Homebrew PCBs

http://www.hottconsultants.com/tips.html has a section on how and why of
multi-layer board construction. The layers are generally not added for the
sake of making it easier to connect parts; rather for EMI reduction and
higher frequency circuits. The "PCB Stackup" articles should give you some
pointers on the how and why.

As you appear to be a ham- you may also find "Dipoles for Dummies"
enlightening for both the hobby and PCB design in general.

73
Bill N4BKT

On Mon, Jul 19, 2010 at 8:17 AM, ae5ew <ae5ew.us@...> wrote:

>
>
> I'm not considering doing such a thing. Curious to understand how a
> reliable connection is assured in such a PCB. My experience as a technician
> has exposed me to some through-hole contacts on 2-layer PCBs can sometimes
> be a problem. Some soldering can usually correct that. Vias must be reliable
> for the PCB to be of use. Charles AE5EW
>
>
> --- In Homebrew_PCBs@yahoogroups.com <Homebrew_PCBs%40yahoogroups.com>,
> Dylan Smith <dyls@...> wrote:
> >
> > On Mon, Jul 19, 2010 at 11:56:48AM -0000, ae5ew wrote:
> > > Ok. I admit I'm ignorant when it comes to this subject. How is an IC
> > > lead connected to say layer 8 on a 16 layer PCB.
> >
> > Via a via :-)
> >
> > I presume you're talking about through hole components, in which case
> > the via that forms the hole the IC pin goes through. For SMD, a via must
> > be drilled.
> >
> > On a commercially made board this via is through plated and makes
> > contact with the tracks in the inner layer that you have connected to
> > it. Some brave souls homebrew 4 layer boards, there are various
> > strategies for making contact to inner layers in absence of through hole
> > plating (I presume the hole on the top layer is a little larger so that
> > a wire can be soldered to both the inner layer and outer layer to make
> > the connection).
> >
> > For me a multi layer board normally means fine pitch SMD (already
> > increases the difficulty level in home making a PCB) as well as multi
> > layers, so I just use a commercial board house since two lots of
> > difficult tasks goes from being a fun challenge to frustration! (If push
> > came to shove, I'd consider a 4 layer board where the inner layers were
> > power and ground planes).
> >
>
>  
>


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