Electronics Forum: pass (Page 135 of 142)

IONIC CLEANLINESS SPEC FOR BARE PWBs

Electronics Forum | Sun May 09 16:25:00 EDT 2004 | gabriele

Military and most commercial standards requires > post-soldered boards to measure less than 10 > �g/in of NaCl (14 when using an Omegameter, 20 > on a Ionagraph, and 37 on a Zero-Ion). > > As Dave > stated, 6.5 �g/in of NaCl is called out in >

SMT EQUIPMENT FOR LOW VOLUME HIGH MIX

Electronics Forum | Tue Apr 29 14:13:52 EDT 2003 | stefwitt

My opinion to hold on to your machines was based on the current market situation. First of all, I don�t believe that a customer with ten boards will go to China for prototype production. Truth is, that the remaining market here is the prototyping mar

Lead Free Solder Wick

Electronics Forum | Fri Mar 10 00:17:47 EST 2006 | Samir

Patrick, My sardonic wit comes from 11 years of being an embattled process guy who�s basically �seen it all� in electronics manufacturing. I�ve been witness to the �Seagull Managers�, uneducated managers lacking credentials, managers with MBAs but

Soft Water Versus Deionized

Electronics Forum | Sat Jan 27 08:45:43 EST 2007 | davef

[clipped] Chemistry of Hard and Soft Water From Anne Marie Helmenstine, Ph.D., Your Guide to Chemistry. Water Works I'm sure you've heard the terms 'hard water' and 'soft water', but do you know what they mean? Is one type of water somehow better th

Competing in the global economy

Electronics Forum | Wed Apr 18 20:41:59 EDT 2007 | Machine Designer

The point is that shift is all about adapting not doom and gloom. BTW: Thanks for the flame and insulting words Brett. Way to hijack a thread that merely pointed to some interesting facts that could create some interesting dialog. I was merely inviti

Epoxy on bottom of SMT component

Electronics Forum | Tue Dec 04 10:30:16 EST 2007 | slthomas

Q: The question I have is do they wet in wave solder, and if they do, why does it matter what happens to them in reflow? A: Yes, but somebody here don't agree with me that the glued part need help from wave to get the good wetting. They are wrong

Question of delamination in PCB

Electronics Forum | Thu May 07 20:28:35 EDT 2009 | davef

From our notes, the following is a series of snips from: "Copper Dissolution in Tin" LJ Turbini, PhD, adjunct faculty member, University of Toronto, Materials Science and Engineering, SMT 2/07 As the solder becomes molten, copper from the board diff

Mirtec programming discussion

Electronics Forum | Fri Nov 05 10:35:18 EDT 2010 | methos1979

This was a great post from another thread here with some tips: Date: November 04, 2010 07:42 PM Author: eadthem Subject: Who has best desktop AOI ? We do almost exclusively SMT parts but for solder with a 45 degree fillet angle use vertical light

Typical placement speeds - please advise

Electronics Forum | Mon Jul 14 11:59:41 EDT 2014 | rgduval

I've primarily used MyData equipment, personally, and, optically centered devices definitely take longer than mechanically centered parts on a MyData, owing to the construction of the machine. With a fixed upward looking camera, the head has to pick

Possibility of a cheaper pick and place machine design?

Electronics Forum | Wed Sep 10 23:06:36 EDT 2014 | andrespena

Sorry 10 days passed before I replied. This happened and that happened and I completely forgot about this forum. But here's my explanation: 1. How to get parts on the board? This is a very good point, and I totally understand why you believe I hav


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