Electronics Forum | Fri Jun 30 20:39:52 EDT 2006 | johnwnz
Grant, Haven't doen any work with the SN100C paste, the problem I guess is yoru subject to the suppliers flux base so if that is poor then the alloy may not perform as well as it could. We've found Avantec to be pretty good at SMT but have got SN100C
Electronics Forum | Tue Jun 13 13:40:20 EDT 2006 | Bob R.
Wow, good luck. None of my test results would be helpful since we use IPC-B-24 test boards as received from our board suppliers so we have a clear understanding of what we're shipping customers, not necessarily paste performance alone. We'll only cl
Electronics Forum | Fri Jun 09 05:18:07 EDT 2006 | Rob
Hi Shawn, that you're baking the components makes me think that they are either old, or have been sitting around for a while (or none of the above & you are really dilligent!) Whilst baking will sort out the MSD issues (such as popcorning) it will
Electronics Forum | Tue Jun 13 17:16:44 EDT 2006 | slthomas
"I believe I was the one who stated in an old post that prying the leads is rediculous." I have been down this road as well. The prez of my previous employer decided that because he could pry .012" leads off the pads with a screwdriver that we had a
Electronics Forum | Fri Jun 09 11:18:25 EDT 2006 | kehoem@bellsouth.net
Question; Do you think it's possible that your customer has got his units mixed up & actually means 0.3 micro inches of gold over 0.5 micro inches of Nickel? That is what I said but their vendor says they are building to print which says 80 uM and i
Electronics Forum | Fri Jun 09 12:51:52 EDT 2006 | flipit
You can not solder to 30 micro inches of gold over nickel and certainly not 80 microns. You can not with tin lead solder or SAC305 anyway. The upper limit is between 6 and 10 micro inches of gold. This is what ENIG plates to. If you solder to gre
Electronics Forum | Fri Jun 09 12:35:00 EDT 2006 | G. eisner
We are finding this diode not reflowing well. We are having tombstoning issues with this part and only this part on different pcbs. The main thing we find is that under a scope there is blow outs as in air bubbles that look like they have exploded. I
Electronics Forum | Mon Jun 12 09:07:10 EDT 2006 | JimC
Flux: Getting enough- is the spray fluxer getting good through-hole penetration. Try cranking it up. Soltec spray fluxers are not really as good as Ultrasonic Systems or Sonotek ultrasonics or the new ServoJET, but should do the job. Also, try anothe
Electronics Forum | Mon Jun 12 09:08:17 EDT 2006 | Chunks
Hi Grant, Boy, how do I say this - I might have to agree with Wave Master Larry. (Yeah, yeah - I know; Davef and Dr. Shocker will "burn me" again) "We" also solder large thru-hole connectors on with a selective solder machine. They measure 4 by 8
Electronics Forum | Mon Jun 12 13:49:47 EDT 2006 | grantp
Hi, Thanks guys for all the suggestions. I am going to check what options we have for top side heating. Do people recommend we get convection for that? Also, we seem limited to 60% in the machine setup, and does anyone know how to run the top lam
