<div>I may well be unduly sceptical but I suspect the PCB community are doing a hardware version of theY2k scare to justify all sorts of extra work/expense. </div>
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<div>David</div>
<div>F5VHI</div>
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<div><span class="gmail_quote">On 6/18/06, <b class="gmail_sendername">Leon Heller</b> <<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:leon.heller@bulldoghome.com" target="_blank">leon.heller@bulldoghome.com
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<div style="FONT: 10pt arial">----- Original Message ----- </div>
<div style="BACKGROUND: #e4e4e4; FONT: 10pt arial"><b>From:</b> <a title="d.c.proctor@gmail.com" onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:d.c.proctor@gmail.com" target="_blank">David Proctor</a>
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<div style="FONT: 10pt arial"><b>To:</b> <a title="hpsdr@hpsdr.org" onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:hpsdr@hpsdr.org" target="_blank">High Performance Software Defined Radio Discussion List
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<div style="FONT: 10pt arial"><b>Sent:</b> Sunday, June 18, 2006 9:54 AM</div>
<div style="FONT: 10pt arial"><b>Subject:</b> Re: [hpsdr] Warning on Atlas! NO HIGH TEMP WORK!</div>
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<div> This months IET review (used to be called IEE review) has an article about this very subject.</div>
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<div>"...laminates - even those that pass the stringent FR4 test for quality - are generally unable to withstand the much higher temperatures for lead free solders..."</div>
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<div>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.</div>
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<div>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.</div>
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<div><font face="Arial" size="2">I don't understand that. It isn't "much higher", it's only a few degrees. I just had a look at this Altera document:</font></div>
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<div><font face="Arial" size="2"><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://www.altera.com/literature/an/an353.pdf" target="_blank">http://www.altera.com/literature/an/an353.pdf</a></font></div>
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<div><font face="Arial" size="2">which confirms it.</font></div>
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<div><font face="Arial" size="2">73, Leon</font></div>
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