Electronics Forum | Tue Apr 29 09:43:30 EDT 2003 | davef
With a nickel barrier and 'tin' plating, reconsider your reflow recipe to reduce the leaching of the termination into the solder during reflow. Points are: * In designing a reflow temperature recipe, it is important that the temperature be raised at
Electronics Forum | Fri Jul 04 21:09:04 EDT 2003 | ramanandkini
I have a CEM-1 PCB board with 35 microns copper. This is PCB is finished with SMOBC+HALS. We do solder SMT LEDs, but till date we do not have problems that you have listed. The LEDs are good & bright. It even passed high & low temp cycle tests (-40 t
Electronics Forum | Mon Sep 22 23:27:09 EDT 2003 | severs
By "hacking" do you mean altering the performance of the board or something else? This reminds me of something I saw a while back. Better termed counterfeiting than hacking, it may have some relevance to what your friend is trying to do. The probl
Electronics Forum | Wed May 19 07:38:42 EDT 2004 | Bob L.
I'm trying to help one of our remote sites solve a problem with a warped PBGA. The corners are lifted, creating columnar joints and the central balls are sometimes shorting. I've verified that it's not popcorning and I've got samples going to the l
Electronics Forum | Wed Aug 18 09:20:22 EDT 2004 | QE
Davef, Sorry for the late response. I was trying to gather more info. The group with low ionic contamination levels came from one of our other facilities. We want to outsource more of our product due to increasing demand. Both groups use the same
Electronics Forum | Thu Nov 11 09:49:20 EST 2004 | cyber_wolf
In the last 6 months or so we all of a sudden started having a placing problem on PLCC28 components. We are stumped, and Fuji is stumped. Has anyone ever seen this before ? (This is on a CP43) Here is what we have tried and verified: �� Nozzle def
Electronics Forum | Fri Mar 11 18:47:54 EST 2005 | davef
JD: It's important to note that FR-4 does not contain PBB or PBDE. The bromine in FR-4 epoxy comes in the form of tetra-bromo-bisphenol A [TBBA], which polymerizes and become part of the cross-linked epoxy. Bromine, in the form of hydrogen bromide, i
Electronics Forum | Tue May 31 11:56:12 EDT 2005 | chunks
Hi Matt, Get definitive answers! Contamination on the HASL finish?: From the pix you posted, it looks like something fishy is going on. I�d reject them back to the board house and demand an answer. Most board houses and purchasing people will g
Electronics Forum | Mon Jun 27 10:25:29 EDT 2005 | Paul
Hi Erik, looks like there's not much appetite for this debate on this forum. Possibly because not many use them and aren't in a position to confirm or deny what we know. We use our pumps 6 days a week, 24hrs a day so it's a very dynamic proc
Electronics Forum | Fri Sep 02 07:38:13 EDT 2005 | DannyJ
Hi Mike, I haven't tried the 0201s with a Hyrda, but after seeing 20 reviews of your message without a response, I'll try and share my experience with 0402s on a non-Hydra machine. The 0402s are slow, but I managed to get some speed by maxing out
