Harvey, are you believe Cu is less harmful to the environment? Or human being? The problem is not which element is in use, it is the human being with different personal agenda, with greed, analyst, mine owner, etc included. Of. Course, the few politicians and their hired gun scientists. Let,s get back to the 'TechNet basics. my 2cents.
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----- Original Message -----
From: harvey [mailto:[log in to unmask]]
Sent: Sunday, August 26, 2012 05:20 PM
To: [log in to unmask] <[log in to unmask]>
Subject: Re: [TN] re TIN---an important article
Brian
Whatever the quality of the journalism in Business Week, the article does call attention again to the hypocrisy of the whole lead-free solder premise, does it not? It is just another bit of contrary evidence to that premise. Lead-free solder was not environmentally friendly. On top of that, the enormous cost and reliability penalty of lead-free solder is still weighing on the industry. Now the menace of cratering is added to all the other failure modes, shortening the time till equipment failure.
63-37 solder was effectively outlawed for dishonest reasons in the interest of the tin mining and associated industries.
To me, as an analyst, market researcher, and sideline critic, the answer of what to do about it is easy.
The semiconductor road-map (ITRS) projects 10 nM IC lithography before 2026,
transistors per package like 100 billion, according to Dr. Bill Bottoms who is a participant in ITRS and iNEMI roadmapping. The number of I-Os per package
will not allow room for solder joints period.
Someone has to tell the CEOs of the world's electronic OEMs that SMT has had its time on the main stage. Start on the new manufacturing paradigm. Embedded active and passive components replace solder joints by copper plated vias. The Occam process advances that by separating component and interconnect platforms, freeing each from present constraints, opening the substrate choice to more thermally conductive options.
Now, driven by IC die stacking, the money is forthcoming for Known Good Die infrastructure, removing the last reliability barrier to embedding them.
--- On Sun, 8/26/12, Brian Ellis <[log in to unmask]> wrote:
From: Brian Ellis <[log in to unmask]>
Subject: Re: [TN] re TIN---an important article
To: [log in to unmask]
Date: Sunday, August 26, 2012, 1:31 AM
OK, Harvey. I read the article, which is emotional, bad journalism, full of errors and having little credibility, without denying there is a problem. What do you propose to do about it? Find a tin-free solder? Somebody died the other day from Salmonella poisoning after eating contaminated chicken; do you propose we stop eating chicken? 81,649 people died in China and 136,089 in India last year from traffic accidents; should we stop using cars? The Sayano–Shushenskaya hydroelectric power station accident occurred on 17 August 2009 when turbine 2 of the Sayano–Shushenskaya hydroelectric power station broke apart violently. The turbine hall and engine room were flooded, the ceiling of the turbine hall collapsed, 9 of 10 turbines were damaged or destroyed, and 75 people were killed; should we stop using hydroelectric power?
I agree that it would seem that Indonesian authorities are lax in applying regulations to illegal mining operations (and in many other sectors). There is nothing we can do about it, either individually or collectively. Yes, a 1 kg reel of cored solder may figuratively have blood on a milligram or two, but it also may contain rosin collected illegally under uncontrolled conditions causing harm. And what about miners entombed getting coal? We can't have coal-fired electricity, can we? Mining, whether coal, gold, platinum (to be topical), iron, tin or any other mineral, is a dangerous occupation and deaths are inevitable, even in the best conditions. Some may consider it karma. The risk is undertaken for human greed. In the case cited, the miners earn $5/day; as rice farmers in the same area, they would be lucky to get $1/day and they have to maintain their family and a water buffalo on this. It's a no-brainer for young people who think they know it can't
happen to them.
Brian
On 26/08/2012 04:32, harvey wrote:
> http://www.businessweek.com/articles/2012-08-23/the-deadly-tin-inside-your-ipad
>
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