[hpsdr] Warning on Atlas! NO HIGH TEMP WORK!
Philip Covington
p.covington at gmail.com
Sat Jun 17 15:11:57 PDT 2006
On 6/17/06, KD5NWA <kd5nwa at cox.net> wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> One question, why? A board with SMT components but can't take SMT soldering
> temperatures, that is bizarre. Or a decision made by a select few.
OK, calm down. We know you want to use your oven and it still is possible.
> By the way the fiberglass can take it, it's the glue that likes to melt and
> let go of the layers.
>
> I do hope that future boards full of SMT components are going to use epoxy
> rated for SMT work.
>
The boards were made so they would be RoHS compliant. I believe the
oven soldering process for non-lead solder paste uses much higher
temperatures. This requires much high temperature fiberglass and that
is not what was used on Atlas as I understand it.
If you are using leaded solder paste then you don't have this problem.
The boards are FR4 (correct me if I am wrong Lyle) so you can process
these like any other FR4 boards when using non-RoHS methods.
73 de Phil N8VB
1150582317.0
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