Hello, friends, I hope all of you are enjoying your life. In today’s tutorial, we will have a look at Double Sided PCB Board. PCB stands for printed circuit board, it is a thinner chip constructed by epoxy, fiberglass, or some other laminated substance. On this circuitry board, there are numerous paths are manufactured that for current movement and numerous components for any circuitry can be assembled on these conductive paths. Components like resistances, transistors, capacitors or some other ICs can be assembled on this board.
This board has lots of practical applications in electronic devices and projects, like computers, laptops, mobiles, and calculators, are consist of this circuit board, An computer example of PCB is its motherboard on which different components are assembled. There are numerous types of PCB according to construction and uses like, single-sided, multilayer, rigid, rigid-flex, flexible PCB, etc. In today’s post, we will have a look double-sided its working construction, applications, advantages, and disadvantages. So let’s get started with what is double-sided PCB board.
Double-Sided PCB Board
- The double-sided printed circuit board is also defined as a double-layer board as it provides on both sides conductive paths for the assembly of components.
- On this circuit board, both sides are covered or coated with current-carrying (conductive) material like copper.
- The main feature of this board over the single-layer board is that on this board there is a hole through which components of one side can be connected with the other side.
- For the connection of components on this module, there are 2 methods used first one is surface mounted and the second one is through hole. Both of these have their advantages and disadvantages and can be used according to the user’s requirements.
- In the through-hole connection technique, the small wire is passed through holes and joins different components.
- In the surface-mounted technique, there are no separate wires used to link components but in this method on the surface of the board wire is already soldered to provide conductive paths, this method uses less space for component assembly and decreases the weight of the board.
Construction of Double Layer PCB
- The construction of this circuit board is similar to the single-layer circuit board, its construction is described here in detail.
- In this circuit substrate is manufactured by glass fiber or epoxy resins, the type of base material relies on the rigidity and flexibility of the board.
- In this double layer, PCB over base substance copper lamination is done to provide conductive paths for components.
- To protect the environment both sides of the circuit board comprise a solder mask over the copper covering.
- For an easy understanding of the circuit board for new users, there are different symbols of components that are already designed onboard over the silkscreen that is above the solder mask.
Double-sided PCB Board Applications
- Due to the simple design and ease of handling some practical applications of this board are described here.
- the use of this board in technical devices is also employed in medical devices like X-ray machines, CT scans, and pacemakers consist of this circuit board.
- In industries, this board also has numerous applications in different machines and instruments.
- Different converters like analog to digital or digital to analog use printed circuit boards for their circuit assembly.
- Different control relays are also comprised of this Pcb.
- In different power converter circuits, it is used.
- In HVAC (heating, ventilation, and air conditioning) this board is also used.
- Different lighting devices like light-emitting diodes consist of circuit boars.
- Differed power supplier circuits also consist of these PCB boards.
- Voltage regulators also consist of this board.
- UPS is a common useable device in our home and offices it also uses PCB for circuit assembly.
- Different traffic control circuits also comprise of this module.
- Vending machines also use this PCB board.
- Your computer motherboard is also made with this printed circuit board.
- Vending machines also comprise these boards.
- Line reactor circuitry also uses this board.
- Printers also comprise this board.
- Your cell phone also consists of this board.
- Different amplifier circuits also consist of this board.
How are Double-Sided PCBs Made?
- First of all desing of the PCB board made with the use of different software
- After completion of the design PCB layout is made. The PCB layout is printed on paper.
- This material is selected for board creation. The selection of materials is based on design. normally used material for PCB substrate is FR4 some boards use high-speed and high-frequency PCBs.
- In this steep cutting of copper lade laminate is done according to size need. CCLs are thin layers of copper foil laminated on the non conductive substrate. The accuracy in cutting provides accurate measurements for further process
- Now holes are drilled in CCL to make sure proper vias and components holes. These holes are made based on design and then help to connect different layers of boards
- Holes made in the previous step face electroless copper deposition. That comes with coating holes at the inner side with the use of thin copper layers to make a conductive path between the top and lower layers.
- In this step, photoresist material is used on the surface of CCL. Circuti pattern is applied on the photoresist with the help of a UV light-sensitive mask. When light strikes chemical changes occur. make a pattern for the next process.
- A thin layer of copper electroplated on the CCL exposed part and circuit pattern are reinforced. This copper layer increases the conductivity of traces
- It is the etching step where doubled side PCB is made with accuracy and chemical process link for refining complicated circuit desing on copper clad laminte. In pattern plating that comes with electroplating extra copper layer is applied on exposed parts board coated with photoresist material.
- This automatic optical inspection is performed to check accuracy and reliability. The circuit pattern is etched on copper-clad laminate and PCB is put in for AOI inspection which is the latest technique for finding faults.
- At last flying probe testing is performed to check the accurate working of the board.
Advantages of Double-Sided PCB Board
- It is a basic PCB board that can easily made.
- It has copper layers on both sides for making the circuit.
- both side copper layers help to connect a larger number of components on the board
- It is a flexible nature board
- that provides high-circuit flexibility
- It has a smaller size of the board due to both side layer configuration
- It is a low-cost board
- that helps to make complex designs
Single-Sided vs. Double-Sided vs Multilayer PCBs
Single-Sided PCBs
The single-sided board is also called single-layer PCBs and this board has single layers where conductive layers are made. So single side is used for component connections low-cost projects and circuit creation.
Different materials were used for the creation of these boards such as paper-reinforced phenolic resin of copper foil and glass fiber-reinforced resin. Single-sided boards are commonly made and used.
Double-Sided PCBs
The double side boards are almost the same as single-sided but the difference is that the double side has conductive layers on both sides. So a larger number of components are connected on boths sides for circuit design. As a result, it provides high density without the use of point ot point soldering. Double-sided boards are difficult to make as compared to single-sided PCBs.
These boards are commonly used for manufacturing complex circuit designs.
it is used in LED lighting systems, car dashboards, vending machines, amplifiers,
Multilayer PCBs
Multilayer boards are complicated and structured and come with 3 or more layers. All layers are conductive layers and components are connected.
The structure of multiple layers is such as some material used like single or double-sided board then etching of internal core prepreg layers is applied and that helps to combine layers in a single design
These boards are costly compared to the other two boards
its common uses are
Fiber optics, scientific, space equipment, heart monitors, smartphones, GPS systems, atomic accelerators,
Related Posts
- Aluminum PCB (Printed Circuit Board)
- Multilayer PCB (Printed Circuit Board)
- Rigid PCB (Printed Circuit Board)
- Flex PCB (Printed Circuit Board)
- High Frequency PCB (Printed Circuit Board)
- Single Sided PCB (Printed Circuit Board)
- Rigid-Flex PCB (Printed Circuit Board)
- Double sided PCB (Printed Circuit Board)
So friends that is the detailed post on the double-sided post I have written and everything related to this module with the details. If you have any questions about it ask in comments. See you in the next tutorial.
