SunMan Engineering, Inc

"The Product Engineering, Layout and Prototyping Specialist" Since 1990

Phone: 1(408)441-1500
Email: info@sunmantechnology.com

PCB Stackup Impedance Calculator

Calculates the characteristic impedance per unit length parameters of typical

Some of the common Dielectrics & their values:

Relative Dielectric Constants of substrate materials

Material Dielectric constants
FR4 FibreGlass 4.7
Teflon 2.2
Teflon Glass 2.5
Polymide 3.5
Polymide Glass 4.2

Procedure to use the calculator:

1. Select the number of substrate layers.
2. You will then be presented with a table representing the suggested stack-up for that type of substrate.
3. Modify the variables to examine the effects on the trace characteristic impedance.

Number of physical board layers
4 6 8 10 12

Note: All care has been taken to ensure that the results are correct but no responsibility is taken for any errors.

Warning: " The calculators have been designed to work the best to our knowledge, but we do not take the responsibility of the solutions as they are dependent on the user inputs."

Copyright SunMan Engineering Inc.