Electronics Forum: soldering (Page 2006 of 2103)

Re: Solderability of BGA and PCB

Electronics Forum | Mon Nov 27 19:32:02 EST 2000 | Michael Parker

Prof. Whoopee - amazing facts that you find on your 3-D BB, it has completely confounded my comrade, Chumley. Plainly spoken that around the SF Bay Area a.k.a. Silicon Valley(ever hear of the famous SF Fog?)during the winter months, near the coast a

Re: Accepting Stencils

Electronics Forum | Thu Nov 16 22:01:16 EST 2000 | Early Moon

I promised never to do this - BUT only for you needy folks when I have nothing else to do. And Dave's basically a good person though not as needy as most really needing this stuff. 1) Ensure internal Gerber data really matches board and stencil (Ger

Re: How to do with tombstoning for component '0402'

Electronics Forum | Mon Nov 06 10:29:28 EST 2000 | Dean Stadem

All of the replies have merit. Here is another one. Because the cause of the tombstoning is wetting forces that are imbalanced, and one end wets faster or more readily than the other, the 0402 lifts up on that end easily because of its low mass. Incr

Re: World Class: Is it a philisophical question?

Electronics Forum | Tue Oct 10 08:51:26 EDT 2000 | John

Thanks for the responses, and I tend to agree. I would much rather go through a more structured continuous improvment process (set goals, meet them, set new goals and so on). Our company is rather small and made the jump from all through hole to mi

Re: Capability Study for Solder Printing Process

Electronics Forum | Tue Jan 23 22:38:43 EST 2001 | rpereira

I have recently completed a HUGE screen-printing DOE. I used Taguchi methodology and man I got good results! Here is what I learned for what it's worth: (p.s. to the MPM apps guy I sent a copy to Tim Gillis, Lou Fuda, etc...) EFab vs. Laser: EFab

Re: De-wetting on Immersion Silver finish board

Electronics Forum | Fri Aug 25 05:23:46 EDT 2000 | Wolfgang Busko

Hi Murad, like with many other questions it�s hard to judge without seeing the effect. Assuming that this site you�re talking about is well equiped with knowledge and that they handle their processes normally to everybody�s satisfaction it�s obvious

Re: Is AOI any good

Electronics Forum | Tue Aug 29 05:58:28 EDT 2000 | Chris May

Andy, I have been "evaluating" some AOI systems. However, some of these are actually SAOI (Semi Automatic Optical Inspection), which is not a problem if that is what fits your process and budget. You can buy a high end system complete with many cam

Re: BS

Electronics Forum | Wed Aug 23 08:32:32 EDT 2000 | Earl Moon

Well Sun, This is Moon and you are out of phase with reality. I have nothing against advertising as long as it does not prohibit free technical intercourse as it did me and the investment I made several years ago. Free my ass. I mean, let them make

Re: Daughter Board Attachment??? Help!

Electronics Forum | Tue Aug 22 10:22:59 EDT 2000 | Wolfgang Busko

Mark: The fact that these daughter boards have to be attached to the TSOP-footprints is what makes the thing difficult cause they will be greater than the original part. One could think that a LCC-design allows for proper routing. But when it comes t

Re: The best way to erase flux from the golden fingers?

Electronics Forum | Mon Aug 21 20:17:08 EDT 2000 | Dave F

Hey Gyver: Oooow, using a pencil eraser has to take time. I would hate to be the person responding to your customer trying to explain the pencil eraser shreds accidentally left on the board. Awww, just spritz it with DI water and wipe it off with


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