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Design007-Apr2023

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54 DESIGN007 MAGAZINE I APRIL 2023 Part Drawing/Data Package Requirements Drawing media includes paper, Gerber, HPGL, PDF, Film Plot, and AutoCAD. Note: e "drawing" can consist of a "drilling drawing" and detailed "readme" file. e drawing/data package should include: • Profile dimensions and tolerance for the board • A hole-to-board edge dimension in two axes • List of finished hole sizes and hole size tolerance • Material type, thickness, and finished copper weight • Applicable acceptability specifications as required • Solder mask color, type, and number of sides • Surface finish: SMOBC, white tin, electroless nickel/gold, etc. • Silk screen/legend color and number of sides Array Drawings Drawing media includes paper, Gerber, HPGL, PDF, Film Plot, AutoCAD. If the board is to be supplied in array form, the array drawing shall have the following: • Profile dimensions and tolerance for array • Array edge to board edge/or hole in 2 axes and orientation of pieces in the array • Dimensional location, size and tolerance of array tooling holes • Dimensional location and size of array fiducials on copper and mask layer • Breakaway slot detail and holding tab locations or scoring cross-sectional detail • Number of "X outs" allowed per array Artwork Common media include Gerber RS274X, Gerber, film. Gerber RS274X is the preferred format because it has embedded apertures and for- matting within its file, which reduces transla- tion/interpretation errors. Standard Gerber files require a separate aperture list. Film plots shall be used as received. Drill Data Common media is Excellon format ASCII data. Paper coordinate lists and "bomb plotting" are to be avoided. Artwork Approval Customer artwork approval is strongly encouraged to ensure proper interpretation of Part drawings and data example.

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