Pcb Fabrication Notes Pdf

This just isn t good enough if you don t have an accurate schematic then your pcb will most likely end up a mess and take you twice as long as it should.

Pcb fabrication notes pdf. 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. Drawn on loose post it notes with no pin numbers and no order. Pcb design tutorial by david l. 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.

One of the first notes on the drawing should define the class of the pcb. These notes may be supplied in paper form but a gerber for. Note that the resulting boards are still referred to as pcbs despite the fact that they are not printed. The added benefit of this is when you export the gerber as a pdf you can easily refer to the fab notes to understand how many layers and holes your design has.

Yes i play with toys. Fab notes can easily be composed and added to the drawing or imported from a file. Pcb design fabrication guide university of toronto ece 2. Pcb requirements stated clearly from the start.

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. 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. Every note on the fabrication drawing should define something unique about that particular board. Fortunately with the drawing utilities in pcb cad systems today you can easily create your fabrication drawing.

Iit kanpur pcb design guide sheet page 18 of 26 pcb manufacturing steps following are the steps involved in fabrication of pcb. Base material cutting drilling through hole plating layer film generation solder resist film generation. 12 along with all data files. Example of pcb fabrication notes.

Why your standard pcb fabrication notes needs updating.