Electronics Forum | Fri Apr 18 07:50:10 EDT 2008 | scottp
I'm curious if anyone has figured out a clever way to errorproof this. We're exempt from RoHS so we have mostly SnPb products but some Pb free ones at customer request. Of course, we have methods to control moisture sensitive parts, but I worry tha
Electronics Forum | Fri Apr 18 09:16:59 EDT 2008 | samir
Yes, BLAME. It's a common theme in manufacturing unfortunately. Also, unfortunate, is that the PROCESS is the easiest thing to blame and often the path of least resistance to the non-technical manufacturing personnel (operations managers and line s
Electronics Forum | Mon Apr 21 11:55:29 EDT 2008 | realchunks
"Disturbed" usually means some form of movement. I would think your leads are moving due to warp as the board exits the reflow zone. Not knowing your profile, I would suggest checking your profile. Make sure you have adequate "above liquidous" and
Electronics Forum | Wed Apr 23 15:23:16 EDT 2008 | cassedra
I am looking for users of YesTECH AOI that would be interested in comparing notes on what minor problems you have had and how you may have figured out what you could do that didn't require YesTECH support? Or little tricks that help you make the mac
Electronics Forum | Mon Apr 28 19:50:09 EDT 2008 | boardhouse
My guess is that either the board house did not cool the boards down properly coming out of the lamination oven. Typically after they come out of the heat chambers they go into a cool down chamber for x amount of time, if they cool to fast or are pu
Electronics Forum | Tue Apr 29 07:38:42 EDT 2008 | davef
Warpage typically (not always) kinda, sorta points to a fabrication bake induced issue that is the racking technique & may be relieved by "flat baking" under weight. Your baking at 125* won't do dip. You need to get the laminate temperature above it'
Electronics Forum | Thu May 01 18:14:19 EDT 2008 | jmelson
Yup, this is pretty scary, all right. I have just used up the last FPGAs of a batch we bought from a Chinese source. Never again! Some of them worked, some didn't, in a variety of nefarious ways. People cautined me about empty packages, etc. Wel
Electronics Forum | Thu May 01 23:46:55 EDT 2008 | lellis
Revealing trade secrets to achieve what a company can do to make money is a "touchy" situation. Especially on a forum where people are asking for help. Our company has the capability to remove your markings, and reapply them in several techniques.
Electronics Forum | Tue Apr 29 11:21:14 EDT 2008 | patrickbruneel
Verizon Supports Telcordia's Position on the RoHS Directive. New legislation known as "RoHS" (Reduction of Hazardous Substances) bans certain chemicals and metals from some electronic manufacturing. In order to maintain high and predictable network
Electronics Forum | Thu May 01 12:46:19 EDT 2008 | dphilbrick
Thanks for the link Samir. Although this thread does have some good info in it I don't think it is hitting the exact point I am trying to resolve. This seems to talk to a one profile fits all for running lead and lead free paste. I want to know about
