Agree upon the message mentioned by Mr Moses Chan, I do have same kind of
feeling about the reliability test requirement of lead free package. How
would us perform the change to adopt IPC direction without rel. test
requirement.
Nowadays, some of the company is based on individual standard to qualify
lead free package, is that a good trend??
Thanks & Regards
L.W.Foo
Engineer - Advanced Technology
Foo Loke Whong
Carsem Semiconductor Sdn Bhd
Email id : [log in to unmask]
Phone : +(6 05) 5262333 Ext : 530
Fax : +(6 05) 5265333
> ----------
> From: Moses CHAN[SMTP:[log in to unmask]]
> Reply To: Leadfree Electronics Assembly E-Mail Forum.;Moses CHAN
> Sent: Thursday, March 29, 2001 8:20 PM
> To: [log in to unmask]
> Subject: Re: [LF] Join us in an Appeal to the IPC
>
> Hello,
>
> We have the same problem. As an assembly subcontractor, we have numerous
> request to qualify lead free packages, but not so much volume. All of
> these
> is from the telecoms sector. With the competition in the market, it's a
> good
> marketing tool to say you have an enviromentally friendly product.
> However,
> I'm not sure if the consumer would pay addition for this, unless forced to
> by EU directives.
> On another note, there's no clear guidelines on the reliability of these
> products, i.e., peak reflow temperatures for MSLC (245 or 260)?
>
> Moses Chan
> CS2
> Belgium
>
>
> -----Original Message-----
> From: Pamela Dugdale [mailto:[log in to unmask]]
> Sent: Thursday, March 29, 2001 12:48 PM
> To: [log in to unmask]
> Subject: Re: [LF] Join us in an Appeal to the IPC
>
>
> Hi,
>
> As an 'outsider' from the UK I'm wondering whether the US is expecting
> less
> national support and interest with respect to all environmental issues
> following Bush's statement withdrawing from Kyoto? How will this impact on
> Pb-free? Also, in my experience a lot of the Pb-free work has been driven
> by
> the mobile phone companies, especially here in Europe. Will the downturn
> in
> the stock market force these companies to put Pb-free on the back burner
> for
> a while?
>
> Kind regards,
> Pam
>
> Dr. Pamela Dugdale
> Assembly R&D Group
> International Rectifier GB
>
>
>
> >>> Brian Ellis <[log in to unmask]> 03/29/01 08:13am >>>
> It would appear that some of us are talking at cross-purposes. I quote
> below an article which I wrote recently for a technical journal:
>
> I was recently shocked to the core! In fact, I'll use this column to cry
> SCANDAL. And what, may you ask, has caused this outcry? At the time of
> writing (it may have changed since), the proposed European Directive on
> Waste in Electrical and Electronic Equipment, the infamous WEEE, which
> is due to enter into force this year, and which proposes, amongst other
> things, to ban lead in solder as from 1 January 2008, is based on
> entirely false premisses.
>
> Let it be said that I fully support its proposals for recycling, at
> least for those components which can be recycled. I also support the
> notion that European member-nations organise free household collection
> of waste electrical and electronic equipment, although I hae ma doots
> about the enforcement of the proposed minimum of six kilograms per
> household per year. That having been said, I believe that at least 95
> percent of the lead in solder can be easily and even economically
> recovered and recycled (somewhat less with the tin). As the electronics
> industry consumes, in solder, only 0.5 percent of all the lead mined,
> that means that only 5 percent of 0.5 percent will remain on the bits
> and pieces left for disposal, truly a negligible quantity, so why ban
> the stuff?
>
> However, be that as it may, I cannot cry scandal over that, even though
> there are grounds for disagreement. What I can cry scandal about is that
> this proposed directive is purported to be necessary to protect the
> environment. I am all for the protection of the environment. But what I
> have discovered is that no scientific risk assessment of the presence of
> lead in electronics waste has been conducted nor has there been any
> assessment of the environmental consequences of replacing tin-lead
> solder with other alloys. Now, what exactly does this mean? It means
> that our industry is being conned by technocrats and politicians (not to
> mention vested interests who have been very vociferous) into complying
> with measures that will have undoubted negative technical and economical
> effects, for no reason at all. Worse still, it can be shown that there
> will be undoubted serious negative effects on the environment, which the
> persons who are proposing these measures have never even started to
> consider, while the positive effects are practically negligible.
