Why design rules prevent manufacturing defects in PCB Design - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if the trace width meets the minimum design rule.

PCB Design

if trace_width [1] min_width:
    print("Trace width is acceptable")

Drag options to blanks, or click blank then click option'

A>=

B<

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>=' causes acceptance of too narrow traces.

The trace width must be greater than or equal to the minimum width to avoid defects.

2fill in blank

medium

Complete the code to verify if the spacing between pads is sufficient.

PCB Design

if pad_spacing [1] required_spacing:
    print("Spacing is sufficient")

Drag options to blanks, or click blank then click option'

A>=

B<

C!=

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<=' allows spacing that is too small.

Pad spacing must be greater than or equal to the required spacing to prevent shorts.

3fill in blank

hard

Fix the error in the code that checks via hole size against the minimum drill size.

PCB Design

if via_hole_size [1] min_drill_size:
    print("Via hole size is valid")

Drag options to blanks, or click blank then click option'

A<

B<=

C==

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' or '<=' allows holes that are too small.

The via hole size must be greater than or equal to the minimum drill size to avoid manufacturing issues.

4fill in blank

hard

Fill both blanks to ensure the solder mask opening is correct.

PCB Design

if solder_mask_opening [1] pad_size and solder_mask_opening [2] max_opening:
    print("Solder mask opening is within limits")

Drag options to blanks, or click blank then click option'

A>=

B<=

C<

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' for the first comparison allows too small openings.

The solder mask opening must be at least the pad size and not exceed the maximum opening to prevent defects.

5fill in blank

hard

Fill all three blanks to validate component placement coordinates.

PCB Design

if [1] >= min_x and [2] <= max_x and [3] >= min_y:
    print("Component placement is valid")

Drag options to blanks, or click blank then click option'

Acomponent_x

Ccomponent_y

Dcomponent_z

Attempts:

3 left

💡 Hint

Common Mistakes

Using Z coordinate which is irrelevant for 2D placement.

Component X coordinate must be between min_x and max_x, and Y coordinate must be at least min_y for valid placement.