Clearance rules for different nets in PCB Design - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the clearance for net class 'Power' to 0.2 mm.

PCB Design

set_clearance(net_class='Power', clearance=[1])

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

A20

B2.0

C0.02

D0.2

Attempts:

3 left

💡 Hint

Common Mistakes

Using too large or too small clearance values like 20 or 0.02.

The clearance for the 'Power' net class is set to 0.2 mm, which is a typical value for power nets.

2fill in blank

medium

Complete the code to apply a clearance rule only between 'Signal' and 'Ground' nets.

PCB Design

apply_clearance_rule(nets=['Signal', 'Ground'], clearance=[1])

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

A0.005

B0.05

C0.5

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing clearance values that are too small causing shorts or too large wasting space.

The clearance between 'Signal' and 'Ground' nets is set to 0.5 mm to ensure safe spacing.

3fill in blank

hard

Fix the error in the clearance rule that sets clearance for 'HighSpeed' nets to 0.1 mm but uses wrong syntax.

PCB Design

set_clearance(net_class='HighSpeed', clearance=[1] mm)

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

A0.1

B'0.1'

C0,1

D0.1mm

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around numbers, commas instead of dots, or including units inside the parameter.

The clearance value should be a number without units inside the function call. '0.1' as a string or '0,1' with comma are incorrect.

4fill in blank

hard

Fill both blanks to define clearance rules for 'Power' and 'Signal' nets with 0.3 mm and 0.1 mm respectively.

PCB Design

set_clearance(net_class='Power', clearance=[1])
set_clearance(net_class='Signal', clearance=[2])

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

A0.3

B0.1

C0.05

D0.5

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping clearance values between net classes or using values too small for power nets.

Power nets get 0.3 mm clearance for safety, signal nets get 0.1 mm for compact routing.

5fill in blank

hard

Fill all three blanks to create clearance rules for 'HighSpeed', 'Power', and 'Ground' nets with 0.1 mm, 0.25 mm, and 0.15 mm respectively.

PCB Design

set_clearance(net_class='HighSpeed', clearance=[1])
set_clearance(net_class='Power', clearance=[2])
set_clearance(net_class='Ground', clearance=[3])

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

A0.1

B0.25

C0.15

D0.05

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up clearance values or using values that are too large or too small for the net class.

HighSpeed nets require tight clearance of 0.1 mm, Power nets need 0.25 mm, and Ground nets have 0.15 mm clearance.