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January 1999

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From:
Circuit Connect <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 29 Jan 1999 12:27:16 -0500
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Hello Gary,

Your issue is essentially the same as Steve Gregory's, so my answer is
essentially the same.

The issue of lead removal is over-played. The Industry isn't focused on lead
removal; the industry is really focused on planarity. We want a flat pad to
solder to - period. FLAT is the big 4-letter "F" word around town today.
"What'll get me flat?" That's the zillion-dollar question. That's what we're
debating.

Not so long ago HASL was the single answer to moving PCB manufacturers away
from tin/lead reflow circuitry to selective solder coatings (SMOBC). Today
we're faced with many alternatives to HASL, but unlike the transition from
Reflow to HASL I don't believe there's going to be a single answer.
Gold...silver...OSP...white tin...palladium  -  whichever you pick  -  one
thing is for certain: It won't be a solder alloy. And THAT means it'll be
lead-free, so that along with the new technology comes an environmental
bonus.

But please don't tell the EPA: Let 'em think we're up all night just trying
to get the lead out.

Cheers!

Bob Lazzara
Circuit Connect Tech Support
Georgia Service Bureau

TEL: 800.560.9457  FAX: 888.453.0520  BBS: 603.889.5385
alternate eMail: [log in to unmask]

-----Original Message-----
From: Gary Camac <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Saturday, January 30, 1999 10:56 AM
Subject: Re: [TN] Removal of Lead


>    Why are we worrying about the lead in electronics assemblies leaching
into the ground water from dumps,
>when we shouldn't be throwing our electronic consumables there in the first
place.  Our global societies
>and various governments would be better off putting their efforts towards
research in recycling.   Wouldn't
>it be great if it were more efficient to recycle all of the metals
contained in these assemblies rather
>than mining and refining replacement materials from our limited natural
resources?  I guess when our
>descendents start running out of natural resources they can start mining
our dumps.
>
>   There... I feel a lot better.  I'll get off my soapbox now.
>
>Gary Camac

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