Oh oh noooooo!!!
--- Previous Message in This Thread ---
Subject: Re:[LF] Fodder for Discussion? NTC
From: Whittaker, Dewey (EHCOE) <[log in to unmask]>
To: [log in to unmask]
Date: Tuesday, January 19, 2010 1:38:11 PM
> There'll be the dickens to pay, but it is the best of times; it is the
> wurst of times.
> Dewey
>
> -----Original Message-----
> From: Leadfree [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
> Sent: Tuesday, January 19, 2010 12:55 PM
> To: [log in to unmask]
> Subject: Re: [LF] Fodder for Discussion? NTC
>
> Werner, please accept my apologies, you are absolutely correct. Calling
> them EU weenies shows disrespect to real weenies which I love, no doubt
> a taste that I inherited from my mother, Maggie Ernst. Both her parents
> (my maternal grandparents) were born in or near Vienna.
> I should know better.
> dean
>
>
>
> -----Original Message-----
> From: Leadfree [mailto:[log in to unmask]] On Behalf Of Werner Engelmaier
> Sent: Tuesday, January 19, 2010 1:24 PM
> To: [log in to unmask]
> Subject: Re: [LF] Fodder for Discussion?
>
>
> Hi Dean,
> I object to putting 'EU' and 'weenies' together like this-stick to 'EU
> dummies,' 'EU morons,' 'EU idiots,' etc.
>
> 'Weenies' is a diminutive for 'Wieners', the delicious sausages
> invented by a butcher named 'Frankfurter' in Wien [German for Vienna]
> where they are properly called 'Frankfurters' ,and sold in this country
> as 'hot dogs' having nothing in common with the original Frankfurters
> except the shape. No self-respecting Viennese would do something as dumb
> as banning Pb-from solder.
> Werner from Vienna
>
>
>
>
>
>
> -----Original Message-----
> From: Stadem, Richard D. <[log in to unmask]>
> To: [log in to unmask]
> Sent: Tue, Jan 19, 2010 1:50 pm
> Subject: Re: [LF] Fodder for Discussion?
>
>
> Last week, my 12-year old son's Xbox360 crapped out for the 5th time.
> The first three times, the factory fixed it, the fourth time they
> replaced the Xbox, and this time they directed us to a local game shop
> to have the repair/replacement done. When we went there, the owner
> promptly gave us a new "refurbished" Xbox. When I asked him what
> constituted a refurbishment, he brought me into the back of his shop and
> showed me his used Airvac DRS24, and along the wall, stacked from floor
> to ceiling, were about 200 or more Xbox 360s awaiting rework, excuse me,
> "refurbishment".
> Not knowing that I knew a little bit about BGA rework, the gentleman
> carefully explained to me the complicated nature of the refurbishing.
> How chemical processes (flux), specialized cleaning procedures (water
> wash), something called "re-metallization" (hot air reflow), and many
> other special processes must be followed.
> So I said, "Ok, so you remove the blade from the housing, place it on
> the DRS24, apply flux, bring the nozzle over the part and reflow the
> BGA, clean, inspect, test, and rebox?"
> Needless to say, he looked at me with a little more respect and said,
> "Oh, you must be some kind of engineer." So then we talked, and he
> stated that nearly 100% of the time, with only a few (but very few)
> exceptions, a simple reflow of the BGA is all that is needed to
> "refurbish" the Xbox, and if done properly they can last up to 1 year,
> but seldom longer, due to the heat generated by the BGA during
> operation. He has "refurbished" some blades as many as 6 times in a
> 3-year period.
>
> Had the BGA been 63/37 alloy, soldered with 63/37 solder, this guy would
> not be in business.
>
> So, Lead-free has been good for the American Economy. Should we thank
> the EU weenies, or what?
>
>
> -----Original Message-----
> From: Leadfree [mailto:[log in to unmask]] On Behalf Of Marcus Thompson
> Sent: Tuesday, January 19, 2010 11:25 AM
> To: [log in to unmask]
> Subject: [LF] Fodder for Discussion?
>
> Good day to all.
>
> In light of a recent interchange addressing SAC balls on BGA packages, I
> thought that I'd toss a mass-marketed item out here for discussion: the
> Xbox
> 360. Despite the generally kitsch nature of this product, I believe
> that
> some fruitful insights may be taken from the example nonetheless.
>
> In short, how do we define the billion-dollar lead-free SJ failures
> which
> have plagued this particular specimen? As many have observed concerning
> "green" solder formulations, the joints thus formed are more susceptible
> to
> metallurgical failure modes of various types vs. Sn/Pb. Yet, I have
> gleaned
> that some carefully devised testing (by ostensibly impartial
> researchers)
> has demonstrated the converse; promoting the cause for complete
> replacement
> of Sn/Pb across the board (so to speak).
>
> To sum, apart from whiskering concerns (Swatch?), is there clear
> evidence
> that lead-free solder metallurgies per se are indeed a "non-issue?" If
> so,
> where does the case of the "Xbox" product failures need to be finally
> classified?
>
> Thanks again --
>
> ------------------------------------------------------------------------
> -------Leadfee Mail List provided as a 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/(start) delivery of Leadree for vacation breaks
> send: SET Leadfree NOMAIL/(MAIL)
> Search previous postings at: http://listserv.ipc.org/archives
> Please visit IPC web site
> http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
> information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
> ext.2815
> ------------------------------------------------------------------------
> -------
>
> ------------------------------------------------------------------------
> -------Leadfee
> Mail List provided as a 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/(start) delivery of Leadree for vacation breaks
> send: SET
> Leadfree NOMAIL/(MAIL)
> Search previous postings at: http://listserv.ipc.org/archives
> Please visit IPC web site
> http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for
> additional information, or contact Keach Sasamori at [log in to unmask] or
> 847-615-7100 ext.2815
> ------------------------------------------------------------------------
> -------
>
>
>
> ------------------------------------------------------------------------
> -------Leadfee Mail List provided as a 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/(start) delivery of Leadree for vacation breaks
> send: SET Leadfree NOMAIL/(MAIL)
> Search previous postings at: http://listserv.ipc.org/archives
> Please visit IPC web site
> http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
> information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
> ext.2815
> ------------------------------------------------------------------------
> -------
>
> -------------------------------------------------------------------------------Leadfee Mail List provided as a 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/(start) delivery of Leadree for vacation breaks send: SET Leadfree NOMAIL/(MAIL)
> Search previous postings at: http://listserv.ipc.org/archives
> Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
> -------------------------------------------------------------------------------
>
-------------------------------------------------------------------------------Leadfee Mail List provided as a 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/(start) delivery of Leadree for vacation breaks send: SET Leadfree NOMAIL/(MAIL)
Search previous postings at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-------------------------------------------------------------------------------
|
