If you have adjacent signal layers on layers 2 3.
Multilayer circuit board design.
Multilayer boards may be constructed using a double sided sub board at the center with single sided sub boards added to each.
Here are some multi layer pcb design tips that may help.
The main consideration when evaluating the need for a multilayer printed circuit board is the function and performance of the design.
Multilayer pcb comes with a combination of one or two layer printed circuit board and features more complex design than double sided pcb.
Number of layers on multilayer board are greater than number of layers on double sided printed circuit board.
A multilayer board is constructed from a number of single sided or double sided sub boards.
Now that your software is set up and you ve checked ahead with the fabrication shop you are ready to design your multilayer printed circuit board design.
Fortunately there are pcb design systems available that already have the tools you need for successful multilayer circuit board design.
Route adjacent signal layers in opposite directions on the printed circuit board.
Orcad pcb designer is the type of advanced system that will give you access to online cad library services board outline creation wizards and manufacturing and documentation generation utilities.
A printed circuit board pcb mechanically supports and electrically connects electrical or electronic components using conductive tracks pads and other features etched from one or more sheet layers of copper laminated onto and or between sheet layers of a non conductive substrate.
Multilayer board helps in increasing the available area for wiring.