Electronics Forum | Wed Jan 04 12:48:34 EST 2006 | pjc
In-Circuit Test is the best method for ensuring solder joint connections. It is a much more reliable than AOI. An ICT machine can ensure solder connections are made for array package devices such as BGA, PGA, etc... AOI is best for component I.D.- is
Electronics Forum | Fri Jan 06 10:49:03 EST 2006 | PWH
We had a bad situation with solvent wipe. One of the solvent supply lines cracked and the solvent got on a cluster of air lines. The air line material reacted poorly and we blew what seemed like one airline per day for a couple weeks. I had to cut
Electronics Forum | Thu Jan 05 20:34:32 EST 2006 | davef
We agree. It sounds like your tester is possessed. If it starts vomiting pea soup, throw it away. Otherwise: * Follow Pete's suggestion by calling Alphametals [or whatever they call themselves nowadays] * Contact analytical laboratories and ask th
Electronics Forum | Wed Jan 11 10:29:34 EST 2006 | chunks
Wow, you got off easy. He made a smock suggestion for ESD and next thing ya know we all had these stupid things that didn't fit right, get in the way and became a major pain in the arse (not to mention the people that never wash them. Stains are no
Electronics Forum | Thu Feb 02 09:06:53 EST 2006 | drewake
Sorry, I am jumping into this late - I'm a new user. Our company is looking to perform an evaluation for a new paste. We are looking at a 63/37 no clean - type 3 or 4. Our technology is currently at 0201s, .4mm pitch ICs & .5mm uBGAs. I have
Electronics Forum | Thu Jan 12 11:25:06 EST 2006 | Cmiller
We tested SAC305 in our selective solder machine and found the dross production made it an unnaceptable choice of alloy. Personaly, I cant imagine dross in a joint being a good thing but if it is a very small amount and does not occur very often, y
Electronics Forum | Thu Jan 12 13:21:11 EST 2006 | barryg
Opinions. I have a large finned heatsink that we place over a D2pak transistor. This heatsink is designed to heatsink the transistor through the junction of the pad area that the transistor is attached to. The paste pattern we chose was small dots ar
Electronics Forum | Wed Jan 25 03:29:04 EST 2006 | Neil
I agree Rob, The main thing is that you don't beleive everything without question. If you're sure the supplier knows what he's doing and you have a good relationship with him then a declaration should be OK. When doubt arises it is worth getting sam
Electronics Forum | Fri Jun 02 16:22:53 EDT 2006 | Randy
Do not believe every thing your suppliers tell you, even a written cert does not guaranty compliance. We recently purchased a Niton XRF analyzer. The first day in use we found component�s that were made for us "RoHS" that were far from compliant. Peo
Electronics Forum | Thu Jan 19 06:25:42 EST 2006 | bwet
There are several life studies (see for example http://www.solder.net/stencilquik/articles.asp) which point to higher reliability of reworked BGAs using solder paste vs flux. The theory on the mechanisms which allow this to happen are as follows: 1
