3D visualization for clearance check in PCB Design - Dashboard Guide

Dashboard Mode - 3D visualization for clearance check

Goal

Check if electronic components on a PCB have enough space between them to avoid electrical shorts or interference.

Sample Data: Component Positions and Sizes

Component	X (mm)	Y (mm)	Z (mm)	Width (mm)	Height (mm)	Depth (mm)
Resistor R1	10	15	2	3	1	1
Capacitor C1	14	15	2	2	2	2
IC U1	20	10	3	5	5	1.5
Connector J1	25	20	4	6	3	3
LED D1	12	18	2.5	1.5	1.5	1.5

Dashboard Components

• KPI Card: Minimum Clearance Distance
  Formula: Calculate the smallest 3D distance between any two components edges.
  Result: 1.0 mm
• 3D Scatter Plot: Component Positions
  Shows components as boxes in 3D space using X, Y, Z and their sizes.
  Color code: Red if clearance < 1.5 mm, Green otherwise.
• Table: Clearance Distances Between Components
  Lists pairs of components and their edge-to-edge distances in mm.
  Example row: R1 - C1: 1.0 mm

Dashboard Layout

+----------------------+-----------------------+
| Minimum Clearance KPI | 3D Scatter Plot       |
| (Top Left)            | (Top Right)           |
+----------------------+-----------------------+
| Clearance Distance    |                       |
| Table                |                       |
| (Bottom Left)         |                       |
+----------------------+-----------------------+

Interactivity

User can select a component from the clearance distance table. The 3D scatter plot highlights the selected component and its neighbors with low clearance in red. The KPI card updates if a filter is applied to show minimum clearance only for selected components.

Self Check

Add a filter to show only components with clearance less than 1.5 mm. Which components remain highlighted in the 3D scatter plot and which rows remain in the clearance distance table?

Key Result

3D visualization dashboard showing PCB component positions and minimum clearance distances to ensure safe spacing.

Practice

1. What is the main purpose of using 3D visualization in PCB design clearance checks?

easy

A. To visually confirm that components have enough space between them

B. To calculate the electrical resistance of the PCB traces

C. To generate the PCB manufacturing cost estimate

D. To create a 2D schematic diagram of the circuit

Solution

1. Step 1: Understand the role of 3D visualization in PCB design

   3D visualization allows designers to see the physical layout of components in three dimensions.

2. Step 2: Identify the clearance check purpose

   The main goal is to ensure components do not interfere or touch each other, preventing manufacturing errors.

3. Final Answer:

   To visually confirm that components have enough space between them -> Option A

4. Quick Check:

   3D visualization = clearance space check [OK]

Hint: Think: 3D view shows physical spacing clearly [OK]

Common Mistakes:

• Confusing clearance check with electrical calculations
• Thinking 3D visualization creates cost estimates
• Mixing 3D visualization with 2D schematic creation

2. Which of the following is the correct step to start a 3D clearance check in a PCB design tool?

easy

A. Export the PCB design as a PDF file

B. Run a netlist comparison report

C. Enable the 3D view mode and activate clearance checking settings

D. Print the 2D layout and measure manually

Solution

1. Step 1: Identify how to access 3D clearance check

   Most PCB tools have a 3D view mode that must be enabled to visualize components in 3D.

2. Step 2: Activate clearance checking features

   Within 3D mode, clearance checking settings help highlight spacing issues automatically.

3. Final Answer:

   Enable the 3D view mode and activate clearance checking settings -> Option C

4. Quick Check:

   3D mode + clearance check = start clearance check [OK]

Hint: Start by turning on 3D view and clearance tools [OK]

Common Mistakes:

• Exporting files instead of using 3D mode
• Confusing netlist reports with clearance checks
• Measuring manually instead of using software tools

3. Given a 3D PCB model where two components overlap visually in the 3D view, what is the likely output of the clearance check report?

medium

A. No clearance issues detected

B. Warning: Components overlap detected

C. Error: Missing component data

D. Clearance check skipped due to 2D mode

Solution

1. Step 1: Analyze the visual overlap in 3D model

   If two components overlap in 3D, it means their physical space conflicts.

2. Step 2: Understand clearance check output

   The clearance check tool reports warnings or errors when overlaps or spacing violations occur.

3. Final Answer:

   Warning: Components overlap detected -> Option B

4. Quick Check:

   Overlap in 3D = overlap warning [OK]

Hint: Overlap means clearance warning appears [OK]

Common Mistakes:

• Assuming no issues if overlap is seen
• Confusing missing data errors with overlap
• Thinking clearance check runs in 2D mode only

4. You run a 3D clearance check but the tool does not highlight any spacing issues, even though components appear very close. What is the most likely cause?

medium

A. Clearance check settings are set to ignore small gaps

B. The PCB design file is corrupted

C. 3D visualization is disabled

D. The components are actually far apart

Solution

1. Step 1: Check clearance check sensitivity settings

   Tools often have a minimum clearance threshold; if gaps are below it, no warnings appear.

2. Step 2: Rule out other causes

   File corruption or disabled 3D mode would cause errors or no visualization, not silent misses.

3. Final Answer:

   Clearance check settings are set to ignore small gaps -> Option A

4. Quick Check:

   Settings ignoring small gaps = no warnings [OK]

Hint: Check clearance threshold settings first [OK]

Common Mistakes:

• Assuming file corruption without error messages
• Confusing visualization off with clearance check off
• Ignoring clearance threshold settings

5. A PCB designer uses 3D visualization to check clearance and notices a hidden clearance violation between a tall capacitor and a nearby connector. How should the designer resolve this issue before manufacturing?

hard

A. Increase the solder mask thickness to cover the gap

B. Ignore the violation since it is hidden in 2D views

C. Reduce the PCB thickness to fit components closer

D. Adjust component placement or select a smaller capacitor to increase clearance

Solution

1. Step 1: Identify the clearance violation in 3D

   The 3D view reveals a physical conflict not visible in 2D, which must be fixed.

2. Step 2: Choose a practical fix

   Moving components or selecting smaller parts increases space and prevents manufacturing defects.

3. Final Answer:

   Adjust component placement or select a smaller capacitor to increase clearance -> Option D

4. Quick Check:

   Fix clearance by moving parts or resizing [OK]

Hint: Move parts or pick smaller ones to fix clearance [OK]

Common Mistakes:

• Ignoring hidden clearance issues
• Trying to fix clearance by changing PCB thickness
• Using solder mask thickness to hide clearance problems