Pcb Fabrication Notes Example

Example notes can be found above at the end of the fabrication section.

Pcb fabrication notes example. These notes may be supplied in paper form but a gerber for. Fab notes can easily be composed and added to the drawing or imported from a file. One of the first notes on the drawing should define the class of the pcb. Fortunately with the drawing utilities in pcb cad systems today you can easily create your fabrication drawing.

Pcb requirements cost factors 1 manufacturing panel utilization how many pcbs fit on the master panel 2 performance class ipc 6012d class 2 vs 3 3 layer count total number of required cores cores layers 2 2 4 number of lamination cycles each cycle requires lam drill plate etch est 25 per lam cycle 5 design complexity and whether the requirement is standard green. For example i have seen clients with a class 2 assembly have a preference for class 3 solder fillets for one or two through hole placements on their project. By correctly stating all of your pcb requirements from the beginning you can be confident that you will receive an accurate quote with a realistic delivery schedule. Draftsman supports the automated creation of tables for impedance and drill tables and also supports the creation of custom tables.

Example of pcb fabrication notes. The success of any pcb manufacturing project depends on the detailed notes that are included in the fabrication drawing. Your contract manufacturer will thank you. Pcb dimensions this factor really helps a cam in pcb manufacturing to compare a fabrication drawing with the gerbers.

12 along with all data files. Every note on the fabrication drawing should define something unique about that particular board. Typically the design files typically gerber or odb contain the most basic structure and outline of the board design whereas the fabrication drawing tells the manufacturer the specific details about a board that make it unique. Unless otherwise specified or pre aproved.

Here is an example of a fabrication drawing we see often. You start from a blank drawing format that you either pull from a library or generate automatically and then combine this with your design database. Inch dimensions in are the controlling dimensions for the drawing s. Think about the beauty of creating pcb assembly drill and fabrication templates once.

The fabrication drawing to provide the pcb manufacturer with a clear description of the requirements and the limitations of a design the designer should supply the manufacturer with fabrication notes and a fabrication drawing figure 1 18 p.