During a PCB design review, the checklist item "Confirm component polarity" is marked complete, but the assembled board malfunctions. What is the most probable cause?

medium📝 Formula Fix Q6 of 15

PCB Design - Design Review and Testing

AThe solder mask layer was applied with incorrect thickness

BThe PCB substrate material was incompatible with the components

CThe power supply voltage was set too high during testing

DComponent polarity was incorrectly verified or documentation was inaccurate

Step-by-Step Solution

Solution:

Step 1: Analyze checklist item
"Confirm component polarity" ensures correct orientation of polarized parts.
Step 2: Identify failure cause
If the board malfunctions despite marking this done, polarity verification likely failed or was inaccurate.
Final Answer:
Component polarity was incorrectly verified or documentation was inaccurate -> Option D
Quick Check:
Polarity errors cause malfunction despite checklist completion [OK]

Quick Trick: Polarity errors cause assembly failures [OK]

Common Mistakes:

MISTAKES

Blaming substrate or solder mask for polarity issues
Confusing power supply problems with design review errors
Assuming checklist completion guarantees correctness

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More PCB Design Quizzes

During a PCB design review, the checklist item "Confirm component polarity" is marked complete, but the assembled board malfunctions. What is the most probable cause?

Step 1: Analyze checklist item

Step 2: Identify failure cause

Final Answer:

Quick Check:

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