Gerber data in RS274X format is preferred. Files in the RS274D format require a seperate aperture list with all apertures defined. You will also need to send in a NC Excellon Drill File that contains finished tool sizes, in X & Y coordinates. Below is an example of the gerber files required for a 2-layer design. Some of the more common extensions are in parentheses:
- Top Layer (.GTL, .TOP, .CMP)
- Bottom Layer (.GBL, .BOT)
- Top Silkscreen (.GTO, .SLT)
- Bottom Silkscreen (.GBO, .SLB)
- Top Solder Mask (.GTS, .SMT)
- Bottom Solder Mask (. GBS, .SMB)
- Drill File (.DRD, .DRR)
By default, we will assume that the layers are represented by a top-side view. This means your files we be viewed from the component side looking down.
In order to better serve you and to ensure that your PCB is manufacturered exactly the way you want it, we recommend our customers provide a separate readme file detailing your manufacturing instructions that should include, board dimensions, thickness, tolerances and outline details. Hole sizes with quantity, plating information and tolerances. Copper weight, material type, silkscreen information, and any additional notes or requirements (blind/buried vias, countersink, controlled impedance, etc). We also recommended you provide technical contact information.
We also offer simple design services such as file conversions from schematics, drawings, and a variety of programs (Protel, Altium, etc.) into the Gerber RS274X format which is the standard for professional production.
PCB International will work with you to make sure you get what you need. Please send all inquires to firstname.lastname@example.org.