RoHS and Lead-Free Soldering Information
There is much discussion
worldwide regarding RoHS and WEEE and the
impacts on the reliability and cost to manufacturing electronics
"Take some more tea," the March
Hare said to Alice, very earnestly.
"I've had nothing yet,"
Alice replied in an offended tone:
"so I can't take more."
mean you can't take less," said the
Hatter: "it's very easy to take more
Here are some useful links
regarding the issues (and insanity) with lead free finishes and
soldering process issues. (Check back often
for more additions to the list.)
Tech firms face EU toxics test -
Limits on the use of hazardous materials
pushes US electronic makers to innovate -
By Hiawatha Bray, Globe Staff |
Get the Lead Out - Mindless
environmentalism threatens to undermine
electronics industry - Mark Bergin - World
Magazine, May 06, 2006, Vol. 21, No. 18|
John Burke's PUSH BACK - The Truth
about RoHS and lead free soldering... -
John Burke's web BLOG regarding Lead free
and the head long rush to react to the EU
RoHS requirements for no lead in solder.|
|A white paper by Dave Hillman of
Rockwell Collins was first presented at the
Conference Wednesday May 25th, 2005 in
Toronto regarding the soldering of Pb free
solder balls on BGA packages with tin/lead
solder. His findings and research show this
is not a viable solution... the article is
well worth reading and explains the issues
with lead-free solder balls and conventional
Photo by permission, courtesy of Dave Hillman,
CMAP, and Rockwell Collins
"The Impact of Reflowing A Pbfree Solder
Alloy Using A Tin/Lead Solder Alloy Reflow
Profile On Solder Joint Integrity",
Dave Hillman, CMAP/Rockwell Collins
To download a zipped copy of this
white paper click here ---->
Issues and questions with
changing to the lead-free process for
The banning of lead
in solder has necessitated the need for
businesses to invest in new, hot-air
soldering ovens to heat the lead-free
solder to a much higher temperature...
This results in greater energy use,
generating more carbon emissions rather
than less... i.e. fossil fuels are
burned to make the electrical energy
that runs these processes...
What are the effects
of mining the raw materials -
with what environmental results?
What happens to the
electronics circuits when the Tin/lead
solder is replaced with SAC and other
Regarding the use of silver and
gold in solder... What effects will the
increased amounts of these materials
being supplied to the mass market for
The refining of these
materials uses poisonous chemicals...
Hydrogen Cyanide, Sulfur anhydride,
Carbon monoxide and Nitrogen oxide,
Carbon dust, Ore dust, Non organic Dust
and Chlorine vapors (fumes) are
released into the atmosphere...
with the recent increase in unregulated
manufacturing in Africa, Latin America,
China, India, and other less regulated
countries without proper waste
treatment, what will the level of
pollutants from industrial waste rise
does the lead free movement have on
What about the
levels of these chemicals in our oceans
and rivers getting into our imported
Who will the
world hold responsible for the results
of this legislation?
From an Engineer's Point of
A pastor, a doctor and an engineer were
waiting one morning for a
particularly slow group of
The engineer fumed, "What's with
these guys? We must have been
waiting for 15 minutes!"
The doctor chimed in, "I don't know, but I've
never seen such
The pastor said, "Hey, here comes the greens
have a word
"Hi George! Say, what's with that group ahead
of us? They're rather
slow, aren't they?"
The greens keeper replied, "Oh, yes, that's a
group of blind
firefighters. They lost their
sight saving our clubhouse from a fire
last year, so we always let them
play for free anytime." The group was
silent for a moment.
The pastor said, "That's so sad. I think I
will say a special prayer
for them tonight."
The doctor said, "Good idea. And I'm going to
contact my ophthalmologist
colleague and see if there's
anything he can do for them."
The engineer thought for a moment and said,
"Why can't these guys play at night?"