[tinwhiskers] Re: AW: [RoHSUSAPushback] Connection failure in the super collider

  • From: engelmaier@xxxxxxx
  • To: tinwhiskers@xxxxxxxxxxxxx
  • Date: Tue, 07 Oct 2008 10:43:54 -0400

On the other hand, they may not have sufficiently the thermal contraction mismatch between the connector and the PCB (or whatever it is soldered to).

Werner


-----Ursprüngliche Mitteilung-----
Von: Klaus Reindl <klaus-reindl@xxxxxxxxxxx>
An: RoHSUSAPushback@xxxxxxxxxxxxxxx; 'Leadfree' <Leadfree@xxxxxxx>; 'TechNet' <TechNet@xxxxxxx>; tinwhiskers@xxxxxxxxxxxxx
Verschickt: Di., 7. Okt. 2008, 8:21
Thema: [tinwhiskers] AW: [RoHSUSAPushback] Connection failure in the super collider

John,
 
I can imagine what are you expecting:
The connection failing had been done with Pb-free solder, such as SAC type.
 
I am not sure. Work on the Super Collider might have started before RoHS becoming effective.
Besides, the whole application is exempt from it.
Finally, considering the really low temperatures in the collider ring tunnel,
Tin Plague may be the problem one should have considered possible.
 
Anyway, as you say, an 8D report on this gigantic solder joint issue—costing Millions—
would be utmost interesting.
Possibly, with the power of the Group behind you, you could get a copy?
 
Best regards, Klaus
 
Klaus G. Reindl
rRC
Reliable Reliability Consulting
Seitenhalde 108/2
D 72793 Pfullingen
xx49 7121 799533
 

Von: RoHSUSAPushback@xxxxxxxxxxxxxxx [mailto:RoHSUSAPushback@xxxxxxxxxxxxxxx] Im Auftrag von John Burke
Gesendet: Montag, 6. Oktober 2008 23:32
An: Leadfree; TechNet; tinwhiskers@xxxxxxxxxxxxx; RoHSUSAPushback@xxxxxxxxxxxxxxx
Betreff: [RoHSUSAPushback] Connection failure in the super collider
 
Wonder if we will ever get a failure analysis on this. Interesting that the whole thing is kept super cold:
 
Link is here:
 
 
 
John Burke
 
(408) 515 4992
 

AOL eMail auf Ihrem Handy!Ab sofort können Sie auch unterwegs Ihre AOL email abrufen. Registrieren Sie sich jetzt kostenlos.

Other related posts: