Electronics Forum | Wed Aug 22 21:42:54 EDT 2007 | davef
Questions are: * Do these pads take solder? How well? * Have you stripped the gold and evaluated the condition of the nickel?
Electronics Forum | Sun Aug 26 11:27:12 EDT 2007 | vangogh
Hi Davef, Thanks for the reply. There seem to be no issues on SMT reflow based on some samples done. We have not stripped the gold yet. We did a X-section+EDX and we are seeing traces of copper on the nickel layer. Any idea what is the implication of
Electronics Forum | Mon Aug 27 08:03:32 EDT 2007 | davef
Actually, you will be soldering and wire bonding to the palladium layer, so we should have asked if you checked that layer, rather than the nickel. We not sure of the source of the copper that your see on EDX. It's possible copper from the pad migra
Electronics Forum | Tue Aug 21 14:37:23 EDT 2007 | jseagle
We went with a DEK ELA automated printer and have never been happier. We print down to 16mil (.4mm) with great results. I know this may be beyond your budget but just look for a printer that raises straight off the board with no hinge. James
Electronics Forum | Fri Aug 31 12:16:27 EDT 2007 | electronhose
Glastic is cheaper than the custom composite materials normally used for pallets, but the few I have had fabbed started to degrade pretty quickly. Some pallet material is rated at 260 C continuous / 360 Max where the best Glastic I could find is rate
Electronics Forum | Tue Aug 28 14:42:38 EDT 2007 | dphilbrick
You could shoot the engineer that designed them in without having a way to manufacture them. You could also try laser soldering or selective soldering.
Electronics Forum | Tue Sep 04 13:33:55 EDT 2007 | floydf
We "bar" solder them too. (It's really pulsed resistance welding). It's slow but reliable. They seem to be designed for this process. By the way, Luxeon just came out with new LEDs that have nearly the same luminous flux, but that can withstand leadf
Electronics Forum | Mon Aug 27 07:57:38 EDT 2007 | davef
Most suppliers provide guidance on proper assembly technique, like: http://global.kyocera.com/prdct/electro/pdf/add_pdf/111_119_e.pdf We have no relationship, nor receive benefit from the company referenced above.
Electronics Forum | Mon Aug 27 14:23:45 EDT 2007 | scooter
I must be missing something? If you strip 1/8" off both ends of a 1/4" long wire you would have nothing left? Anyway I would use buss wire and if needed slide a bit of tubing over it bill
Electronics Forum | Mon Sep 03 06:17:19 EDT 2007 | mun4o
hi, This is moisture problem, I think.I have similar problem.You must try to bake PCBs.I bake our PCBs in solder wave mashine , under solder pot.There T is about 80*C - after 6-8h the PCB is dry regards
