Homebrew PCBs

----- Original Message ----- 
From: "Dylan Smith" <dyls@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Saturday, March 29, 2008 12:07 PM
Subject: Re: [Homebrew_PCBs] Immersion silver


> On Fri, 28 Mar 2008, Leslie Newell wrote:
>
>> Immersion silver works great if you use it fairly quickly. However if
>> the boards stand for more than a month or so, the silver oxidises and
>> they become quite difficult to solder.
>
> Incidentally, I'm just about to (once I've thoroughly checked the PCB
> layout for correctness!) send off a 4 layer PCB to PCB Train. How does
> immersion silver hold up on edge connectors? I think it's the only plating
> they offer for 4 layer boards.

I think it's only 1 micron thick, so it'll get scraped off quickly. You 
really need gold plating on them, or use an indirect connector.

Leon
--
Leon Heller
Amateur radio call-sign G1HSM
Yaesu FT-817ND and FT-857D transceivers
Suzuki SV1000S motorcycle
leon355@...
http://www.geocities.com/leon_heller