Printed Circuit Board Assembly & PCB Design Forum
SMT electronics assembly manufacturing forum.
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we have solderability problem(some pins aren`t soldered) wit... - Aug 26, 2008 by omid
Hi Omid, Before tweaking the profile, it's a good idea to... - Aug 27, 2008 by Vlad
Hi, also you can check the board design. If always the sm... - Aug 27, 2008 by emil
nothing relates to ROHS components and tin lead process? ... - Aug 27, 2008 by omid
Soory, but I don't understand what you are saying/asking. Pa... - Aug 27, 2008 by Vlad
i mean that the parts that we have here is ROHS compliant(pb... - Aug 27, 2008 by omid
I've been there. Soldering no lead parts in a leaded world ... - Aug 28, 2008 by Real Chunks
Well, as I've said before, it's much better to figure out wh... - Aug 28, 2008 by Vlad
> I've been there. Soldering no lead parts in a > l... - Aug 28, 2008 by omid
how can i be sure that the device isn`t affected by moisture... - Aug 28, 2008 by omid
That is why you need to do analysis of the failed components... - Aug 28, 2008 by Vlad
Vlad, Where might one do this analysis??? ... - Aug 28, 2008 by garyr
We do it on a regular base. You can check out the website b... - Aug 28, 2008 by Vlad
So just send a board to your company and that's root cause a... - Aug 28, 2008 by Real Chunks
i read in smt soldering handbook that by placing the device ... - Aug 29, 2008 by omid
Omid, Try changing your profile. I had the exact same thi... - Aug 29, 2008 by Real Chunks
Omid It depends. Follow the guidelines of ANSI/J-STD-033, S... - Aug 29, 2008 by davef
Everyone has been playing a guess game so far :-) but we don... - Aug 29, 2008 by Vlad
we are doing many experiment on this problem 1)sn63 pb37 so... - Aug 30, 2008 by omid
All that they are telling is important (variants in the proc... - Aug 31, 2008 by Allan
we use another device with the same package but it doesn`t h... - Sep 01, 2008 by omid
I told a friend this problem, and he also thinks the problem... - Sep 01, 2008 by Allan
I would do just that (and eventually will), but I've been ju... - Sep 01, 2008 by Vlad
That could lead to oxidation of the leads and worsen soldera... - Sep 02, 2008 by Stephen
> That could lead to oxidation of the leads and > wo... - Sep 03, 2008 by omid
I've seen where a new person comes on with some strange prob... - Sep 03, 2008 by Stephen
Wow, what a bender. too many Miller Lites! Anyway, Vlad is... - Sep 03, 2008 by WaveMasterLarry
Omid, In some cases we have been able to restore accept... - Sep 03, 2008 by glennr
No, I don't work for Suntech (me company name is different b... - Sep 03, 2008 by Vlad
I happen to agree with Vlad and I'm not in the same business... - Sep 04, 2008 by ScottE
In the REAL world most people don't have time to send out pr... - Sep 04, 2008 by Real Chunks
You are right. That is what process engineers are for. HOWEV... - Sep 04, 2008 by Vlad
... - Sep 04, 2008 by WaveMasterLarry
This is fine from a quality engineers point of veiw, but as ... - Sep 04, 2008 by Real Chunks
Well, it depends on what kind of evidence you'd have. I dea... - Sep 04, 2008 by Vlad
Well, I've never "set it up" (wasn't sure whether it would b... - Sep 05, 2008 by Vlad
Hi Greg, It's an interesting scenario, but not even close... - Sep 07, 2008 by Vlad
Hey Greg, Do you still want to see the answer? :-) Vla... - Sep 09, 2008 by Vlad
yes please ... - Sep 09, 2008 by BLT Circuit Services Ltd
OK. Here it goes. It's a series images taken after cross-sec... - Sep 09, 2008 by Vlad
It's never been there and it wasn't supposed to be there, as... - Sep 10, 2008 by Vlad
Well, it wasn't as easy to figure out the root cause. The la... - Sep 10, 2008 by Vlad
Root cause analysis is simply looking for what caused a prob... - Sep 10, 2008 by Stephen
VERY TRUE, well said Cheers Greg ... - Sep 10, 2008 by BLT Circuit Services Ltd
No, we didn't do the test you mentioned, but did EDS on the ... - Sep 10, 2008 by Vlad
Why just a half, I'd be glad to send a whole one. Just let m... - Sep 10, 2008 by Vlad