Electronics Forum: dave (Page 291 of 327)

UltraSonic cleaning machine

Electronics Forum | Wed Sep 25 15:58:36 EDT 2002 | bschreiber

Hello Dave, I hope that electronic slap didn�t hurt too much. Robf, I am sorry that you did not agree with my initial response, but the answer is very detailed and most of the support material I have is only in paper format so I need to either snai

BGA void removal

Electronics Forum | Sun Oct 20 12:49:11 EDT 2002 | johnw

Dave, I've had a few intersting conversations with Dr Lee, now there's a guy who know's stuff, but as it turn's out even he doesn't have all the answers on why things void. Many of his papers point towards oxides or contamination on the ball, so age

Rep Responses in Forum, Possible Guidelines

Electronics Forum | Sun Oct 13 22:46:37 EDT 2002 | caldon

OK another nugget- Those not wanting to hear anything from a Rep do not read on.--------------------------------------- Lets not forget what has has made this forum successful (those who have not read or have forgotten): Who are we? SMTnet.com is

Rep Responses in Forum, Possible Guidelines

Electronics Forum | Mon Oct 14 13:31:03 EDT 2002 | seand

Hello all, Dave, this is just another example of how your attitude towards others in the forum, outweighs your open mindedness toward their right to participate....It's SMTnet....not DAVENET. I'm not surprised to see you try to quantify the validit

stencil ordering

Electronics Forum | Fri Oct 25 18:03:46 EDT 2002 | soupatech

Russ, that makes sense, thanks. As for the 20x20... I was speaking with a sales rep who was trying to talk me into buying stencils from him. I told him I use "Fuji 4000" and he sent me quotes for 20x20 and 29x29. That seems odd since the Fuji 4000 st

pcb board deflection when mounting component

Electronics Forum | Wed Oct 30 01:23:22 EST 2002 | jasper

It has been my experience that when all > conditions are as they are supposed to be there > should be zero or very little deflection. When > you start placing components with pick and place > equipment that does not have a Z pressure sense, > yo

Making a BGA stand up

Electronics Forum | Thu Jan 16 03:43:42 EST 2003 | johnw

1st off for the forum folk, I don't like the fact that the new system only let's you see the posting your replying too, I'd rather be able to see the thread..... Anyhoo, why this alloy?, it's because it's the device manufacturers preferred and the c

White residue after cleaning with IPA

Electronics Forum | Mon Jan 27 12:02:00 EST 2003 | Mike Konrad

Dave is correct. No-clean flux + water = white residue (unless the proper chemical is mixed with the water). Additionally, no-clean flux + IPA = white residue. Many saponifiers work well as do other cleaning agents. White residue may also be a re

Plating for aluminum wire bonding

Electronics Forum | Sat Mar 15 20:24:13 EST 2003 | ramanandkini

Thanks Mr.Dave. Sorry for the delay. One of our major prolems in ENIG plated surface is that wire does not stick. For many years we were getting a bond strength of 14 grams in both ENIG and electroplated surfaces. Now one vendor supplies ENIG boards

AOI, Quality and SPC

Electronics Forum | Tue Mar 04 17:27:07 EST 2003 | msivigny

Hello Dave, I can understand why you might not use the auto-correct function based on the time it takes to perform the operation. I question why there is an auto-correct function in the first place? If I understand the way this works correctly, the m


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