02-26-2014 05:45 AM
I have to design footprint of microSd card connector whose datasheet I have attached. Connector which I m using is on page 5.
I have two issues:
1. How to draw pin as marked in red circle on left. How to mae it in ultiboard.
2. The right hatched area. Datasheet says this is "no conductive traces". I want to add such a proviison in footprint that even by mistake no one be able to draw trace in this protion while designing PCB.
What's its purpose anyway??
03-13-2014 09:44 AM
Hi,
Usually when a manufacturer asks you not to put any traces in a certain area,
that is because a metal part of your component (the metal case of your SD card holder) will be close to the surface.
The (usually) green solder mask is not meant to be an isolator, and therfore you might get shorts towards traces running below.
You can forbid that by adding a keep-out area layer on the concerning copper layer (usually the top layer)
This way routing across that area will not work, or result in DRC faults
Good luck, sorry for the late answer..
Johan