Engineering Selection Reference
Bonding PCB: engineering review
Define wire, bonding method and pad-surface requirements separately from ordinary soldering requirements. This illustrative configuration is not a record of qualified KFPCBA wire-bonding production.
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 material | FR4; exact grade unverified |
| Illustrative construction | 4 layers / 1.6 mm |
| Reference geometry | 4/4 mil width/spacing and 0.25 mm minimum-hole callouts; definitions and feasibility unverified |
| Unverified finish description | Immersion gold / ENIG bonding; actual surface construction requires qualification |
Review the engineering boundaries
Ordinary ENIG inspection cannot establish compatibility with every bonding wire or process. The bonding team and fabricator must define wire material and diameter, bond-site geometry, nickel/gold construction, cleanliness, storage and subsequent packaging together. No pull or shear result is established by this reference.
Required RFQ inputs
Provide bonding method and wire, pad drawings, region map, surface-layer specifications, packaging and handling requirements, actual equipment/process conditions, samples and agreed destructive-test requirements.
Acceptance and traceability
Separate bare-board surface inspection from bonding-combination approval. Record samples, cleaning, equipment settings, test methods and failure locations; acceptance criteria must come from the approved process specification.
Engineering review scenario
If bonding samples fail at different locations, retain untreated samples and compare surface condition, storage, wire and equipment one factor at a time. Undocumented wiping can destroy evidence of the original condition.
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.
Surface-finish selection · Inspection tasks and coverage
Submit fabrication files for review or use the short project inquiry. Identify this reference page and list the inputs still to be defined.
