Electronics Forum | Fri Oct 13 10:35:06 EDT 2006 | patrickbruneel
I just hope that lead-free alloys will only be used in tropical climates and above 13 C. Check here: http://materials.open.ac.uk/srg/srg_tp.htm Patrick
Electronics Forum | Fri Oct 13 11:55:23 EDT 2006 | patrickbruneel
I just hope that lead-free alloys will only be used in tropical climates and above 13 C. Check here: http://materials.open.ac.uk/srg/srg_tp.htm Patrick
Electronics Forum | Tue Mar 19 07:48:26 EST 2002 | PeteC
Have QFP at o.5mm pitch with leads too oxidized for the flux in the paste to de-oxidize(in stock for boo koo time). I saw three companies on the Internet that can "tin" (solder coat) the leads. Does anybody have any experience with having this done t
Electronics Forum | Tue Dec 10 16:30:44 EST 2002 | Randy Villeneuve
Tin is pretty standard. I would doubt your leads are only Nickel plated as Nickel will oxidize very quickly.
Electronics Forum | Tue Mar 19 14:23:44 EST 2002 | caldon
PETE - Since you are local to ACI/EMPF you can take a run over there and speak with Greg Parks,PhD on ROSA. His phone number is 610-362-1200 x 267 or email gparks@aciusa.org. This method is much better than the "re tinning". They can actually revert
Electronics Forum | Thu Mar 28 11:06:49 EST 2002 | Tony Fox
Our company carries out this service for major OEM and CEM's Our web site address is http://www.retronix.co.uk Every device after it has been re-tinned gose throught a vision inspection system were it is inspected for coplinarity etc, we also re-ball
Electronics Forum | Fri Feb 19 02:11:11 EST 1999 | Pete Sorenson
| During inspection and test we find leads which do not get soldered. Some are because of insufficient paste, but with others everything looks right. This will only happen on 1 to 2 pins, and it is not isolated to a specific type of ic or location o
Electronics Forum | Tue Feb 27 18:16:42 EST 2001 | davef
I have never seen excess tin [heard of it, just never seen it]. Excess lead yes, but tin no. See, tin oxidizes faster than lead. This means that dross has a higher tin content than the solder in the pot. So, with a very high dross machine, we regul
Electronics Forum | Sun May 30 08:50:42 EDT 1999 | Dave F
| Yes l know this problem keeps cropping up on the forum but l've missed some of the follow-ups. | | Our problem is that the lifting only occurs on 3% of production so actually detecting an improvement is difficult. We're actually having to inspect
Electronics Forum | Fri May 28 16:30:39 EDT 1999 | JohnW
| Yes l know this problem keeps cropping up on the forum but l've missed some of the follow-ups. | | Our problem is that the lifting only occurs on 3% of production so actually detecting an improvement is difficult. We're actually having to inspect
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