PCB DFA Checklist
Find assembly questions while the design is still easy to change. Work through the release, footprint, placement and process checks—and leave a clear record of unresolved items.
- Identify the risk
File, package, process or access issue
- Record the evidence
Drawing, datasheet or approved note
- Close the decision
Responsible owner and disposition
DFA connects the layout to the assembly process.
Design for assembly reviews the way parts will be fitted and verified, not just whether the PCB passes electrical design-rule checks. Typical assembly checks include footprint identity, pin-1 alignment, rotation and interference with the board outline.
Use the checklist below at schematic-to-layout handoff, before prototype release and before a repeat build with changes. Mark an item “Reviewed” only when supporting evidence exists. “Not applicable” needs a reason; “Blocked” needs an owner.
- Reviewed
- The issue has been evaluated; record supporting evidence.
- Blocked
- An unresolved issue needs a decision before the relevant release.
- Not applicable
- The check does not apply to this build; record why.
What to resolve before release
Use these review prompts with the actual design, component documentation and agreed manufacturing process.
Start from a controlled package
Review the actual released variant rather than a working CAD snapshot. Missing placement references, duplicated parts and contradictory DNP lists are release problems, not machine-programming details.
Use real component envelopes
A courtyard is a design aid. Verify actual body tolerance, lead span, height, connector mating space and the tooling needed around the component. Include both board sides in the review.
Review soldering constraints early
Flag hidden joints, large thermal lands, mixed solder-volume demands and heat-sensitive items. Package-specific application guidance helps identify questions but does not validate your complete process.
Allocate inspection and rework access
Identify joints that are optically hidden, components that obstruct probes and sites that may need local heating. Do not assume later inspection can compensate for inaccessible geometry.
Triage the findings before releasing the build
Suggested issue categories for a design review. Your project quality process controls the actual release authority.
On a small screen, scroll the table horizontally to see every column.
| Finding type | Example | Suggested next action |
|---|---|---|
| Release blocker | BOM package and footprint do not match. | Stop the affected release and correct or formally disposition the mismatch. |
| Process clarification | Required selective-solder access has not been agreed. | Obtain the tooling envelope and revise the layout or process. |
| Evidence gap | A joint is described as inspected but no method is identified. | Define how it will be evaluated and what evidence is retained. |
| Optimization | Rotation conventions could be made more consistent. | Improve where useful without overriding electrical or mechanical requirements. |
Keep the approved project requirements in control. Record uncertainties, agreed exceptions and the supporting evidence before the affected operation is released.
Evidence makes a checklist useful.
For each finding, record the reference designator or net, affected file revision, supporting drawing, proposed action and responsible reviewer. Screenshots help locate an issue, but the released source data must contain the approved correction.
- Keep the scope visible
- State which variant and quantity the review covers.
- Separate facts from approvals
- A datasheet supports a requirement; a named authority approves a deviation.
- Reopen changed items
- A new package, panel or assembly sequence can invalidate an earlier review.
Move from open questions to controlled decisions.
These steps organize a project review. They do not replace your formal release or acceptance process.
Identify
Select the project revision and fitted variant.
Evaluate
Review each item against the real build requirements.
Resolve
Assign owners to blocked or uncertain items.
Release
Use your formal approval process after review.
Record the review.
Keep the evidence.
32 checks for this topic. Record status and notes, then export a text copy for your project discussion. A completed checklist is not certification or production approval.
Session only. Nothing is saved automatically or transmitted. Export before closing or reloading. “Reviewed” records evaluation—not a pass verdict. Explain blocked and not-applicable items in the notes.
Showing 32 of 32 checks. Export always includes all checks.
Board, BOM and assembly drawing revisions agree.
Record all revision identifiers.
Fitted quantities match the variant and DNP list.
Check per-board quantities and excluded references.
Every fitted reference has a valid placement entry.
Check for duplicates, missing references and extra entries.
Placement origin, units and bottom-side convention are defined.
Use an asymmetric package to verify rotation.
Alternates and customer approvals are recorded.
Include the approved MPN, not only a supplier code.
Exact MPN package drawings match the footprints.
Check the full suffix and package option.
