Electronics Forum | Sat Jun 25 00:52:31 EDT 2005 | ktron
Hi all, Recently I had problem with printing the lead free solder paste, almost every board has bridging especially on the fine pitch locations. Anyway this problem never happens when we use leaded solder paste. So I would like to ask if there are a
Electronics Forum | Tue Jun 28 13:04:08 EDT 2005 | slthomas
Are you saying that increasing the frequency of cleaning to every 3 boards *reduced* bridging, or that it's just something you tried? I don't understand why that would help(in my experience it has reduced "insufficient solder" conditions but not brid
Electronics Forum | Tue Jun 28 09:39:00 EDT 2005 | davef
Points to consider are: * Gold plating too thick [SB LT 8 uinches]. [Obviously, we're talking about actual plating thickness, not the specification.] * Reflow recipe improper [SB 220*C 5-10 sec]. A recipe that works fine for HASL needs to be hotter
Electronics Forum | Wed Jun 29 06:57:20 EDT 2005 | mattkehoe
Hi Bob, We tried flowing the pads with a soldering iron. The pad at the tip of the iron went shiny but as soon as the iron was taken away, the pad returned to the dull finish. You could actually move the tip around the pad and it would shine up then
Electronics Forum | Sun Jul 10 12:42:15 EDT 2005 | IMRANH
HI I am IMRAN i am not expart for it but i tell you one thing you cheak your PCB in microscompe may bee posibal you can see veary thin lear on the pcb pad. its come from pcb monufacturer whan they pass form chmical solution its lear may bee com. pl
Electronics Forum | Tue Jun 28 11:31:23 EDT 2005 | kennyg
Anyone know of a maximum solder overprint formula? I need to overprint a 0.011" wide aperture but want to go out to 0.050" overprint. This seems extreme, but necessary as I can't go out in width due to numerous issues. It seems like one could come
Electronics Forum | Wed Jun 29 03:37:53 EDT 2005 | lupo
Hi, I think that the time depends on the type of stainless steel, temperature and solder alloy. For example, one of our machines is delivered with 316 stainless pot and alloy SnNi. It worked six months (120days*16hours = 1920hours) and aft
Electronics Forum | Wed Jun 29 09:01:46 EDT 2005 | jdengler
Many of the components will deteriorate at very different rates. This makes giving an hour rating difficult. If you read, http://www.speedlinetech.com/docs/EquipmentImpactsofLeadFreeWavesolderingAPEX2003BestUSPaper.pdf you will see they give inspe
Electronics Forum | Tue Jun 28 19:56:20 EDT 2005 | matjen
I am in the process of searching for anyone that does repair on fuji cp6 nozzles .7 & 1.0 mainly, We have an abundance of bent and broken nozzles that I would like to get repaired rather than throwing out so if anyone has information on this please
Electronics Forum | Wed Jun 29 03:23:10 EDT 2005 | dougs
We used to use a company in the uk that did this, we stopped as the results were never that good, i think the company stopped offering the service as well as no-one else wanted to have their nozzles repaired, it's best to get new nozzles in and make
