PRINTED CIRCUIT BOARD
Printed circuit board can be shortly called as PCB . Printed circuit boards are the foundational building block of modern devices. PCB is the electronic board that connects circuit components and provide mechanical support.
Types of PCB :
Based on base material PCB is classified into three types ,
• Single sided PCB
• Double sided PCB
• Multi-layer PCB
Parts of PCB :
Pads : Pads are the location where we will solder the components. Pads have both Inner and outer diameter.
Traces : Traces connect pads together. It is used for wiring the PCB.
Vias : Vias is the pods with holes that have been drilled in PCB. Vias are used to connect the traces of one layer of board to another layer.
Solder mask : Solder mask protect copper traces on outer layers from corrosion . Areas shouldn’t be soldered may be covered with polymer resist solder mask coating .
Components are the actual component to be connected in PCB.
Example : power supply , resistors, transistor, capacitors ,LEDs, etc…
Advantages of PCB :
• Easy to repair.
• Minimal concern on short circuits and wrong wiring.
• Only low volume is required, no need for wires.
• Highly reliable.
Disadvantages of PCB :
• Cannot be updated once it gets printed.
• Etching of circuit boards generate chemicals which are dangerous for the environment.
Printed Circuit Boards are supposed to be made with deep consideration and must be carefully checked at every stage.