Via size and drill diameter in PCB Design - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to calculate the drill diameter for a via given the via size.

PCB Design

drill_diameter = via_size [1] 0.2

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

A-

B/

C*

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using addition instead of subtraction, which makes the drill diameter too large.

The drill diameter is typically smaller than the via size by a fixed amount, so we subtract 0.2 mm.

2fill in blank

medium

Complete the code to calculate the annular ring width by subtracting drill diameter from via size and dividing by 2.

PCB Design

annular_ring = (via_size [1] drill_diameter) [2] 2

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

A-

B+

C*

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using addition instead of subtraction, or multiplying instead of dividing.

The annular ring is the difference between via size and drill diameter, divided by 2.

3fill in blank

hard

Fix the error in the code to correctly calculate the drill diameter as 0.3 mm less than the via size.

PCB Design

drill_diameter = via_size [1] 0.3

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

A+

B-

C*

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using addition which increases drill diameter incorrectly.

Drill diameter should be smaller than via size, so subtract 0.3 mm.

4fill in blank

hard

Fill both blanks to calculate the annular ring width correctly.

PCB Design

annular_ring = (via_size [1] drill_diameter) [2] 2

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

A-

B+

C/

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up addition and subtraction or multiplication and division.

Subtract drill diameter from via size, then divide by 2 to get annular ring width.

5fill in blank

hard

Fill all three blanks to calculate the drill diameter and annular ring width correctly.

PCB Design

drill_diameter = via_size [1] 0.25
annular_ring = (via_size [2] drill_diameter) [3] 2

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

A-

B+

C/

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using addition instead of subtraction, or multiplication instead of division.

Drill diameter is via size minus 0.25 mm. Annular ring is (via size minus drill diameter) divided by 2.