Gerber files are the industry’s preferred file format for manufacturing printed circuit boards. Most PCB design software has the ability to output the design data in Gerber format to represent a design’s copper layer images, solder mask, legend, and drill and route data accurately. But, in the output process it can be easy to unintentionally exclude important data required for manufacturing, or output data that contains design rule violations such as insufficient solder mask clearance or deficient silkscreen line width.
Gerber File Manufacturability Check
Advanced Circuits’ online tool, FreeDFM, offers a quick and easy way to check your Gerber files prior to submitting your order for manufacturing. The free tool ensures that all of the design rules are satisfied and all required data is included in your Gerber files. Checking your files can save you time by avoiding CAM holds after your order has been placed and it can save you money making sure your printed circuit boards are produced exactly as intended the first time.
How to Use FreeDFM
To use Advanced Circuits’ FreeDFM software, make sure that your Gerber files are placed in a single folder and compressed as a .Zip. Upload your .Zip file to FreeDFM and provide the email address where you would like to receive the detailed report identifying any possible issues found.
Next, our FreeDFM software will automatically identify the files based on the standard naming conventions of most EDA software packages. You may also manually identify any of the files if the system was not able to match the file extension. Click here to view a list of the most common Gerber file extensions file naming conventions.
Once you submit your file, Advanced Circuits’ FreeDFM software will perform the automated checks for your PCB design and send a detailed report outlining any possible manufacturability issues found in your Gerber files. The report is sent directly to your inbox within minutes and it will contain the location and description of the issues along with a discount code for up to $100 off your next PCB fabrication order.
Below is an example of FreeDFM’s Report:
What Does FreeDFM Check For in Your Gerber Files?
Each time you submit Gerber files to FreeDFM, the software will perform all of the following checks:
Complete Gerber Files in .ZIP Folder
- Gerber file for each copper layer
- Gerber file for each soldermask layer
- Gerber file for each silkscreen layer
- Excellon or Gerber drill file
Inner Plane Layers
- Spacing
- Trace width
- Annular ring
- Inner clearance (drill to feature)
- Thermal reduction
Outer Layers
- Spacing
- Trace width
- Annular ring
Drill
- Double hits
- Missing hits
Inner Signal Layers
- Spacing
- Trace width
- Annular ring
- Inner clearance (drill to feature)
Soldermask
- Undersized clearances
- Missing clearances
Silkscreen
- Line width