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

[Leon Heller]

----- 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!


> ***** High Performance Software Defined Radio Discussion List *****
>
> On 6/17/06, Eric Ellison <ecellison at comcast.net> wrote:
>> ***** High Performance Software Defined Radio Discussion List *****
>
>> Folks!
>
>> Although I posted a 'directed' message regarding Atlas boards I sent. I 
>> will
>> post again here!
>> WARNIING
>
>> DO NOT! Rework Atlas in an elevated temperature environment, like ovens!!
>
> Hi Eric,
>
> You might want to clarify this.  You can solder the Atlas using lead
> based solder paste in a reflow oven.  I think the problem comes in
> when you are using *non-lead* solder paste for RoHS - the process uses
> higher temperatures than the FR4 is supposed to handle.
>
> As I understand it, there is no problem with using lead based solder
> paste methods in the oven or hotplate method with the Atlas - Lyle can
> give us the details and correct me if I am wrong about the 400 board
> Atlas run.

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

73, Leon 


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