Creating a printed circuit board could be costly if you don’t know how to really do it. The designer needs to know how to go about making PCBs from reading the guidelines to quality control, and then testing the printed circuit boards which is the final step. Click here Pcbnet for more idea about PCBs. If you follow these basic guidelines we’ve listed below, you would be able to reduce the cost of your PCB and be able to reduce or minimize errors.
Here Are The Guidelines:
1. A printed circuit board is usually rectangular in shape, but you can also create printed circuit boards with different shapes like polygons. When creating a board, start with a .05” grid. The lower left corner should start with 0,0.
2. Stick parts on a .05” grid. Follow this rule all the time.
3. If you’re using LED, always label it. Example things to be labeled: status, power, lock, D4, etc.)
4. It’s important to group essential components together.
5. 7mil is the minimum annual ring size, while 15 mil is the minimum drill size. 8 mil is still acceptable though.
6. Power lines should have thicker traces to make it easier to locate.
7. Always go with the 45 degree corners. As much as possible, avoid 90 degree corners.
8. If you know how to really work your way on a printed circuit board and you want to break down complex designs into smaller bits, add color notes into it.
9. A reference designator, like a pin should always be used. Always use a solder mask when adding a designator.
10. All designators would need a silkscreen indicator that shows all the dimensions of the printed circuit boards.
These are some of the guidelines that you need to follow should you plan to create your own printed circuit board. It’s quite complicated, but not really difficult to follow.
So how do you actually make printed circuit boards?
Designing one is a long process. It will require a lot of time, energy, effort, focus, and money. If the designer knows CAD ( Computer Aided Design), it will be a lot easier for him to design printed circuit boards.
The first step would be to determine what kind of electronic device you will be working with. If it’s a simple device then you will need a single- layer PCB. On the other hand, if you’re working with complicated device such as a computer, you will need a multi-layer PCB. More materials will be used for this particular design.
As soon as you have already figured it out, check online if there are designs that you can follow for the PCB. Most manufacturers can offer theirs for free so long as you don’t do any modification on them. Otherwise, you would have to create your own design.
Next step is to decide whether you will be using the newest technology which is the Surface Mount, or you would go for the older technology which is the Through Hole Technology.
To make a PCB, you need to gather all your raw materials first. Before you assemble all the materials, you need to make sure the place is clean. Otherwise, the PCB will be contaminated.
A glass fiber is the most common substrate used in PCBs. You can also use the cheaper ones for most household devices. If you’re not really selling the device and it’s not too complicated, go with the more affordable substrate.
As soon as you’ve decided on the substrate, the epoxy resin which acts like an adhesive is mixed with the copper oil. To keep panels from moving, they are staked together and holes are drilled out. Once done, they then etch the circuit pattern to the panel. The plating is done with tin- lead, nickel then with gold. The last step would be the quality control. We’ll tell you something important though – this process takes time as the PCB still need to undergo various quality control tests before it is tested for functionality.