- Thu Oct 29, 2015 5:00 am
#185519
Hi all,
I am designing a 4 layer PCB that needs to have 100ohm impedance. I used an online calculator for defining the needed parameters, however, I'd like to make sure that I can define any prepreg thickness to the fab houses, or do they have standard thicknesses?
Thank you in advance
I am designing a 4 layer PCB that needs to have 100ohm impedance. I used an online calculator for defining the needed parameters, however, I'd like to make sure that I can define any prepreg thickness to the fab houses, or do they have standard thicknesses?
Thank you in advance