Electronics Forum: pass (Page 105 of 142)

Re: paste release from stencil, and volume calculation

Electronics Forum | Tue Nov 09 17:12:38 EST 1999 | Dave F

Steve: Addressing your points: 1 FINE PITCH APERTURES Electropolishing Laser Cut Stencils: Laser cut should not requiring polishing. Geesh, how much money do you have for stencils? ;-) Oval Shaped Apertures: Pass. What do you expect to gain f

Re: ESD mats

Electronics Forum | Wed Oct 27 22:58:56 EDT 1999 | Jeff Sanchez

Hany, John is right! How do I know cause I have a metal wire floor. I was faced with the same problem you are faced with now and the price was up there. I had one advantage, My floors where raised wood when we got the shop. This reduced the fati

More informations on water clean for CSP/BGA package

Electronics Forum | Wed Oct 06 00:26:04 EDT 1999 | Karlin

Hi, Help! Could anyone help to enlighten me on this? Question: If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a normal water cl

Re: More informations on water clean for CSP/BGA package

Electronics Forum | Wed Oct 06 08:41:42 EDT 1999 | Dave F

Hi, Help! Could anyone help to enlighten me on this? Question: If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a n

Re: MoonMan rantings in SMT Express

Electronics Forum | Thu Sep 16 03:16:21 EDT 1999 | Brian

Good people, and bad or otherwise afflicted, For those of you having enormous time avaialable to read my rantings in the SMT Express, please pardon the font situation. It ain't my fault, maybe, and Mike is not to blame. Something gets lost in

Re: Solder Balls on end of long pins

Electronics Forum | Thu Sep 09 10:34:02 EDT 1999 | John Thorup

I am wave soldering a single sided through hole PCB array with (6) .040" round diameter pins that sit .5" off the PCB, and .080" apart. The problem being experienced is that solderballs are appearing on the end of the pins. I have tried decreasin

Re: BGAs and vapor phase

Electronics Forum | Mon Jul 19 11:50:47 EDT 1999 | Mario

Hi, SMTASSY that�s what we do, soldering our double-sided-finepitch-BGA-and all-the-other-stuff-boards in vapourphase because it�s the only thing we have. First, we do not do real series produktion, only prototyping up to sometimes 20 uni

Re: Stripping Magnet Wire

Electronics Forum | Fri Jul 16 21:56:04 EDT 1999 | Jeff Sanchez

I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys. What is it you're trying to do? D

Re: Criterion of PCBA bending degree

Electronics Forum | Thu Jun 10 12:05:22 EDT 1999 | Deon Nungaray

Hello all! Recently we got a problem about the Funtional test. Some boards passed tests by using the auto-fixture(vacuum), but failed by using manual test fixture(need to plug CPU, DIMM etc.). The error symptom is no picture. We doubt it's th

Re: Criterion of PCBA bending degree

Electronics Forum | Fri Jun 11 01:40:40 EDT 1999 | Gyver

Hello all! Recently we got a problem about the Funtional test. Some boards passed tests by using the auto-fixture(vacuum), but failed by using manual test fixture(need to plug CPU, DIMM etc.). The error symptom is no picture. We doubt it'


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