Testing the Quality of the PCB Board

Share This Post

PCBs are initially fabricated with the use of two types of software. Computer Aided Design (CAD) software is used to design the electronic schematic of the circuit to be produced. After the schematic is designed, Computer Aided Manufacturing (CAM) software is used by engineers to produce the PCB prototype. To get high quality Printed Circuit Board Assembly then you can contact China pcb manufacturer through http://www.joga-pcba.com/.

Once the material was selected, the primary process would be to apply a coat of aluminum to the whole board.  The circuit design is then going to be printed onto the plank by a photo sensitive procedure.  Afterward, a photograph prototyping process is going to be used to ensure all of the aluminum that’s not a portion of this circuit design is going to be etched outside or taken out of the board.  The subsequent aluminum generates the traces or paths of this PCB circuit.  To join with the circuit hints, two procedures are all used.

An mechanical grinding procedure may utilize CNC machines to clear away the unnecessary aluminum from the plank.  Afterward, an etch-resistant, silkscreen, printing process is employed to pay for the regions at which traces needs to exist. Only at that point from the PCB manufacturing process, that the PCB board comprises aluminum traces with no circuit components.

EMS--4

To mount the components, holes have to be drilled at the areas at which the electric and electronic equipment parts are set on the plank.  The holes have been drilled using some distinctive sort of drill piece made from Tungsten Carbide.

Once the holes have been drilled, then hollow rivets are added to them or they’re coated by an electroplating method, which creates the electric connection between the layers of their plank.  A masking cloth is subsequently employed to coat the whole PCB with the exclusion of these pads and also the holes.   The last step from the PCB manufacturing procedure would be to screen printing the plank therefore the legend look in their proper locations.

Some PCB manufacturers do not test their boards before they are shipped, which can lead to problems at the customer’s location. So, quality testing is a critical process of the PCB fabrication process. Testing ensures the PCB boards are in proper working condition prior to component placement.

Tags : | | | | | |