BOARD DATA  

CircuitCAM Data Requirements
In additional to a bill of materials (refer to Section 1), Key Electronics will request one of the following groups of board design data. The preferred data format is the native CAD file. This data can import directly into CircuitCAM and ensures accurate component, placement, and board data. At times, this data is not available and the other data format preferred is Gerber data. As with bills of material, more board data is always beneficial.

NATIVE CAD
Summary Information of Data Sources



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GERBER

Summary Information



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BOARD DESIGN DATA

All CAD systems output Gerber data. Therefore, you can be assured that at least this data has been available at some time in the product’s life cycle. The photo plotters used to fabricate bare boards are driven by this data exclusively, and therefore if a bare board exists, someone had access to the Gerber data at one time.

Please provide at least one of the sets of data listed below. (The sets are listed in order of preference, 1 being most preferred):

Set 1: Any of the Listed Native CAD File or 3rd Party CIM Software Application Import Formats (See Chart above)

Set 2: Gerber RS-274X Data Files
Gerber Files to include (following layers required – all layers are beneficial):

  • Top Mask Layer
  • Top Silkscreen Layer
  • Bottom Mask Layer (if applicable)
  • Bottom Silkscreen Layer (if applicable)
  • Optional but Highly Desirable: ASCII text component location file (Ref, X, Y, theta)

Set 3: Gerber RS-274D Data Files
Gerber Files to include (following layers are required – all layers beneficial):

  • Aperture List (D-code, Shape, X-size, Y-size)
  • Top Mask Layer
  • Top Silkscreen Layer
  • Bottom Mask Layer (if applicable)
  • Bottom Silkscreen Layer (if applicable)
  • Optional but Highly Desirable: ASCII text component location file (Ref, X, Y, theta)

Set 4: ASCII Centroid File
Not essential but helpful if available. Most CAD systems export this file and it is sometimes identified as an “XY”, “insertion”, “manufacturing”, or “CAM” file. It can be used as a sole CAD information source, but these files lack graphical information required for proper visual aid and documentation development. The text (ASCII) file contains the following:

  • Reference designators
  • X coordinate
  • Y coordinate
  • Package rotation (theta)

Set 4: Scanned Board Image – Please provide one of the following:

  • Scanned Image – (.jpg or .bmp formats)
  • Bare Board
  • Assembly Drawing
  • Optional but Highly Desirable: ASCII text component location file (Ref, X, Y, theta)

Set 5: Any of the Listed Machine File Import Formats (See Chart)

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