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What is a double sided pcb board?
A double sided pcb board is a printed circuit board with two copper layers on the top and bottom sides. Therefore, there are copper pads and copper traces on both sides of the PCB, and the two copper layers are connected by plated through holes. Inner layers do not exist in double sided pcb boards.
Double sided pcb boards provide customers with a low-cost solution for electronic devices. Double-sided printed circuit boards, components can be placed on only one side or on both sides. We can create complexity on double-sided PCBs according to our design.
double sided pcb board
Different types of double sided pcb boards:
Rigid double-sided PCB: This is the most common double-sided PCB. It is usually made of FR4 which is the best choice for high electrical performance and low cost.
Flexible double-sided PCB: It is usually made of polyimide which is a commonly used flexible material with good flexibility and low cost, and is widely used in electronic products that need to be lightweight.
Rigid-flexible double-sided PCB: This board is a finished circuit board that combines the rigid printed circuit board and the flexible printed circuit board and has the characteristics of both flexibility and rigidity.
Metal Core Double-Sided PCB: The substrate of this board is made of metal materials such as copper and aluminum, so the heat dissipation is better and it is usually suitable for the LED industry.
Advantages of double sided pcb boards
Low cost: Double-sided PCB is a low-cost solution for double-sided PCB manufacturing. Double-sided PCB boards can optimize the size of the circuit board at a low cost.
Easy to produce: Double-sided PCB boards are easier to produce compared to multi-layer PCBs because no inner layers and lamination are required.
Better working performance than single-layer boards: Sometimes, double-sided PCBs can be used as single-sided PCBs. Therefore, it is better than building single-sided PCBs.
Flexibility: Most customers prefer double-sided PCBs because of its flexibility in use, and it is the most widely used printed circuit board.
Applications of double sided pcb board
Consumer electronics: Double sided pcb boards are widely used in consumer electronics because of their low cost. Such as TV sets, game consoles, digital cameras, audio equipment, printers and fax machines, home appliances.
Power Industry: Double sided pcb board has a structure that makes it easy to place parts, so it is used in LED boards, power circuits, relay circuits, power conversion circuits, etc.
Automotive: In the automotive industry, Double sided pcb boards are used in vehicle control systems, engine management systems, and other automotive applications. They are heat-resistant and can adapt to the temperature changes typical in the automotive environment.
Telecommunications: Double sided pcb boards are essential in telecommunications infrastructure, including routers, switches, and network equipment. They support high-speed data transmission and signal processing, so they are indispensable in telecommunications systems.
Medical Devices: Medical devices rely on double sided pcb boards for applications such as patient monitoring systems, diagnostic equipment, and other medical instruments. These boards ensure reliable performance and precise control in healthcare environments.
double sided pcb board
Double sided pcb boards manufacturing process
DFM Check: DFM is a verification process for manufacturing circuit boards. During this process, DFM engineers use specific software to verify copper, mask, screen printing, and drilling, and provide information on problems related to the double-sided PCB manufacturing process. If there are problems with the manufacturing design, a DFM report is provided to the customer. The DFM report includes all the manufacturing related issues, manufacturing specifications, hole size, trace to trace spacing, trace to pad spacing, pad to pad spacing, pad size, blind via size, buried via size, via filling, etc. So, it is good for all of us to know if there is any problem with our design and it is also easy for the production floor.
Software Penalty Process: The penalty process is used to determine how many ups are set in our standard panel for production use. Then it gets different penalty outputs like core scaling, maskless output, drawing output, drill output, and etching test. After all outputs, these raw data will go to the production floor to manufacture the circuit board based on these raw data.
Panel Cutting: First, when the material arrives at the production floor from the stock, it is a large sheet of 41*49 inches in size. So, we need to cut the PCB material according to the board thickness requirement. Most suppliers use FR4 and 370HR materials for standard double-sided PCBs because their cost is very low.
Drilling: In this stage, the PCB is fixed with a fixture for precise drilling, and then the drilling program is loaded into the drilling machine, which drills holes according to the PCB drilling layer. Sometimes, it is necessary to fill holes, blind holes, buried holes, etc. At this time, drilling is carried out according to special processes.
Copper plating: There is a large copper plating tank in the production workshop among double sided pcb boards. Copper plating is applied to the surface of the PCB. Therefore, it increases the board thickness and provides copper connections for the layers with surface pads. Holes have been drilled on the PCB board for connections between layers. Copper plating makes the PCB strong and durable.