Electronics Forum | Thu Aug 16 12:24:28 EDT 2007 | slthomas
We are using Cad2Cad to convert cad data to Philips VIOS text. The properties tab references a Package Dimensions file that can be used but I have no idea how that is generated or how it's formatted. It seems it would be worthwhile to generate one ma
Electronics Forum | Thu Feb 21 04:41:37 EST 2008 | mun4o
hi,Toni, we use only FR4.Some of PCB we order in China and Taiwan.With these PCBs we can't any problem.Other PCB we order here in Bulgaria.The problems with voids start last year - we have voids only in PCBs from Bulgarian factory.The process is sam
Electronics Forum | Tue Aug 21 12:54:45 EDT 2007 | cedams
A long time a go I designed Wave Solder Pallets for lead based solders, but having been out of that industry for a number of years I need to design some new pallets for lead free. We used Titanium to support and mask areas of the board and that work
Electronics Forum | Fri Aug 24 14:15:24 EDT 2007 | clarkk
Ben, I'm not aware of any 'automatic' method to convert PTH footprints to SMT. Typically, many of the components are passives, and there may be a way in your CAD software to change the passives of a common size to a different footprint. That will co
Electronics Forum | Tue Sep 04 03:10:35 EDT 2007 | chrispy1963
We've got 2 lead free lines running at present and one leaded. Our lead free pallets and stencils were both leaded before changing over. Just take care to remove any built up flux from the pallets as well as hidden leaded solder deposits prior to r
Electronics Forum | Fri Sep 07 09:13:21 EDT 2007 | smtirl
Folks, we've recently upgraded to Heller MKIII reflow ovens with Gen 9 cooling units. We're running N2 atmosphere at 1000ppm O2 and Kester256 solder paste. We're seeing a big problem with flux residues building up in the cooling section of the
Electronics Forum | Wed Sep 12 17:09:11 EDT 2007 | allwave
HI John, I use wave fixtures with titanium inserts. So far I have not seen any problem with walls about 0.010" thickness and 0.120" tall (or deep depending how you see it)...The Titanium-composite interface is also very strong (as long as you have e
Electronics Forum | Tue Sep 11 22:40:26 EDT 2007 | philip_yam
We are testing SAC paste for thru-hole components in the 2nd reflow process. The solder joint is alright but some problem encountered in FR1 or CAM2 PCB after multiple times of reflow due to the temperature. We are very interested in Zn or Bi-based l
Electronics Forum | Wed Sep 12 20:46:16 EDT 2007 | Mag10
We've configured SMT and Wave lines such that each line can run either No-Clean and Water soluble process. As we are doing cleanliness study, an observation is there may be cross contamination when we share the Rework benches or PCB trays between No-
Electronics Forum | Wed Sep 12 22:57:02 EDT 2007 | lito_visaya
Anyone, We are an electronic assembly contractor and one of our customer requires a 100% solder coverage on pads for their products. We are using flex pcb and we mount only one component (LED for backlight application). The solder paste we are u
