Layer stack configuration in PCB Design - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define the number of layers in the stack.

PCB Design

layer_stack = {"layers": [1]

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

A10

B4

C8

D6

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing too few layers for complex circuits

Confusing layer count with signal layers only

The layer stack is configured with 6 layers to balance signal integrity and manufacturing cost.

2fill in blank

medium

Complete the code to set the dielectric thickness between layers.

PCB Design

dielectric_thickness = [1]  # in micrometers

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

A200

B150

C100

D250

Attempts:

3 left

💡 Hint

Common Mistakes

Using too thin dielectric causing signal issues

Choosing thickness unrelated to impedance requirements

200 micrometers is a common dielectric thickness to ensure good insulation and impedance control.

3fill in blank

hard

Fix the error in the code to correctly assign the copper thickness.

PCB Design

copper_thickness = [1]  # in micrometers

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

A105

B35

C70

D18

Attempts:

3 left

💡 Hint

Common Mistakes

Using too thick copper increasing cost

Using too thin copper reducing current capacity

35 micrometers (1 oz copper) is the standard copper thickness for most PCB layers.

4fill in blank

hard

Fill both blanks to define the stackup material and its dielectric constant.

PCB Design

stackup_material = "[1]"
dielectric_constant = [2]

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

AFR4

BCEM-1

C4.5

D3.8

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing material names with numeric values

Using incorrect dielectric constants for the material

FR4 is the most common PCB material with a dielectric constant around 4.5.

5fill in blank

hard

Fill all three blanks to configure the layer type, material, and copper weight.

PCB Design

layer_type = "[1]"
layer_material = "[2]"  # material
copper_weight = [3]  # micrometers

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

Asignal

Bprepreg

C35

D100

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing layer types

Mixing thickness units

Incorrect copper weight for signal layers

The signal layer uses prepreg material with 35 micrometers copper weight for standard performance.