Electronics Forum | Thu Jun 26 09:50:05 EDT 2003 | James
To Brian W. I think I will use your concept thanks for the help and from all the others that gave me suggestions. I seem to get best results from a Low temp at first with hardly no soak and just a ramp to spike. Thanks again.
Electronics Forum | Wed Jul 16 10:55:08 EDT 2003 | stepheno
You might want to check your input power. It is never "clean" but you might have too many spikes and transients. I've seen line monitors used and it was an eye opener how much noise there was on the input power. If you had a CPU go, you might want
Electronics Forum | Tue May 31 21:39:46 EDT 2005 | davef
We not sure what your supplier means either. So, maybe it's worth a follow-up call. One possibility is: The HASL could be lead-free as easily as it could be SnPb. You probably need to think about how you're going to change your reflow recipe to in
Electronics Forum | Wed Jul 06 13:22:25 EDT 2005 | Dreamsniper
Can anyone help me on where to find reference for the above info other than IPC2221 as it is not covered by the said standard. I am looking for a proper trace spacing for my lightning protection circuit on my PCB for the following requirements: 750
Electronics Forum | Wed Jul 06 13:22:48 EDT 2005 | Dreamsniper
Can anyone help me on where to find reference for the above info other than IPC2221 as it is not covered by the said standard. I am looking for a proper trace spacing for my lightning protection circuit on my PCB for the following requirements: 750
Electronics Forum | Wed Mar 15 21:34:07 EST 2006 | Chunks In Cebu
I can see why he left. Not knowing your board or paste, but I would tend to say your profile is on the cool side. Unless your boards are very small and your conveyor speed is slow, I'd say this is no good. It looks like you're using the old "ramp,
Electronics Forum | Fri May 26 09:52:46 EDT 2006 | samir
Dave, For lead free, I've always left the ramp part the same and just spike higher in the reflow zone. I've also slowed things down a bit (5" per sec. slower)....without using prediction software, try, say... Z4 200 & Z5 260.
Electronics Forum | Fri Jul 28 09:12:59 EDT 2006 | pavel_murtishev
Good afternoon, Profile is standard ramp-soak-spike (According to paste manufacturer requirements), paste is Almit V16L HM1-RMA, type 3, Sn62Ag2. Look here for details: http://www.yousendit.com/transfer.php?action=download&ufid=98684D1201B0F001
Electronics Forum | Wed Feb 14 08:15:08 EST 2007 | CK the Flip
I agree with Rob that voids are often times paste-dependent, and it's all about the type of flux that's used. The cause of the voids, as you all know, is outgassing of flux which has nowhere to go with BGA's. Some paste mfgrs. will recommend going
Electronics Forum | Mon Apr 30 07:38:13 EDT 2007 | realchunks
If this takes off, can we expect to see posts like this: "My reflowed boards are fine, but my Pop-Tarts and bagels are coming out slightly burnt. I think my spike is too hot but my boss is blaming the lead-free cream cheese! Can someone help?"
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