> Unfortunately, space does not permit me to expand all of these in detail
> but we can cite, for example:
> - increased global warming (an estimated conservative global increase of
> 125 *150 MWh of electricity will be consumed annually due to higher
> soldering temperatures)
> - increased water pollution (the presence of lead salts in cleaning and
> rinsing is a good guarantor that water treatment is properly carried out
> by both PCB fab and assembly shops: in some countries, there are no
> regulations for tin salts)
> - increased destruction of tropical rain forests (alluvial tin ore
> extraction in Malaysia, Indonesia and Brazil requires clearing of the
> primary tropical rain forests, with a concomitant risk of loss of
> species, because the quantity of tin required for electronics solder
> will increase by 50 percent)
> Unfortunately, this list is not even exhaustive. Precautionary
> principles are noble, on condition that they are founded on a reasonable
> risk assessment. This has not been done. This is a scandal that must be
> shouted from every rooftop in our industry.
>
> End of quotation
>
> What I fear is that the PCB Fab guys are not bothered by the
> implications on the PCB Assembly ones (and vice versa). We have to take
> a "cradle-to-grave" approach. This means from the moment the tin ore
> (etc.) is collected to the moment that the equipment, having served its
> normal lifetime of use is landfilled/incinerated. WEEE does not do this,
> nor do some correspondents here. Let us take off our blinkers and look
> beyond our small world of immediate activity, to see there is a much
> larger one outside.
>
> Brian
>
> Harvey Miller wrote:
> >
> > March 22, 2001
> >
> > Dear Electronics Industry Colleagues,
> >
> > The IPC through its President, Dennis McGuirk, has stated, "banning lead
> is
> > not based on good science", (EPP, Jan2001, pg 34). With regard to
> banning
> > lead in solder for electronics specifically, in the final analysis it is
> > clearly a bad choice both for the electronics industry and for the
> > environment.
> > While one can easily agree with President McGuirk's assessment, it seems
> > logical that we need a more pro-active policy actively opposing a
> misguided
> > initiative that by all appearances is primarily motivated by marketing
> > opportunism and pays little heed to the needs of the environment or the
> > overall impact of lead-free on it.
> > The IPC, as the leading trade association representing the electronic
> > interconnection industry, should do more in leading the way for
> science-based
> > risk assessment. To that end we are suggesting a modification to the
> current
> > position statement of the IPC as adopted by the board of directors.
> >
> > If you are in support of this premise and are interested in obtaining a
> copy
> > of the present IPC position statement and a copy of the proposed
> alternative
> > statement, please respond.
> >
> > Note that this is primarily an individual based effort and it is based
> on
> > individual conscience and their desire to see that the full impact of
> > lead-free be fully, fairly, honestly and scientifically evaluated before
> we
> > proceed further down this unproven path.
> >
> > Joe Fjelstad and Harvey Miller
> >
> >
> --------------------------------------------------------------------------
> --
> -----
> > Leadfee Mail List provided as a free service by IPC using LISTSERV 1.8d
> > To unsubscribe, send a message to [log in to unmask] with following text
> in
> > the BODY (NOT the subject field): SIGNOFF Leadfree
> > To temporarily stop delivery of Leadree for vacation breaks send: SET
> Leadfree NOMAIL
> > Search previous postings at: www.ipc.org > On-Line Resources & Databases
> >
> E-mail Archives
> > Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
> additional
> > information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
> ext.5315
> >
> --------------------------------------------------------------------------
> --
> -----
>
> --------------------------------------------------------------------------
> --
> -----
> Leadfee Mail List provided as a free service by IPC using LISTSERV 1.8d
> To unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Leadfree
> To temporarily stop delivery of Leadree for vacation breaks send: SET
> Leadfree NOMAIL
> Search previous postings at: www.ipc.org > On-Line Resources & Databases >
> E-mail Archives
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
> additional
> information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
> ext.5315
> --------------------------------------------------------------------------
> --
> -----
>
> --------------------------------------------------------------------------
> --
> -----
> Leadfee Mail List provided as a free service by IPC using LISTSERV 1.8d
> To unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Leadfree
> To temporarily stop delivery of Leadree for vacation breaks send: SET
> Leadfree NOMAIL
> Search previous postings at: www.ipc.org > On-Line Resources & Databases >
> E-mail Archives
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
> additional
> information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
> ext.5315
> --------------------------------------------------------------------------
> --
> -----
>
> --------------------------------------------------------------------------
> -------
> Leadfee Mail List provided as a free service by IPC using LISTSERV 1.8d
> To unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Leadfree
> To temporarily stop delivery of Leadree for vacation breaks send: SET
> Leadfree NOMAIL
> Search previous postings at: www.ipc.org > On-Line Resources & Databases >
> E-mail Archives
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
> additional
> information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
> ext.5315
> --------------------------------------------------------------------------
> -------
>
---------------------------------------------------------------------------------
Leadfee Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Leadfree
To temporarily stop delivery of Leadree for vacation breaks send: SET Leadfree NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------
|
