Electronics Forum | Wed Jul 31 17:35:16 EDT 2002 | davef
* Finally, when soldered by hand, do the problem pads take solder? Yes, the XRF analysis will be interesting.
Electronics Forum | Thu Oct 01 13:31:09 EDT 1998 | FRANK
Assuming that you do not have a solderability problem with the board or part it sounds like you are not pumping the solder up high enough to contact the board plus push into the board by about 1.8mm. Are you using a chip wave in front of the normal
Electronics Forum | Tue Nov 02 11:16:45 EST 1999 | Dave F
Pat: No, but if you describe the situation we may be able to sort through your soldering problem. Good luck. Dave F
Electronics Forum | Fri Jun 18 15:56:33 EDT 1999 | C.K.
Has there anyone bold enough to try this in their shops? My cubemate just got through telling me that at his last shop, they had bare copper boards (no HASL, no OSP, no nothing), with minimal solderability problems.
Electronics Forum | Mon Apr 29 10:07:00 EDT 2002 | geoff_goring
I need to find out about tin/lead diffusion and how this causes solderability problems in device lead-outs. This is not to be confused with an earlier thread of Zn/Pb diffusion - unfortunately this is was a typo.
Electronics Forum | Thu Jun 02 19:24:31 EDT 2005 | davef
Your link doesn't download. "1071" is not a valid part number on Keystone's site. "Battery clip" is not a valid part name on Keystone's site.
Electronics Forum | Fri Jun 03 03:27:36 EDT 2005 | Rob
http://www.keyelco.com/pdfs/prod03-coinholders.pdf Bottom of page 2 of 3. There is a reasonably large heatsink function on one of the pins due to the size of the Anode/battery spring clip.
Electronics Forum | Fri Jun 03 12:43:19 EDT 2005 | ratsalad
Rob, The first thing I checked was the profile, just for that reason. We've profiled the board with thermocouples on both sides of the battery clip and the profile looks good.
Electronics Forum | Thu Dec 08 08:29:25 EST 2005 | davef
Grant The solution to soldering problems with immersion gold boards is: find a supplier that can control his/her process. Electroplated gold over nickel is a very reasonable process. Billions of wire bound boards use it evry year.
Electronics Forum | Thu Sep 21 17:39:32 EDT 2006 | Cmiller
We have used it and it seems to be fine. I think we have probably run a few thousand boards with it across maybe 6 different assemblies.
