Consigned PCB Assembly

Treat the incoming kit as a controlled release

Prepare a packing list tied to the assembly revision and BOM. For every item, identify manufacturer part number, customer item number if used, quantity, packaging type and applicable references. Keep different manufacturers or lots distinguishable when that distinction matters to your requirements. A supplier label should not be covered by an internal label that removes useful identity information.

Separate fitted material from spares, samples and items awaiting approval. If several projects share a shipment, package them so receipt can allocate stock unambiguously. State whether supplied bare boards are single units or panels, and include their revision and accepted condition. The receiving record becomes the starting point for material reconciliation.

Reconcile the kit against the build quantity

Multiply fitted quantity per assembly by the planned number of each variant, then compare the result with actual supplied quantities. Add agreed setup or replacement allowances separately so they remain visible. A spreadsheet total is useful, but it cannot detect an incorrect reel label or a missing physical package; both documentary and physical checks matter.

Flag shortages before shipment. Ask whether partial assembly is useful or would create extra handling, incomplete units and confusing test results. Do not assume excess common parts compensate for a shortage of one critical device. A build is materially ready only when its required items and approved process allowances are accounted for.

Preserve packaging and handling information

Keep components in appropriate protective packaging with their original identification where practical. Moisture sensitive and electrostatic sensitive parts may require specific handling based on their device and packaging documentation. Provide the relevant status and history when packages have been opened, rather than describing all supplied material simply as new.

Avoid creating an unsupported universal baking instruction. Temperature, duration and packaging compatibility depend on the component and applicable guidance. If storage or exposure history is unknown, identify that uncertainty before shipment and request review. The appropriate disposition may affect material usability and sequence; it should not be improvised after the kit reaches the line.

Agree the rules for discrepancies and attrition

Define how receipt discrepancies will be reported and who can authorize a correction. Examples include a count mismatch, an unapproved manufacturer, a damaged carrier or a label that does not match the packing list. Decide whether the affected item is quarantined, returned or used after documented approval.

Also agree how setup consumption, damaged parts and replacements will be recorded. The purpose is to make the material balance understandable, not to promise that every supplied part becomes a finished board. Particularly valuable or irreplaceable parts deserve an explicit handling discussion so recovery options and allowable consumption are understood before work starts.

Keep ownership clear when purchasing fills a gap

A consigned project can include supplier purchased shortage items, but those lines need their own approval and ownership record. State whether a purchase fills the current order only or creates stock for future use. Do not merge a newly sourced alternate into the customer kit without identifying the technical approval behind it.

When the BOM changes during the build, reconcile both the instruction and the physical inventory. Material already issued for the old configuration may need to be segregated. Give every affected unit a clear disposition so the new BOM does not obscure which parts were actually installed on earlier boards.

Specify the material closeout you need

At completion, request the agreed reconciliation of assembled quantity, unused stock, consumed allowances and material awaiting disposition. Decide how partial reels, trays, loose parts and customer packaging will be returned or retained. Include identification expectations for returned components so your next receiving team can use the records.

Review assembly scope, compare turnkey responsibility and prepare the release with file preparation. Submit the consigned kit plan before shipping material. Engineering review confirms packaging suitability, process feasibility and the specific receipt and closeout records available.

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