PCB Communication & Stakeholder Relations 2 — Questions and Answers
Question 1: A mechanical engineer requests a PCB outline change after the layout is 80% complete. What is the best first step?
- Reject the request to protect schedule
- Assess the impact on component placement and routing before responding (Correct answer)
- Immediately update the board outline
- Escalate to the project manager without analysis
Correct answer: Assess the impact on component placement and routing before responding
Performing an impact assessment first allows you to communicate realistic schedule and cost consequences to the stakeholder.
Question 2: Which document is most effective for aligning all stakeholders on PCB design requirements at the start of a project?
- Bill of Materials (BOM)
- Design Requirements Document (DRD) or design specification (Correct answer)
- Gerber file set
- Assembly drawing
Correct answer: Design Requirements Document (DRD) or design specification
A Design Requirements Document captures electrical, mechanical, thermal, and compliance requirements agreed upon by all parties before design begins.
Question 3: A firmware engineer tells you a GPIO pin assignment must change. At what design stage does this change have the lowest cost?
- During PCB routing
- After first prototype assembled
- During schematic capture, before layout begins (Correct answer)
- After design review sign-off
Correct answer: During schematic capture, before layout begins
Pin changes during schematic capture require only a net rename, whereas post-layout changes may require rerouting multiple signals.
Question 4: What is the primary purpose of a Design Review (DR) meeting in a PCB project?
- To finalize the manufacturing quote
- To identify design issues and obtain stakeholder sign-off before advancing to the next phase (Correct answer)
- To train assembly technicians
- To update the project schedule
Correct answer: To identify design issues and obtain stakeholder sign-off before advancing to the next phase
Design reviews serve as formal checkpoints where cross-functional stakeholders verify the design meets requirements before costly downstream steps.
Question 5: A procurement team asks why a specific capacitor brand was specified. What should the PCB designer provide?
- Only the part number with no further explanation
- A justification citing electrical parameters, footprint, and qualification status (Correct answer)
- A request to use any available part
- The vendor's marketing datasheet only
Correct answer: A justification citing electrical parameters, footprint, and qualification status
Providing a technical justification helps procurement find qualified alternates while preserving the design intent.
Question 6: During a design hand-off to the contract manufacturer, which file is most critical for communicating board stackup information?
- Schematic PDF
- Stackup drawing or fabrication notes specifying layer materials, thicknesses, and Dk values (Correct answer)
- 3D STEP model
- Silkscreen Gerber
Correct answer: Stackup drawing or fabrication notes specifying layer materials, thicknesses, and Dk values
The stackup drawing defines dielectric properties that directly affect controlled impedance traces and must be communicated precisely to the fab.
Question 7: A stakeholder requests a verbal-only design change. What is the recommended professional practice?
- Implement the change immediately to save time
- Ask the stakeholder to submit a written Engineering Change Order (ECO) before making changes (Correct answer)
- Ignore the request until a meeting is scheduled
- Implement the change and document it yourself after the fact
Correct answer: Ask the stakeholder to submit a written Engineering Change Order (ECO) before making changes
Written ECOs create an auditable trail and ensure the requester formally accepts responsibility for the change and its impacts.
PCB Communication & Stakeholder Relations 2
A mechanical engineer requests a PCB outline change after the layout is 80% complete.
What is the best first step?