Calculating Via Depth and Via Delay

This topic describes how via depth and via delay is calculated.

Via Depth

Via depth is the length in the Z-direction from the middle point of the connected layers. This is illustrated below.

Via Delay

You can calculate via delay using the following formula.

Via delay = D x SQRT(ε) / V

D: Via length
ε: Dielectric constant
V: Velocity of propagation in a vacuum