Electronics Forum | Fri Aug 29 14:57:24 EDT 2008 | wavemasterlarry
What, Listen. Everyone know wave solders catch fire from time to time. I've only been a part of these fires a coupel times. Less than the number of fingers on my hands, so I don't think it's any different then anyone elses. Plus I havn't pulled o
Electronics Forum | Wed Sep 03 19:54:23 EDT 2008 | vladig
Well, I'm not a sale person whatsoever. I'm a purely technical guy (even PhD :-)) who has been with the industry for quite a few years and I know very well what intermetallics means and how thck it should be for different board finishes and solders
Electronics Forum | Fri Sep 05 13:33:28 EDT 2008 | jmiller
We are having problems with relay package seals cracking and moisture intrusion in power relays on thru-hole assemblies. we use a few different brands of thru-hole relays, we are using a sn-pb process right now and just going to lead-free. the contra
Electronics Forum | Wed Sep 10 15:37:31 EDT 2008 | scottp
At the risk of painting with too broad a brush: QEs are like seagulls: fly in, make lots of noise, crap all over things, then fly away. Back to the knob turning vs. analysis debate. Part of it may be different industries. We're in the high reliab
Electronics Forum | Thu Sep 11 14:47:40 EDT 2008 | rarnold
For Production purposes, the problem goes away when a new solder paste lot is used. As I reported in my first message though, the problem keeps coming back. Most likely, paste lot is not the Root Cause (3 different lots now in the last 6mo). I rea
Electronics Forum | Thu Sep 11 04:59:24 EDT 2008 | mun4o
10x , davef, about LEDs - the problem is , that about 1% of all leds wich we soldering have some defect - not blinking, when I make functional test.I chek 300 leds before solderinig - all is ok.After reflow 1 led not blinking, after SW 3 leds not bli
Electronics Forum | Tue Sep 16 16:03:43 EDT 2008 | vladig
Well, typical content of Pb in Sn/Pb polating is a few percent (just to mitigate Sn whiskers growth). Therefore, the lead finished with SAC305 won't be much different from those finished with Sn/Pb. You can make one or two cross-sections for sanity c
Electronics Forum | Mon Sep 22 17:27:34 EDT 2008 | jlawson
What is BS ? I am not trying to sell - up to each person to take look...just highlighting as possible solution. I just wanted to highlight should take a look at vPlan as possible solution - of course many ways to skin a cat. I have worked in CAD-CAM
Electronics Forum | Mon Oct 06 15:04:25 EDT 2008 | hussman
Brick (if that is your real name), Placement machines use centroid data to place parts. Generally this is derived from the "copper" that is etched on the board. Thus why we use the fiducials for alaignment. During board manufacturing, holes are d
Electronics Forum | Fri Oct 24 13:21:12 EDT 2008 | evtimov
Hello Bong, I would make one test only. Make one batch using the problem part from a different vendor. That will answer your main question. For me the part is causing all your problems. If it is possible, change it. Last time having problem like you
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