6層基板アセンブリ製造事例：設計から完成まで
A six-layer PCBA project recorded by DIYIPCB in October 2026 shows why a useful production schedule needs more detail than a single turnaround number. Production preparation and PCB production were recorded on 14 October; overall production completion was recorded on 26 October, approximately 12 calendar days later.
This is one completed production example. It is not a standard lead-time promise, and the completion milestone does not include shipping transit.
The recorded production milestones
| Recorded date | Milestone |
|---|---|
| 14 October 2026 | Production files prepared and PCB production started |
| 22 October 2026 | PCB production completed; component-ordering milestone recorded |
| 24 October 2026 | All components received |
| 26 October 2026 | Assembly scheduled and overall production completed |
These dates reflect the project’s recorded progress updates. Several milestones can be entered together; the record does not establish the exact working hours spent on each operation.
Board completion and assembly completion are different
For this six-layer build, PCB completion was recorded before all components were received. A fabricated board alone was not the finished assembly. The project also required component readiness and an assembly stage before overall production could be marked complete.
When requesting a quotation, ask whether the stated schedule covers bare-board fabrication, component procurement, assembly or the complete agreed production scope. Confirm separately when that schedule starts and how shipping will be handled.
What this means for your next PCBA request
- Keep one revision across the files. Supply Gerbers and drill data, a BOM with manufacturer part numbers, and component placement data for the same board revision.
- Explain component requirements. Identify parts that must use an exact manufacturer or grade. Clearly state whether substitutions are permitted and how approval should work.
- Define the assembly scope. Include do-not-populate positions, polarity, through-hole work and any programming or test requirements.
- Separate production from delivery. Confirm the proposed production completion date, shipping method and estimated transit time as different parts of the plan.
Discuss the schedule for your own build
Layer count is only one part of the request. Quantity, materials, component availability and additional assembly or testing requirements must also be reviewed. The schedule for a future project should come from its accepted quotation.
Read about prototype and small-batch PCB assembly, check our PCB manufacturing capabilities, or use the PCB and PCBA quotation page to share your files and requirements.