Electronics PDM workflow
PCB document control: make sure manufacturing uses the approved files.
PCB document control is how an electronics team prevents draft Gerbers, old BOMs, unapproved alternates, and outdated assembly notes from becoming real manufactured boards.
Direct answer: what PCB document control should do
PCB document control should define which files are draft, under review, approved, released, superseded, obsolete, or do-not-use. It should control schematics, PCB source files, Gerbers, drill files, BOMs, pick-and-place files, assembly notes, test instructions, release notes, ECOs, and approval records. Every released document should be tied to a hardware revision and manufacturing package.
PCB documents that should be controlled
| Document | Why control it | Typical owner |
|---|---|---|
| Schematic PDF and source | Defines circuit intent and review baseline. | Engineering |
| PCB layout source | Defines editable board design and future revision base. | PCB designer |
| Gerbers and drill files | Defines fabrication output sent to the PCB manufacturer. | Engineering / release owner |
| BOM | Controls what purchase and assembly should use. | Engineering + purchase |
| Pick-and-place | Controls SMT placement for assembly. | Engineering / assembly vendor |
| Assembly notes | Documents DNP, polarity, jumpers, manual soldering, and inspection points. | Engineering + production |
| Test instructions | Defines how boards are brought up and accepted. | Engineering + quality |
| ECO and release notes | Explains why changes happened and which release includes them. | Engineering + product owner |
Document status rules
Every controlled document needs a status. Status prevents a draft export from being treated like an approved production file.
| Status | Meaning |
|---|---|
| Draft | Work in progress. Not for purchase, fabrication, or assembly. |
| Under review | Ready for checking, but not yet approved. |
| Approved | Approved internally but not necessarily sent to manufacturing. |
| Released | Frozen file set used for manufacturing, assembly, client handoff, or production. |
| Superseded | Old version kept for support/history, replaced by a newer release. |
| Do not use | Known-bad or cancelled release retained to prevent accidental reuse. |
Approval rules for PCB documents
Approval does not need to be heavy. It needs to be explicit. The person using a document should know whether engineering, purchase, production, or quality has accepted it.
- Engineering approves schematics, PCB layout, Gerbers, firmware compatibility, and test procedure.
- Purchase approves supplier-specific BOM notes and sourcing constraints.
- Production or EMS approves assembly notes, process constraints, and fixture needs.
- Quality or support approves field-impacting changes when products are already shipped.
- The release owner freezes the final manufacturing package and records the date sent.
Common PCB document control mistakes
A temporary Gerber export gets manufactured because no status was visible.
A purchase or assembly change happens silently after the release was sent.
Support cannot trace what was built for an older customer batch.
If a document can affect fabrication, assembly, purchase, firmware, testing, support, or customer delivery, it should be controlled.
When PCB document control needs PDM
Folder names and manual approvals are enough for a few prototypes. They become risky when document status, approval, revision, ECO, and release package relationships need to be searchable and auditable.
Electronics PDM gives PCB documents controlled status and history.
PCBVault Electronics PDM is being planned to manage controlled PCB documents, BOMs, firmware links, ECO approvals, release packages, and audit history.
FAQ
What is PCB document control?
It is the process of controlling PCB-related documents by revision, status, approval, release package, and manufacturing use.
Is document control only for large companies?
No. Small teams need lightweight control once PCB files affect purchase, assembly, support, or repeat manufacturing.
Should old PCB documents be deleted?
No. Superseded documents should be archived so support and future engineers can trace what was built.
What is the biggest document control risk?
The biggest risk is using a draft or obsolete document as if it were the approved manufacturing release.