Gerber and drill
Trace, spacing, annular ring, drill-to-copper, board outline and solder-mask checks.
Manufacturing service / Risk review
PCB DFM Review Service
PCB DFM review identifies fabrication, assembly and file-package risks before tooling or production release, with findings tied to the intended manufacturing process.
Gerber / ODB++Fabrication data
Stackup + impedanceElectrical review
BOM + drawingsAssembly review
Findings reportActionable output
Engineering choices
Review the design against the line that will build it.
A useful DFM review does more than run generic rules. It connects the design package to material, drilling, imaging, lamination and assembly process limits.
Materials and impedance
Layer order, dielectric thickness, copper balance, reference planes and target impedance.
BOM and placement
Footprints, package availability, fine-pitch geometry, panel fiducials and paste-aperture risk.
Testing requirements
Electrical test, inspection access, test-point coverage and custom acceptance needs.
Technical reference
Fabrication limits used during review
These values establish the standard screening window. Advanced and flexible designs are checked against their own qualified processes.
Standard PCB fabrication limits
Baseline checks for rigid and multilayer PCB
| Layer count | 1–40 layers |
|---|---|
| Base materials | FR-4, High-Tg FR-4, halogen-free FR-4, Rogers, Taconic/AGC, PI, aluminum, PTFE/Teflon, F4B and other specialty laminates |
| Board thickness | 0.10–10.0 mm |
| Minimum trace / spacing | 2.5 / 2.5 mil (0.0625 / 0.0625 mm) |
| Minimum mechanical drill | 0.15 mm |
| Minimum laser via | 0.10 mm |
| Standard aspect ratio | Up to 15:1 |
| Copper thickness | 0.5–12 oz, depending on board type and construction |
| Controlled impedance | ±10% standard; ±5% for tighter requirements |
| Warpage | ≤0.75% standard; ≤0.5% available when specified |
| Surface finishes | HASL, Lead-Free HASL, OSP, ENIG, Immersion Silver, Immersion Tin, ENEPIG, Hard Gold, Gold Finger and selective finishes |
Assembly screening checklist
Inputs reviewed before the fabrication package is released to PCBA
| Package and footprint fit | Component body, land pattern, polarity, height and inspection access reviewed against the released package |
|---|---|
| Board and panel format | Board outline, tooling rails, fiducials, support and panelization reviewed for the intended assembly route |
| Assembly process access | SMT / THT sequence, solder access, clearance, thermal exposure and rework boundary reviewed together |
| Test access | Test points, probe access, programming interface and functional-test requirements defined before release |
Capability values are design-dependent. Material, copper weight, layer count, via structure, finished thickness and surface finish can change the achievable combination.
Design context
A controlled release, not an automated score.
Critical findings are separated from advisory improvements. Production starts from the approved file package, after questions are resolved and revisions are aligned.
- Receive Gerber RS-274X or ODB++, drill, drawing and BOM
- Review against the intended fabrication and assembly process
- Return findings with location, severity and proposed correction
- Resolve critical issues and confirm the approved production package
- Use NDA protection before file exchange when required
ODB++Gerber RS-274XIPC-2581NC DrillDXFPDF fabrication drawingBOM XLS / CSVPick & Place CSV
Engineering review
Resolve critical DFM findings before production release.
Separate release-blocking findings from advisory improvements, resolve open questions and confirm one approved production package.
Trace, spacing, annular ring and solder-mask geometry
Drill size, aspect ratio and via structure
Stackup symmetry, copper balance and impedance
Footprint, package and fine-pitch assembly checks
Panelization, fiducials and material yield
Test access, acceptance criteria and special requirements
Practical fit
What a complete review package should contain
Use these examples as a starting point. The board construction still follows the product’s electrical, mechanical and qualification requirements.
Fabrication data
Gerber RS-274X or ODB++, NC drill and board outline.
Fabrication drawing
Finished thickness, copper, finish, tolerance and IPC class.
Stackup intent
Material, layer order and controlled-impedance targets.
Assembly data
BOM, pick-and-place and assembly drawings when PCBA is included.
Testing requirements
Electrical, ICT, flying-probe, functional or custom verification.
Revision control
A single approved data package with matching revision identifiers.
Frequently asked questions
PCB DFM review FAQ
These answers cover review scope, required files, revision control and the handling of manufacturing findings.
Is DFM review a separate order?
The existing service model includes DFM review with the quotation and active order evaluation. The design package is reviewed before production release.
What files are needed?
Send Gerber RS-274X or ODB++, NC drill, fabrication drawing and stackup. Add BOM, pick-and-place and assembly drawings when assembly is included.
Does PCBArise modify the design files?
Findings and proposed corrections are returned for approval. The production package remains under customer revision control and is only released after alignment.
What are common DFM findings?
Common findings include insufficient annular ring, drill-to-copper clearance, copper imbalance, unsuitable via structures, incomplete fabrication notes and BOM-to-footprint mismatch.
Related PCB pages
Continue from DFM review to fabrication.
Use the approved data package to confirm capability, board construction and the prototype or production route.
Manufacturing service
PCB Capabilities
PCB manufacturing capabilities vary by material, copper weight, layer count, via structure and finished thickness. Use the applicable process window rather than combining isolated maximum values.PCB technologyRigid PCB (FR4)
Rigid PCB manufacturing provides a stable platform for fixed mechanical assemblies, from single-sided circuits to controlled-impedance multilayer boards.PCB technologyMultilayer PCB (4–40 Layers)
Multilayer PCB manufacturing combines routing density, reference planes and power distribution in a controlled stackup. A 2 layer, 4 layer or 6 layer PCB stackup is selected from the routing, signal and power requirements rather than treated as a duplicate door page.Manufacturing servicePrototype PCB
Prototype PCB manufacturing turns approved design data into production-intent boards for fit, electrical, assembly and engineering validation. Quick-turn PCB fabrication and fast-turn PCB manufacturing options are reviewed against the released package, materials, process requirements and testing plan.Have a board in mind? Let’s define the right build path.
Share the available Gerber, ODB++, drawing, stackup or project requirements with the PCBArise team.