Electronics Forum | Mon Sep 24 20:33:34 EDT 2001 | davef
Assuming you're seeing this during wave solder, the via acts like a heat pipe conducting 450�F [or whatever] air to your solder balls. Check the fine SMTnet Archives for similar threads and perspective on the direction to take.
Electronics Forum | Fri Sep 27 10:54:55 EDT 2002 | yngwie
Thank you pr. It was much appreciated. Is this mark normally act like a global fiducial/local fiducial for mBGA ? Is this a standard mark that can be read by the placement machine? what is the typical size of this mark ? are they masked ? thank y
Electronics Forum | Fri Aug 06 11:50:22 EDT 2004 | carterhoward
Hello I haven�t seen any spec for the shipment of enclosures I not absolutely positive but if it�s shipping in a metal enclosure that should act as a faraday cage. The assembled enclosure�s we ship are usually just warped in � pink foam. Hope thi
Electronics Forum | Tue Oct 05 01:30:44 EDT 2004 | fastek
The answer is no. It can't be done. Stop acting goofy.....goofy.
Electronics Forum | Tue Dec 07 00:46:34 EST 2004 | Jamstart
Hi, there are many type of lasers and each have its own applications. Have you tried the short pulse laser? I was told that it will have very minimal heat dissipated on the surface. On the other hand, there is also a water assisted laser where the wa
Electronics Forum | Thu Jun 23 19:22:13 EDT 2005 | james
The majority of the time, all 4 lines are running 24/7, but it is a big juggling act with the parts. What�s clean, what can be move to another line etc.
Electronics Forum | Fri Sep 09 11:01:14 EDT 2005 | rob
If the tombstoning is thermal (occuring during reflow) then try slightly reducing the stencil apertures so there is less the paste on the pads, reducing the forces acting on the component. Also take a look at the cooldown profile & making it more
Electronics Forum | Tue Feb 14 10:38:37 EST 2006 | samir
I stand corrected! That's what I get for listening to our drugged up Maintenance guy. He told me, "The suf-FUC-tant acts as a barrier."
Electronics Forum | Sat Jul 29 08:52:09 EDT 2006 | davef
This recipe is nice for leaded soldering. The time above liquidous plus 20*C is too short for mixed alloy soldering. Remember all that nonleaded stuff that you add to the solder acts to increase the liquidous temperature of the alloy. Try slowing
Electronics Forum | Mon Sep 04 10:53:22 EDT 2006 | Thomas
Dear Sir, We produce solder dross reducing Powder and wave oil in India.The powder that really helps (80%) to reclaim good solder from dross and the oil will act as a blanket on top of the molten solder.contact for details metalconnect@vsnl.net with
