[hpsdr] Warning on Atlas! NO HIGH TEMP WORK!

[David Proctor]

 This months IET review (used to be called IEE review) has an article about
this very subject.

"...laminates - even those that pass the stringent FR4 test for quality -
are generally unable to withstand the much higher temperatures for lead free
solders..."

However this is written by a rep from the PCB industry who may just (and I
am being cynical here) be trying to justify higher spec/cost processes.

In any event I shall be happy to manually add my own 60/40 to these boards
and heartily thank all those (particularly the select few) who are
organising this project and carrying it forwards.

David
F5VHI


On 6/18/06, Leon Heller <leon.heller at bulldoghome.com > wrote:
>
> ***** High Performance Software Defined Radio Discussion List *****
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> ----- Original Message -----
> From: "Philip Covington" <p.covington at gmail.com>
> To: "Eric Ellison" < ecellison at comcast.net>
> Cc: "High Performance Software Defined Radio Discussion List"
> <hpsdr at hpsdr.org >
> Sent: Saturday, June 17, 2006 11:18 PM
> Subject: Re: [hpsdr] Warning on Atlas! NO HIGH TEMP WORK!


snip

The temperature isn't very much higher for Pb-free solderand board
> manufacturers in Europe still use FR4.
>
> 73, Leon
>
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