You don't necessarily know all these things about PCBS....

1. Why is PCBs green?

Why is most PCBS green? That's the basic question. In fact, the circuit board itself is brown, and the green we see is the solder block. The solder mask is not always green, but green is the most common color. It is impossible to confirm why the green layer was used, but there are several rumors. Some say it is a requirement of former military application, which is still used today; Some say it was the most popular color for resins and hardeners at the time. The laminates were also green, and all PCB layouts used them; Others say it's because the human eye reacts more to the color green. In short, green has been around for a long time and is here to stay, although some companies allow users to choose other colors they want.

2. Who invented PCB?

The origins of PCBs, which date back to the 1890s, were designed to make it easier to connect many components. But the real inventor of the PCB was Austrian inventor Paul Eisler. In Austria, Paul learned about the use of printing technology, and he wanted to see if he could use the printing process to put all the components on one insulating board, instead of using wires to manually connect the components. In 1936, he developed his own PCB to make a radio, but it wasn't until the 1950s that PCBs began to gain popularity.

3. How is PCB designed now?

To make a PCB, the layout of the PCB must first be designed, which is usually done through CAD(computer-aided design). CAD is used to draw schematics and design the layout of the PCB, which can detect possible errors in advance before the PCB is manufactured. After testing and checking that all components on the PCB are correctly wired and positioned, the PCB is manufactured according to the layout

4. What is SMT?

You may sometimes hear the word SMT in PCB manufacturing. SMT, an acronym for Surface Mount technology, is the use of automatic mechanization to attach components to a printed circuit board, and is the most commonly used technique in PCB manufacturing. In PCB manufacturing, the through-hole method was originally used, but there were many errors, so SMT slowly replaced the through-hole method.

5. No wires on the PCB?

What beginners may not know is that PCBs don't actually use wires to connect. This is interesting because most electrical equipment and technology require wires to be connected. There are no wires in the PCB. Instead, copper wires are used to lead current through the entire device and connect all components. It would take up too much space if wires were used to connect, but fortunately, we can now make extremely complex PCB boards that don't need wires to connect at all, saving a lot of space.

6. What are the white printed lines on the PCB?

We often see white printed lines on PCBs. Have you ever wondered what they are? These white print lines are actually used to mark components and print important PCB information onto the board, called "screen printing". It can be screen-printed on a board or printed on a PCB using an inkjet printer.

7. There are many components on PCB

In terms of complexity, there are many separate components on PCB, each of which has a different function, constituting the overall function of PCB. Components on a PCB include resistors, potentiometers, capacitors, inductors, relays, batteries, fuses, transformers, diodes, transistors, LEDs, switches, etc.

8. PCBs are everywhere,

From the smallest electronic devices like watches and cell phones to mainframe computers and processors. All electrical equipment uses PCBs because they save energy, space and can be used in a variety of applications.

9. PCBs are getting smaller and smaller

As manufacturing processes become more sophisticated, developers are designing PCBs smaller and smaller in order to save space. Today's electronic devices are correspondingly getting smaller. Smaller and more powerful, this is the trend of electronic devices.

10. PCB never stops developing

PCBs are getting better every day, getting smaller, faster, more efficient, and more reliable. They never stop developing. Technicians design and build PCBs to make them as flexible and easy to repair as possible. For example, many scientists are working on making PCBs biodegradable to reduce environmental pollution. In addition, new materials are emerging to make PCBs even better.