Four-layer stack-up design in PCB Design - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define the top layer as the signal layer.

PCB Design

stackup = {"Layer1": "[1]"}

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

ASignal

BGround

CPower

DSilkscreen

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing ground or power layer for the top layer

Confusing silkscreen with signal layer

The top layer in a four-layer PCB stack-up is usually the signal layer to route signals.

2fill in blank

medium

Complete the code to set the second layer as the ground plane.

PCB Design

stackup["Layer2"] = "[1]"

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

ASignal

BGround

CPower

DSolderMask

Attempts:

3 left

💡 Hint

Common Mistakes

Using signal or power instead of ground for Layer 2

Confusing solder mask with internal layers

The second layer in a four-layer PCB stack-up is typically the ground plane for noise reduction.

3fill in blank

hard

Fix the error in the code to assign the third layer as the power plane.

PCB Design

stackup["Layer3"] = [1]

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

A'Ground'

BPower

C"Power"

D"Signal"

Attempts:

3 left

💡 Hint

Common Mistakes

Not using quotes around the layer name string

Assigning wrong layer names

Layer assignments must be strings, so the value should be in quotes.

4fill in blank

hard

Fill both blanks to define the bottom layer as the signal layer and add a solder mask layer.

PCB Design

stackup["Layer4"] = [1]
stackup["SolderMask"] = [2]

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

A"Signal"

B"SolderMask"

C"Ground"

D"Power"

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up ground and signal layers

Forgetting quotes around strings

The bottom layer is usually a signal layer, and solder mask is a separate layer protecting copper.

5fill in blank

hard

Fill all three blanks to create a dictionary representing the full four-layer stack-up with correct layer names.

PCB Design

stackup = {
  "Layer1": [1],
  "Layer2": [2],
  "Layer3": [3]
}

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

A"Signal"

B"Ground"

C"Power"

D"SolderMask"

Attempts:

3 left

💡 Hint

Common Mistakes

Incorrect order of layers

Missing quotes around layer names

The standard four-layer stack-up has Layer1 as Signal, Layer2 as Ground, and Layer3 as Power.