Electronics Forum | Wed Jul 15 10:25:26 EDT 2015 | shahrat
Hi brothers, Can anyone give me some clear ideas that which surface finishing is the best for PCBs used for LED TV motherboard production? Some says that OSP is good but it is not good for double sided board. So I am a bit confused in between HASL,O
Electronics Forum | Fri Apr 14 10:16:27 EDT 2000 | PeterB
Dave, 'Free Issue' here in the UK means material (be it PCB's or anything else) supplied by our customer from their stock and not charged to us. That is why we sometimes cannot control the design parameters. Many thanks for the suggestions. We alre
Electronics Forum | Tue May 07 07:38:13 EDT 2002 | ianchan
Hi mate, checked with one of our egg-brains in the factory (freakin' workaholic still around at this time of night), he tells me that Ag-based PCB finishings share rather similar reflow temperatures for normal Sn/Pb applications. this means (if he i
Electronics Forum | Mon Dec 18 16:43:22 EST 2006 | darby
Boomerang, You said you are new to this so, First question. Are the components placed correctly with no offset pre-reflow? If the answer is yes then it's happening in the oven. Most likely cause is pcb design. If the answer is no then you have a pla
Electronics Forum | Wed Apr 16 19:23:52 EDT 2008 | molos21
I think you are close to the problem when you expect the pcb having a problem. When I look at your different pics I saw that your via holes looks like this pcb has a hasl finish... and when i look at Q 14 this picture tells me that the pcb is not an
Electronics Forum | Thu Jun 29 07:48:59 EDT 2000 | Mark
Welcome Bob, HASL stands for "Hot Air Solder Level" and is the final finish the raw boards guys place on the solder pads on the PCB. There are two popular raw board finishes, HASL which is a solder finish and NiAu which is Nickle Gold, and is a Gol
Electronics Forum | Mon Dec 31 05:07:59 EST 2001 | ronih
Hello, I need some information, even some initial information about Immersion Tin finish on PCB: solderability, environment sensitivity... Is this technology approved yet by anybody? Thanks Roni ORBOTECH
Electronics Forum | Thu Dec 08 08:18:29 EST 2005 | grantp
Hi, We have recently moved to flash gold as well, as we had solderability issues with emerson gold, and this was supposed to be a solution. However I did not know flash gold would be thicker, and could have other issues. Is flash gold a stable boar
Electronics Forum | Fri Feb 04 16:07:38 EST 2011 | pjc
If your peak temps in profiling the Sn/Pb solderpaste are 210C-215C, then no, you will not "weld" to the SN100C finish. SN100C is liquidus at 227C, too hot for most Sn/Pb solderpastes.
Electronics Forum | Fri Jul 23 10:08:31 EDT 2004 | B. Hunter
We received bare PCB's that were supposed to have been finished with immersion silver because of BGA locations. The boards were finished in ENIG. We are concerned over any reliabilty problems that might occur as a result of using ENIG at BGA locati
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