kicad-developers team mailing list archive

[José Ignacio <jose.cyborg@xxxxxxxxx>]

Another element of this would be to support an arbitrary amount of stacked
mechanical layers. I've been designing some flexible PCBs lately and using
the user layers to specify stiffeners is a bit clunky. It would be nice if
the 3d renderer could do multiple stacked edges. I've had to make separate
step files and use virtual components to cobble together correct step
output for stiffeners, adhesive pads and liners.

On Fri, Sep 1, 2017 at 1:48 PM, Greg Smith <ecomputerd@xxxxxxxxx> wrote:

> Here are some references to a variety of stackup information:
>
>  # interesting info on cores, prepreg, and foils
>  # https://www.multi-circuit-boards.eu/en/pcb-design-aid/
> layer-buildup/prepreg-core-foil.html
>  # More terminology:
>  # http://www.edn.com/design/pc-board/4424239/PCB-design-basics
>  # PCB manufacturing info from advanced circuits (4pcb):
>  # http://www.4pcb.com/media/building-printed-circuit-board.pdf
>
>
>
>
> On Friday, September 1, 2017, 5:12:35 AM CDT, Ingo Kletti <
> ikletti@xxxxxxxxxxxxxxxx> wrote:
>
>
>
>
> Am 01.09.2017 um 10:06 schrieb jp charras:
> > Could you give a link to a manufactured that explains applications
> (and show a few boards) where
> > different substrates are used.
> From experience I can say that many (non-ceramic) RF materials are
> rather soft (most common a mix of PTFE and glass fiber reinforcement)
> and thin.
>
> In the designs that I worked on , we therefore created 4-layer PCBs with
> a core consisting of more rigid material (most times FR4).
>
> Another mix of materials might be PCBs with a solid metal backing used
> for cooling applications (think LED lighting, motor drivers, etc.).
>
> And another application for mixed materials are flex-rigid PCBs.
>
> While the different PCBs types are not explained in detail, the brochure
> from Optiprint has some photos of complex designs:
>
> http://www.optiprint.ch/pdf/Optiprint_Imagebroschuere_2014_EN.pdf
>
>
>
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