Engineering Selection Reference
RO4350B communications PCB configuration: engineering review
Review RF materials, geometry, finish and measurement boundaries together. This illustrative double-sided RO4350B configuration is not a KFPCBA production example or a measured RF-performance record.
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 | RO4350B; exact procurement revision and foil unverified |
| Illustrative construction | 2 layers / 0.762 mm total board thickness; dielectric thickness must be defined separately |
| Candidate finish | ENIG; region and layer requirements need approval |
| Unverified minimum-hole callout | 0.3 mm; hole type and diameter definition require drawings |
Review the engineering boundaries
An unchanged material grade does not establish equal electrical behavior. Dielectric thickness, foil, etched geometry, finish, ground returns, connector transitions and calibration planes affect the comparison. No frequency band, impedance result or insertion-loss value is established here.
Required RFQ inputs
Provide material/foil revision, dielectric thickness, RF geometry and references, connector/port drawings, outline, hole table, finish zones, compensation permissions and RF test structures and conditions.
Acceptance and traceability
Separate bare-board electrical checks, representative impedance coupons and fixture-based RF measurements. Agree on frequency band, reference planes, calibration, sample count and criteria before quoting special RF verification.
Engineering review scenario
If a connector changes without changing PCB traces, compare mounting and calibration boundaries before attributing a loss-curve difference to laminate. Measurements with different fixture lengths are not a matched comparison.
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.
RO4350B material and stackup · RF quotation and test scope
Submit fabrication files for review or use the short project inquiry. Identify this reference page and list the inputs still to be defined.
