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Image of printed circuit board with components
Image of printed circuit board with components
Printed circuit boards became popular in the second half of the 20th century. Prior to this, manufacturers directly connected electrical components through wires. Therefore, it is disorganized.PCB was born to solve this problem.
Essentially, a PCB is a set of embedded wires passing through flat pieces of glass fiber. To understand how they work, you need to understand how the manufacturer created them.
During the manufacturing process, the manufacturer stacks the glass fiber sheets and treats them with chemical resin. The resin will bond them together.
Next, the manufacturer will apply a layer of copper on both sides of the fiberglass board. Then they will apply photoresist. Then, the manufacturer will etch the PCB layout pattern that matches the traces on the board. After that, they use ultraviolet light to harden and dry the board.
The completely assembled printed circuit board is moved to the reflow oven machine
After assembly, the printed circuit board is moved to the reflow soldering machine
Next, the manufacturer will clean the circuit board with warm water, which will wash away the uncovered area, leaving copper traces. These tracks will serve as the basis for the appearance of the PCB after the copper etching process.
According to the specifications and design of the circuit board, the manufacturer will drill mounting holes, through holes and through holes for connections and components.
Nevertheless, since the PCB is just a set of electrical connections on the substrate, you don't need any fancy manufacturing process to make a simple process. We will show you how to do it in the rest of this guide.
