Currently, PCBs have been very developed and successful in meeting all the essential needs of electronic devices to help fit components to even the smallest extent.
Let’s find out more clearly what types of PCB boards are through the article below.
What is PCB Board Definition?
PCB commonly known as Printed Circuit Board, is a board that consists of many layers and not conductive.
In particular, all the electronic components are connected together on a circuit board and it also has a base to support the bottom.
If there is no PCB, the components will be connected together by a type of wire, increasing the complexity and low reliability. Therefore, it is not possible to create a large circuit board like a motherboard.
Technology to Create Printed Circuits
With the most popular technology and often associated with the name PCB, it is the fabrication of the board with copper conductive circuits on a hard panel insulated with bakelite or possibly a high-quality FR-4 substrate.
(Flame Retardant 4) is colloquially known as “fip wood”.
Furthermore, the original circuit board will be an insulating substrate coated with copper, so that the line image is drawn first and also presented to the plain layer with a printing process, possibly in print style, photo or screen printing, and finally create a water-proof overlay.
This is followed by etching or even breaking away the unused copper layer and the rest of the veins.
Popular Types of PCB Circuits
Currently, there are several types of PCBs that are very popularly used to make printed circuits, and also depending on the design and application; the manufacturer will choose the most suitable PCB types.
1 Layer PCB:
Single Layer PCB
This type of circuit is simple and is used a lot because of the simple design process, easy to fabricate.
A part of the printed circuit PCB face will be coated with any electrical material.
Copper is often the conductive material commonly used in PCB circuits because this metal has good electrical conductivity properties and is cheap.
With 1 layer PCB, the components will be connected together and will be soldering.
Double Layer PCB
With this type of circuit, conductive materials like copper will be coated on both sides, which is the top and bottom of the board.
This type of circuit will save a lot of costs and help reduce the size of the board.
Single Layer PCB
We can use it, the circuit will have a minimum of 3 copper conductive layers.
The layer of circuit adhesive in the middle of the layers will help insulate and insulate so that heat generated during operation will not cause damage to the components in the circuit.
This type of PCB, used in complex circuits requires compactness in size.
Made from solid materials. Rigid PCB also comes in different coatings such as 1, 2, and multilayer.
This type of circuit cannot be bent so it is commonly referred to as a hard PCB.
With durability, along with its long life, this type of circuit is often used a lot in computer parts.
Also known as Flex circuit, this circuit is made up of flexible materials.
This is known to be the type of PCB circuit that applies to complex applications.
The circuit is often used in making LCD screens, solar cells, cell phones.
Flexible – Rigid PCB:
This is a type of circuit combined with flexible and rigid PCBs. It is commonly used as converter cards in some electronic devices such as cell phones, cameras, …
There are also some types of circuits such as piercing PCBs and surface mounting PCBs are also used a lot in electronic circuits.
Currently, with the development of technology in the use of circuit design software is no longer a strange thing.
Printed Circuit Boards (PCB’s)
It is without a doubt the most refined shape and the most reliable finish of all.
On the contrary, it calls for a more laborious development. There are easy-sided and double-sided plates. As you may have guessed, it is related to which of the faces it carries copper.
Whether they are easy or double-sided, there are also different types of plates.
In relation to the material of which the plate is made, we have the possibility of distinguishing three fundamental types:
The most used is the fiberglass type, due to its quality and economy.
The Bakelite is clearly in recession, as it is more fragile than the others and of poorer quality.
What is PCB Teflon
The PCB Teflon is really good, but also very expensive. They are of high mechanical resistance, and the best thing is, they do not have that inclination to absorb moisture that the other types have (hygroscopic) and that, given the short distances between track and track, can cause some undesirable conductivity problem.
On the other hand, Teflon is an optimal dielectric, which means that it is an optimal insulator.
Not in vain is it used as an insulator in conductors of some quality.
The fiberglass ones are the most used, since they give good mechanical resistance and insulation, and are subjectively cheap.
In relation to the development of obtaining the tracks, we have the possibility of dividing the plates into two more types:
- Normal plate
- Photosensitive plate
To get the copper tracks, you have to attack the plate with the correct substances, which will take care of removing the copper part that is not part of the tracks.
This is achieved by protecting these parts from corrosion. For this, remarkable inks, varnishes or adhesives are used.
The notable inks are the indelible or persistent ink markers, type “lumocolor” or similar, which are easy to find in stationeries or electronics stores.
The varnishes belong to the photosensitive plates, and the adhesives are supplied with the appearance of stickers in the shape of pads and tracks of different sizes and thicknesses.
The usual plate is one where the track is drawn directly on the copper.
We have the possibility of drawing with an indelible marker, or by means of correct stickers.
The photosensitive plate has a varnish that is sensitive to light, which is impressed by means of an insulator or some other correct light source.
Commonly, it is more sensitive to the light that UVA (ultraviolet type A) has inside than the sun’s rays have.
We must also bear in mind that insolation can be done by exposing it to sunlight, but it has the problem of its imprecision since it will depend on the angle of incidence (time of day), the weather (clouds), the season of the year where we meet, in this way as geographic latitude.
The printed circuit, PCB, or electronic card is widely used, being used in electronic, mechatronics, electrical designs, explorations, production and manufacturing, advancement of innovative products.
At present, all products have electronic cards with different shapes, properties, sizes, elements, and colors inside.