB?
An Austrian inventor named Paul Eisler is generally credited for the invention of the PCB, but the development that paved the way for the invention can be tracked as far back as the 1890s. In 1936, Eisler created the first PCB while working on a radio set. The popularity of PCBs started in the 1950s when they began seeing widespread use.
Why is PCB Green?
The green that we see on the board is actually the solder mask’s color that appears through the glass. However, there are some speculations with regard to the beginning of the use of the color green.
Some think that when the American military used the PCBs, green was the standard of regulation, and it expanded from there. There was also a speculation that in PCB fabrication, green was the color of the earliest solder mask resins, which is why we still use green because of the norm, even though we do not use these materials anymore. Today, a solder mark could be made from any color, but green has always worked well and it makes our engineers easily notice faults in the traces, so a lot of PCB manufacturers, including us, continue to use it.
PCBs are All Over the Place
You may not be even aware of it, but PCBs are everywhere. Perhaps you are so close right now to a device that uses a PCB. You are possibly reading this article from something that has a PCB. Click this website pcbnet.com for more details. Printed circuit boards have become a truly essential part of modern technology, and while the PCB technology itself is developing all the time, it does not seem like another invention is going to replace them in the near future.
Silkscreen is the white engravings on top of the PCB solder mask. It is on the component side of the PCB to identify the component parts and other information about the board. The white text could be printed using silkscreen, but we can also print it digitally using ink-jet printers.
Surface Mount Technology
SMT or surface mount technology is the most common technique in PCB fabrication. In the 1980s, SMT became popularly used and quickly took the place of the through-hole method, which sustained many errors and had been slow. In the through-hole method, the component parts had to be connected to the PCB by inserting leads into the holes, while SMT attaches them onto pads on the surface of the board.
PCB Uses Traces and Not Wires
Electronic devices usually use wires to transmit energy, but PCBs do not use the same norm. Rather than wires to transfer electrons, PCBs use copper traces. Replacing wires for copper traces allows the board to be much smaller because the flat traces use less space. This also means that we can do the PCB fabrication using through-hole technology because the copper could easily transmit through a hole in the PCB.
There Are Many Possible Components
There are possibly more component parts used in manufacturing PCBs than you have ever though, and each of them has its own unique properties. This includes capacitors, transistors, batteries, resistors, transformers, inductors, diodes, fuses, potentiometers, relays, and so on.
PCB Technology Changes All The Time
PCB technology has greatly changed since Paul Eisler used it in 1936. PCBs now are much more efficient to build, faster, and smaller, and the technology is changing all the time. Currently, scientists are working to create biodegradable PCBs. Likewise, developing the material ‘graphene’ can change how electronic devices work.
PCBs Are Getting Smaller
Manufacturers have to make smaller and smaller electronic devices. This influences PCB fabrication and the end-product has to be smaller as well. This reduction in PCB size is set to go on.