We spend a lot on research since years back, green is already started, but like a tanker, takes time to turn. What I responded to was mixing. Theoretically, metallurgical mixtures with Sn,Pb,Ag,Cu etc as ingredients, can create weak zones in the solder joints, and reduce fatigue and life. What I said is that we have not seen many such bad cases yet. A well known fact is, that you need high temperature and long solder time in order to reduce such local zones. Like making many haute cuisine sauces: if you don't know the trick, there will be no emulsion, but a catastrophic separation (sorry for the parabel, I am hungry just now, few minutes to lunch...)
Ingemar
-----Original Message-----
From: Hughes, Chris [mailto:[log in to unmask]]
Sent: den 7 december 2004 11:36
To: TechNet E-Mail Forum; Ingemar Hernefjord (KC/EMW)
Subject: RE: [TN] Lead-free, and not lead-free...
OK so you guys are going to have major issues if and when you change over to lead free operations. Which we can sympathise with, but the longer you leave it the more hurdles you will encounter.
I have been tracking the development of market and legislative drivers surrounding the electronics industry for the past three years, so I know a fair bit about the ways out of compliance with lead-free etc.
I'll let you all in on a big secret, unless your products are exempt there are not ways out!
The bottom line is that legislative drivers such as the WEEE & RoHS pose the biggest ever threat to the electronics industry because their no escape, and the domino effect has already started (Japanese corporate polices, California & Maine Consumer products targeted etc).
And YES it's only going to get worse.
FACT: As we move towards key dates the value of leaded materials used in electronic & electrical equipment will increase, and will much harder to obtain.
FACT: If your refuse to go 'lead-free' (RoHS compliant) for products put on the EU market after July 2006, your products could be banned from sale across the EU.
Start taking the drive to reduce toxic material inclusion in the electronics industry seriously, and make sure the resources are in place to ensure you remain competitive.
This is not simply an issue of greening the electronics supply chain, it is a major business threat to everybody in the supply chain to the final products put on sale, both business to householder, and business to business.
FALSE: Only consumer products will be affected by the legislative driver to switch over to 'lead-free'.
I welcome all thoughts and additional suggestions.
Chris
Christopher Hughes
Environmental Scientist
[log in to unmask]
-----Original Message-----
From: Ingemar Hernefjord (KC/EMW) [mailto:[log in to unmask]]
Sent: 07 December 2004 07:57
To: [log in to unmask]
Subject: Re: [TN] Lead-free, and not lead-free...
Mike,
blessed be the innocent, that have not yet seen the dark side..
Inge
PS. we are still unaware, have seen no problems until this day...will the heaven suddenly
fall upon our heads (Majestix of Gallia)
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Mike Fenner
Sent: den 6 december 2004 14:57
To: [log in to unmask]
Subject: Re: [TN] Lead-free, and not lead-free...
You will need excellent controls, preferably even a separate building ☺. Customer feedback is that trying to run two lines adjacently, usually in the interim to full change over can be a hair loosing experience, with frequent cross over, and do not wish it on others. A single bar of solder can tip your wave pot over the 0.1% Pb level, putting leaded paste on the unleaded line can be undetectable [unless you have a handy spectrometer], putting leaded components on the unleaded line may damage them thermally and so on.
Regards
Mike Fenner
Indium Corporation
T: + 44 1908 580 400
M: + 44 7810 526 317
F: + 44 1908 580 411
E: [log in to unmask]
W: www.indium.com
Pb-free: www.Pb-Free.com
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Sunday, December 05, 2004 1:21 AM
To: [log in to unmask]
Subject: [TN] Lead-free, and not lead-free...
Hi All!
I've got a problem that I've been worrying about all weekend. It may come to
pass that we will be building both lead-free, and standard 63/37
stuff...whoa is me.
I'm interested in stories from those that have done that...what the hell did
you do?
Is this something that can be done? It probably can, but me, being the
pessimistic sort, thinks that you're just asking for trouble when you try to mix
the two...
-Steve Gregory
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