Pin-1 and polarity indicators are unambiguous.
Compare drawing, CAD data and package markings.
Thermal and exposed pads follow device-specific intent.
Review electrical connection and paste design.
Mask and paste layers are intentionally defined.
Do not rely on unchecked library defaults.
Via-in-pad construction is specified where used.
Review fill, cap and finished solderable surface as applicable.
Component envelopes include tolerance and height.
Inspect collisions on both sides.
Connectors and controls remain accessible in the enclosure.
Include mating plugs, tools and cable bend space.
Board edges and depanelization areas are reviewed.
Include support, tabs, cutters and stress-sensitive parts.
Fiducials and tooling features remain unobstructed.
Confirm the assembler’s recognition and holding needs.
Placement and rework tools can reach critical sites.
Check nozzles, local heating and nearby parts.
Electrical-critical placement is preserved.
Do not move bypass or feedback components solely for visual uniformity.
SMT and through-hole sequence is agreed.
Identify manual or post-reflow installations.
Thermal-profile constraints are available.
Include component and board exposure restrictions.
Fine-pitch apertures and paste release are reviewed.
Review foil thickness, apertures and paste together.
Exposed-pad vias and paste segmentation are reviewed.
Address solder loss and package-specific needs.
Selective-solder or wave-solder clearances are checked.
Use the actual tooling/process envelope.
Cleaning, coating and adhesives are compatible.
Define masking, cure and any test sequence restrictions.
ESD protection and packaging requirements are known.
Include sensitive discrete parts and modules.
MSL labels and exposure records are available where needed.
Do not assume sealing restores floor life.
Customer-supplied parts have a receiving plan.
Confirm quantity, condition, lot ID and discrepancy handling.
Setup and attrition allowances are agreed.
Do not assume exact BOM quantity is sufficient.
Visible and hidden joints have an inspection plan.
Match inspection to package geometry.
Probe, connector and programming access is adequate.
Review the fitted board and any coating.
Firmware, test limits and fixtures are controlled.
Define diagnostic logs and expected outcomes.
Standards, classes and addenda are recorded.
Use the contractually agreed editions.
Known coverage gaps have an approved disposition.
Avoid unsupported “100% coverage” claims.
Every blocked item has an owner and next action.
Complete formal approval separately from this checklist.
No checks match these filters. Change a filter to view other items.
Export your checklist and resolve outstanding items with your engineering team before production. Confirm any changes through your normal approval process.
Practical answers
before release.
Use these answers to frame the discussion. The approved project requirements remain the authority for the build.
Does a clean DRC result mean the board is assembly-ready?
No. Electrical design rules do not fully evaluate component identity, mechanical access, process sequence or how the finished assembly will be inspected. Use DRC as one input to the broader review.
Should all issues stop the project?
Classify issues by the affected operation and risk. A package mismatch may stop release immediately; an optimization may be deferred by an authorized reviewer. Record the decision rather than silently bypassing an item.
How should I use “Not applicable”?
State why the item does not apply—for example, no through-hole soldering in this variant. Reassess it when the variant or assembly process changes.
Can this checklist certify IPC compliance?
No. It is a preparation tool. Standards-based acceptance requires the applicable licensed documents, competent evaluation and the agreed project process.
Are the review notes saved automatically?
No. Notes stay in the current page session only. Export the review before reloading or closing the page. Filtering does not remove items from the export.
Technical references & scope
- KiCad — PCB Editor: Manufacturing Outputs and Design Rules
Typical placement review issues: pin 1, outlines, footprints and rotation.
- Texas Instruments — SMT and packaging application notes
Starting point for the application note appropriate to the actual package.
- Analog Devices — AN-1448, PBGA rework
Rework planning, thermal characterization and post-rework verification.
- Keysight — Requirement for Successful Boundary Scan Test Development on i1000D In-Circuit Test System (PDF)
Complementary physical and boundary-scan test access.
- IPC Standards — official revision register
Document names, revision history and addendum compatibility; checked 28 September 2026.
Use these engineering references alongside your component documentation and the standards specified for your order. Share your completed checklist with us to confirm assembly, testing and material requirements.