Electronics Forum: show (Page 151 of 232)

Gold Pads Soldering problem

Electronics Forum | Thu Dec 15 02:09:22 EST 2005 | tk380514

SNAGGLETOOTH HOLDS HIS HANDS UP, HAVING JUST REACHED THE EDGE OF HIS OWN IGNORNACE. I just read up on black pads - http://www.emsnow.com/npps/story.cfm?ID=9784 when i checked the joints under the microscope they were a light grey slightly discolou

Conformal Coat (Urethane) & bubbles

Electronics Forum | Tue Jan 24 19:00:15 EST 2006 | MikeF

Graham Naisbitt is definitely an expert on conformal coating, he has posted answers here for years. Check your material to see what the cure mechanism is. Most urethanes need moisture from the air to cure, the higher the relative humidity the faste

Lead free tin copper only

Electronics Forum | Sun Feb 05 09:29:12 EST 2006 | Cmiller

Look at: http://thor.inemi.org/webdownload/newsroom/Presentations/09.pdf Page 47 shows both alloys to be similar in reliability although its a little troublesome that the particular defects are not isolated as I feel there is a big difference betwee

Fuji NXT

Electronics Forum | Thu Feb 02 20:48:07 EST 2006 | ____

I would like to start a new post regarding fuji > NXT machine. What do you think about the machine > as far as the servicing of the machine goes. I am > so used to the older machines such as : CP,IP, > and QP. Those machines at least give you som

ESD Flooring

Electronics Forum | Thu Feb 23 09:19:38 EST 2006 | Bruce

for years we have all delt with the choices of endless products to use as flooring to create an ESD safe area for electronics assembly, I have spoke with "ESD TECH's" in the past that have told me a "clean / Bare concreate floor" provides as much di

Necessity of ROSE in commercial quality processes

Electronics Forum | Tue Feb 28 14:32:26 EST 2006 | masrimhd

As I know, the encapsulation effect occurs only with rosin based fluxes. So if you have a PBA soldered using RA Flux, you should either wash it well, or leave it alone and it will be safe. For NC process the story is different because there�s no re

Tin Lead BGAs in leadfree paste

Electronics Forum | Tue Mar 07 10:46:24 EST 2006 | muse95

I have to disagree with you, BillyD. If Craig searches the forum, he will see that the concept of a Pbfree BGA with SnPb paste has been debated many times. You say it is fine. I say it is NOT. There have been several studies done that clearly sho

Tombstones? Pb vs Pb Free

Electronics Forum | Wed May 10 00:27:46 EDT 2006 | Chris

Russ, By a longer profile you mean a more even slope across the entire profile. Unfortunately I only have a 5 zone oven that is fairly short. How many heated zones are you using? Did you shrink the 0402 pad design and leave less pad exposed out a

Capacitor Shorts after Depaneling

Electronics Forum | Wed May 10 12:13:16 EDT 2006 | scombs

We have a 6 up panel with a 1206 part .082" from the board scoreline. After depanelization when we run the board through ICT it fails for a short at that location. We have visually inspected at high magnification for any cracks in the body and at the

Farewell to All!

Electronics Forum | Thu May 18 12:10:16 EDT 2006 | muse95

The whole point of any forum is to share practical tips and tricks and learn from others in similar positions. If the only thing you're going to say in your posts is "hire a consultant to achieve synergy" you aren't really contributing, it just sound


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