Electronics Forum | Wed Sep 18 22:53:24 EDT 2002 | davef
Please give us background on your situation, so that we can focus on the specifics, for instance: * This is a bare board problem, correct? Then, this contamination causes what the problems in your process? * What is the type [ie, FR4, CEM1, etc] of
Electronics Forum | Fri Dec 08 14:35:28 EST 2006 | glynnhamer
We currently are building a pcb that has gold fingers, about 36 in a concave V overall shape from .275 on the outside edge fingers tapering down to .197 in the middle of the 2 inch span that plugs into a shelf connector. These fingers are on both sid
Electronics Forum | Sat Dec 09 08:32:25 EST 2006 | davef
Thoughts are: * Most board fabs have routers that can do this work. Can yours rework these boards? * Scrap the boards and start anew. Someone made a mistake. Cut your losses. * As a wild and crazy guy alternative, buy a router with a 45* bit from
Electronics Forum | Fri May 28 13:03:14 EDT 2021 | cbart
I'm honestly not sure IPC addresses this? the one thing i would ask myself if it were my issue: is the effected area in the critical contact area of the finger/contact? in other words if its low on the finger where the bevel was applied i bet its not
Electronics Forum | Thu Jan 20 10:47:57 EST 2000 | Chad Notebaert
There are several ways to do this, if you are doing large volumes the best way is to use Titanium Finger Masks. You can have them custum made or if you are lucky one of the standard sizes will fit. They slide over the fingers to protect them through
Electronics Forum | Thu Jan 20 12:10:29 EST 2000 | Dave F
Hany: I have never understood why the add-on boards in PCs have gold plating on their connectors. In the military and in avionics, they require gold on connectors to protect from wear and corrosion. But PCs ave very different. PCs: * Are obsolet
Electronics Forum | Thu Jan 13 12:07:24 EST 2000 | Tony Nirchi
Gold finger connector over a wave solder, what would be the best way to protect the fingers from solder.This is a high volume job.
Electronics Forum | Fri Jan 14 09:36:49 EST 2000 | Richard
If the gold fingers are pad types which plug into expansion slot connectors, I have used a titanium guard attached to the wave conveyor over the solder pot, which allows the PCB to connect to the fingers but masks the solder from the gold pads along
Electronics Forum | Tue Nov 30 17:32:37 EST 2004 | russ
If you are lucky, you might be able to chip the solder off the fingers with an Exacto knife and then polish it up with a pink eraser. This does work if the solder on the fingers isn't wetted very well. Russ
Electronics Forum | Sat Jan 23 12:37:35 EST 1999 | parag palshikar
hi, i am working towards developing a no-clean process for a customer at contract manufacturing facility. the assemblies have gold fingers on them. these are masked to prevent from any damage to them during reflow soldering. the earlier process ut
