Category: Services

How To Draw The Best Layout For PCB Fabrication

Over the years, our clients have relied on our ability to produce high standard printed circuit boards (PCBs). In our website, customers can receive their PCB fabrication quotes a few minutes after uploading their bill of materials. We can find whatever you need at a low cost as long as you can provide specific details of your PCB.

PCBBill Of Materials

The parts attached on the board should be detailed on a list called a bill of materials (BOM). In this list, every part or material to be used must be provided with its unique reference and description. For example, the reference designator of resistor is “R1”. All necessary information must be included on the list to help us easily find the tools you need.

Data Sheets

As a circuit designer, you must use a data sheet provided by manufacturers to select specific parts for the board. Usually, you can search for data sheets online. If the information in the data sheet is incomplete, you should be able to provide a sample part to measure and define the details yourself. This information would not be as accurate as the manufacturer’s information, but it is better than just guessing.

One-Side Laminated

One layer of copper is used in a one-side laminated board. Usually, the wired components are mounted to one side of the board by inserting, soldering, and clipping the leads through the holes.

Both Sides Laminated

Two layers of copper are used for boards with double lamination. In this board, the components are attached from both sides of the board. This board uses conventional circuitry and is generally much easier to detach and repair.

Multiple Layer

A board with more than a couple of copper layers uses a sandwich PCB fabrication. This type of board is more costly than the one-sided and double-sided lamination because each layer would add up to the price. The extra layers are often used for complicated circuitry and they can distribute power more effectively.

PCB Layout

Anyone can draw a PCB layout manually or with the use of Electronic-Computer Aided Design (ECAD) software. Manual drawing is often used in easy-to-create PCBs while ECAD is used for PCBs with more complex designs.

Simple Tips When Drawing

It is always advisable to place the board parts on the top side of the drawing. This would make it easier for us to identify each part.
1. Place all the components in their specific locations, including switches, connectors, mounting holes, LEDs and heat sinks.
2. Minimize the trace lengths.
3. Make sure to place connected parts next to each other. This would help you draw traces easier.
4. Leave enough space for traces in between ICs.
Always double check the drawing to make sure that all traces are in the correct places. Give us a call so we can provide you more information about drawing a layout.

Fabrication Drawing

The PCB fabrication drawing must provide the exact dimensions of holes on the board. Each hole must be identified in size with different symbols. We would use these details to ensure that the board is created according to your preferences.

Drawing Tools

PCB1. Pen – A pen is not really advisable but you can use it for simple PCB drawings. Make sure to use a permanent marker with a black ink.
2. Pen Plotter – You would need a pen with special ink and grooved tips to provide an acceptable drawing. Always clean the special pen as it gets easily clogged.
3. Ink-jet Printer – An ink-jet printer is cheap but don’t expect the same high quality that you could get from a laser printer. It is worth trying to print on paper but the main problem is that it doesn’t produce a quality black color.
4. Laser Printer – It produces the best quality of drawing. With the correct setting, you would be able to get a consistent line width and spacing.
We highly rely on your layout. Remember that we can only provide the best PCB fabrication results if you could give us the essential details to create your board.