Why design rules prevent manufacturing defects in PCB Design - Dashboard Impact

Dashboard Mode - Why design rules prevent manufacturing defects

Business Question

How do design rules in PCB design help reduce manufacturing defects and improve product quality?

Sample Data: PCB Design Rule Checks and Defect Counts

Design Rule	Rule Description	Violations Found	Defects After Manufacturing
Minimum Trace Width	Trace width must be at least 6 mil	5	3
Minimum Spacing	Spacing between traces at least 6 mil	3	2
Via Size	Via diameter at least 10 mil	2	1
Annular Ring	Annular ring width at least 5 mil	4	2
Silkscreen Clearance	Clearance from pads at least 3 mil	1	0
Component Placement	Components must not overlap	0	0
Test Point Access	Test points accessible for probes	1	0
Overall	Total violations and defects	16	8

Dashboard Components

• KPI Card: Total Violations
  Shows total design rule violations found before manufacturing.
  Formula: SUM of 'Violations Found' column = 16
• KPI Card: Total Defects
  Shows total defects found after manufacturing.
  Formula: SUM of 'Defects After Manufacturing' column = 8
• Bar Chart: Violations vs Defects by Rule
  X-axis: Design Rule
  Y-axis: Count
  Two bars per rule: Violations Found and Defects After Manufacturing
  Shows how violations relate to defects per rule.
• Table: Detailed Rule Data
  Shows all columns from sample data for detailed inspection.

Dashboard Layout

+----------------------+----------------------+
|  KPI: Total Violations |  KPI: Total Defects  |
+----------------------+----------------------+
|                                              |
|      Bar Chart: Violations vs Defects         |
|                                              |
+----------------------------------------------+
|                                              |
|           Table: Detailed Rule Data           |
|                                              |
+----------------------------------------------+
  

Interactivity

A filter dropdown allows selecting one or more Design Rules.
When a rule is selected, the KPI cards update to show totals only for those rules.
The bar chart and table also update to show data filtered by the selected rules.
This helps focus on specific design rules causing most defects.

Self Check

If you filter the dashboard to show only the "Minimum Trace Width" rule:
- What is the total number of violations?
- What is the total number of defects?
- How do the bar chart and table update?
(Answer: Violations = 5, Defects = 3, bar chart and table show only that rule's data.)

Key Result

Dashboard shows how PCB design rule violations relate to manufacturing defects by rule.