Engineering Selection Reference
Ten-layer 7.8 mm ultra-thick PCB: engineering review
Use the illustrative thickness and hole callouts to organize a hole-group review. They are unverified reference inputs and do not establish current KFPCBA fabrication limits or a delivered board.
All numeric and material callouts below are illustrative, unverified review inputs. They are not evidence of KFPCBA delivery, measured performance, certification or current manufacturing limits. A new order requires approved drawings and confirmation of the complete process combination.
Illustrative configuration inputs
| Review item | Illustrative input and unresolved conditions |
|---|---|
| Candidate laminate | FR4 S1000-2M; exact grade and supply documentation unverified |
| Illustrative construction | 10 layers / 7.8 mm |
| Unverified minimum-hole callout | 0.6 mm; drill versus finished diameter not established |
| Unverified finish label | Gold; define actual surface construction |
Review the engineering boundaries
Thickness divided by diameter does not establish drilling, cleaning or plating feasibility. With the illustrative numbers, 7.8 / 0.6 = 13, but the ratio cannot describe a manufacturing condition until hole type, drill/finished diameter, copper requirements and effective structure are defined.
Required RFQ inputs
Provide complete stackup, thickness tolerance, drill and finished-hole groups, PTH/NPTH/slot definitions, copper by layer, hole-wall copper, connector interfaces, material specifications and representative microsection requirements.
Acceptance and traceability
Review each hole group against the actual structure and agree on dimensions, representative cross sections, metallization and net checks. Current manufacturing feasibility must be confirmed for the complete combination before a firm commitment.
Engineering review scenario
Changing an illustrative hole diameter from 0.6 mm to 0.5 mm changes the numerical ratio to 15.6. This prompts renewed review, but does not by itself prove feasibility or infeasibility.
This scenario explains a review method; it is not a documented defect or test result from a KFPCBA project.
Quotation and delivery scope
Itemize materials, fabrication, engineering preparation, agreed inspections, reports, packaging, taxes and freight. Identify quantity units, drawing revision, approved deviations and tooling ownership. Assembly, software and complete-system validation are separate unless expressly included. No published unit price, schedule or capability guarantee is established by this reference.
Hole and copper construction review · Material grade documentation
Submit fabrication files for review or use the short project inquiry. Identify this reference page and list the inputs still to be defined.
