PCB File Preparation

Create a release folder with one identity

Choose a project identifier and revision, then create a clean output folder for that release. Include a short manifest listing the files, their purpose, board or assembly variant and any open questions. Do not combine old exports with new ones because their filenames happen to match. Keep source-design history separate from the package approved for manufacture.

Use readable names that distinguish copper layers, solder mask, legend, paste and mechanical information. A filename helps humans, but it should not be the only source of layer meaning. Where your export format provides attributes or job information, preserve it and check that the receiving workflow supports the chosen format.

Prepare fabrication images, drills and requirements

Include the intended copper and other manufacturing layers, drill information, board profile and an authoritative fabrication drawing or specification. State the layer order, finished thickness, material requirements, copper requirements, finish and any controlled features. Distinguish plated and nonplated holes and identify slots or special constructions clearly.

Gerber’s formal specification is maintained by Ucamco; use a supported modern export rather than treating a file extension as proof of correctness. A manufacturing image does not automatically communicate every material, tolerance or test requirement. Include those requirements explicitly and ask engineering to resolve any format or interpretation questions.

Provide assembly data that agrees with the artwork

The BOM should give exact manufacturer part numbers, references, quantities and variant status. The placement file should identify position, rotation, side, units and origin. Assembly drawings should communicate polarity, connector direction, mechanical details and special instructions. Keep do-not-populate positions distinguishable from missing entries.

Cross-check a sample of asymmetric components against the package drawing and placement data, then reconcile all fitted references between files. Include through-hole parts and mechanical items in the appropriate documents even when they do not appear in an automated placement export. If firmware or test is requested, provide its version and instructions as an additional controlled part of the release.

Inspect the exported result independently

Open the actual manufacturing outputs in a suitable viewer. Check layer order, outline closure, copper and drill alignment, hole types, solder-mask openings, legend readability and the overall dimensions. Review the exports rather than only the native PCB editor view; the purpose is to inspect what the receiver will receive.

Use a design-derived connectivity export where appropriate and confirm the accepted format. Investigate any mismatch before release. If you use a cloud viewer, choose one consistent with your organization’s sharing rules; a local viewer may be more appropriate for restricted designs. Do not assume that an attractive rendered preview proves all specifications or assembly data are complete.

Package changes without creating competing versions

When correcting a release, identify the superseded package and provide a complete replacement or an unambiguous agreed change set. Explain which files changed and why. A new ZIP with the same name and no revision note makes it difficult to know whether engineering has reviewed the actual current design.

Keep the approved package intact after release. If a later drawing clarification changes a manufacturing instruction, record the approval and affected revision rather than quietly replacing a file. The goal is to let both parties reconstruct the exact information governing a build, including approved panel or process adjustments.

Prepare the inquiry around the files

Add quantity, intended delivery condition, target milestone and review priorities to the inquiry. Mention unusual materials, packages, tolerances or test requirements in the written brief as well as the attachment. This directs attention to the decisions that cannot safely be inferred from the artwork.

Use engineering resources for related guides, software export tasks for application-specific references and DFM review to define the checking scope. Submit the controlled file package through the inquiry form using its displayed attachment limits. Accepted formats, technical scope and any missing information are confirmed during engineering review.

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