C553 — Too Close to Board Edge
The chip was 2.51 mm from the board outline against a 3.0 mm process limit.
Category: Component LayoutRisk: Depanel and handling stressAction: Review position against edge limit
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Manufacturing risk documented before production
How DFM Review Helps Reduce PCB Manufacturing Risk Before Production?
DFM checks your PCB design for manufacturability before fabrication. You receive a clear report showing identified risks, affected areas, and recommended corrections so potential production issues can be addressed early.
279 ChecksReview items recorded12 CategoriesManufacturing conditions3 ViolationsExceptions documented24h ReviewTypical report route
DFM analysis evidenceANONYMIZED SAMPLE
Real sample overview
What the Sample DFM Report Identified
Most checks passed, but the DFM report still identified several manufacturability risks before production. Each finding was tied to a specific component or design rule, making it easier to correct the issue before fabrication and assembly.
279review items checked
276passed items
3rule violations
4 Hotcomponent flags
| Board | 12-layer control board, 2.296 mm thickness |
|---|---|
| Dimensions | 254 × 406 mm |
| Assembly | 304 SMD parts and 41 through-hole parts |
| BGA details | Four BGAs, 0.5 mm minimum BGA pitch |
| Data check | 100% part-number and reference-designator match before review |
| Report identity | PCB-009238, anonymized for public display |
Named findings
DFM Findings With Locations, Risks and Recommended Corrections
The DFM report identifies the exact component or location involved, explains the risk, and provides a recommended correction so your design team can update the source files before production.
Q42 — Pin Heel Beyond Pad
The LFPAK56 MOSFET footprint did not fully support the pin heel.
Category: Graphics LibraryActual: −0.08 mm pad coverageRisk: Poor or inconsistent solder joint
R108 — Footprint Mismatch
The 2512 current-sense resistor footprint showed pin heel beyond pad.
Category: Graphics LibraryActual: −0.34 mm pad coverageRisk: Reliability concern on a current path
D25 — Pin Toe Beyond Pad
The SOD-123 diode footprint showed a small but documented toe overrun.
Category: Graphics LibraryActual: −0.02 mm pad coverageRisk: Designed-in weak joint
What the report contains
Actionable DFM Findings for Faster Design Correction
Each finding identifies the affected location, the design risk, and the recommended correction, helping your team update the source files with less back-and-forth.
Reference designatorThe exact component, board side and linked issue.
XY coordinatesA precise location for the layout engineer.
Captured evidenceAn image of the pad, pin, clearance or assembly geometry.
Standard vs actualThe process limit and measured value shown together.
Package dataMPN, package and footprint information when relevant.
Recommended correctionAn actionable next step with issue priority.
Engineering difference
CAD DRC Checks Design Rules. DFM Checks Manufacturing Reality.
CAD DRC checks the rules defined in your design tool. A DFM review goes further by checking the design against actual fabrication and assembly conditions, then showing where risks occur and how they can be corrected before production.
Review AreaCAD DRCEBest PCBA’s DFM Review
Design Rules
Checks rules configured in the CAD tool
Checks whether those rules also meet manufacturing requirements
Manufacturing Limits
Usually not based on factory process capability
Reviews trace, spacing, hole, pad, solder mask, assembly and other process limits
Issue Location
Shows the violated design rule
Identifies the affected component, pad, trace or board area
Review Result
Gives a rule warning or pass/fail result
Provides the risk, measured value and recommended correction
Engineer-run review
Engineers Review and Explain Each DFM Exception
Files move through engineering before production.
The report is intended for practical design decisions. Questions are connected with PCB fabrication, PCBA assembly, inspection and the requested production route when those conditions affect the board.
Named ownershipFindings are recorded against the affected design data.
Manufacturing contextProcess limits are considered before release.
Actionable responseDesign teams receive a correction path, not a vague warning.
NDA firstConfidentiality can be agreed before files are exchanged.
Review process
What to Send and What the DFM Review Returns
Typical boards may be reviewed within 24 hours. Dense, incomplete or unusually large projects receive a confirmed schedule after input checking.
Request a mutual NDA before sending Gerber, ODB++, BOM or drawings.
Gerber or ODB++ plus a BOM with manufacturer part numbers can start the review.
Missing or conflicting information is identified before the review proceeds.
PCB, assembly and test-readiness conditions are checked against the project.
Findings, evidence and recommended corrections are sent back for action.
Start with evidence
Review Your PCB Design Before Production Starts
Send Gerber or ODB++, BOM, stack-up and assembly drawings. Receive a report that names the issue, location, measured value, risk and correction direction.
DFM report FAQ
Questions Before Sending Production Files.
Is the DFM review free?
Yes. The current DFM service includes the review, report and recommended fixes at no charge, with no obligation to place a production order. Confirm any project-specific scope when sending files.
How long does the review take?
Typical boards are described as a 24-hour review. Large, dense or incomplete projects may take longer, and the schedule should be confirmed after the files are checked.
Can EBest PCBA sign an NDA first?
Yes. Request an NDA before sending Gerber, ODB++, BOM, drawings or other confidential project information.
What will the report identify?
The documented sample includes named components, issue categories, measured or actual values, manufacturing risk and the correction direction.
Do I have to place a production order?
No. The DFM report remains with you even if the board is built elsewhere.