The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl Design >> RF Design >> what is the thickness of each layers of 4 layer 0.062 inch? https://designers-guide.org/forum/YaBB.pl?num=1282525833 Message started by liletian on Aug 22nd, 2010, 6:10pm |
Title: what is the thickness of each layers of 4 layer 0.062 inch? Post by liletian on Aug 22nd, 2010, 6:10pm Hi Guys I am thinking to use advanced circuit (4pcb.com) service to make tranmission line (MLIN 50 Ohms). However, I can not find info on each layers. If anyone can give me a link or supply info on thickness of each layer, it will be greatly appreciated. I found the following info on the website. 4-Layer PCB - 0.062" finished thickness Layer 1 - Copper - 0.0014" thick (1 oz. copper weight) Laminate (prepreg) - 0.0115"-0.0129" thick - Dielectric Constant of 4.6 Layer 2 - Copper - 0.0014" thick (1 oz. copper weight) Core material - 0.028" thick - Dielectric Constant of 4.7 Layer 3 - Copper - 0.0014" thick (1 oz. copper weight) Laminate (prepreg) - 0.0115"-0.0129" thick - Dielectric Constant of 4.6 Layer 4 - Copper - 0.0014" thick (1 oz. copper weight) Please comments how accurate it is. I added all the layer's thickness together and found it is less than 0.06 inch. thanks |
Title: Re: what is the thickness of each layers of 4 layer 0.062 inch? Post by loose-electron on Aug 31st, 2010, 10:42am contact the manufacturer..... |
Title: Re: what is the thickness of each layers of 4 layer 0.062 inch? Post by rfcooltools.com on Sep 1st, 2010, 1:22pm liletian, Around 50 to 60 mils is pretty common for a four layer pcb, Remember that the inner copper layers don't add total height since the prepreg fills the space around the conductor. http://rfcooltools.com |
The Designer's Guide Community Forum » Powered by YaBB 2.2.2! YaBB © 2000-2008. All Rights Reserved. |