We have used gold plated edge connectors w/ribbon cable occasionally, but make 
sure that the fingers you are "contacting" are also gold plated!!!  (Au/Solder 
are in "incompatible galvanic couple" and corrosion currents will mess up your 
SIR results.  Solder oxidizes too much (especially with the VERY low currents 
measured in SIR).

Also, make sure you orient the connectors in the chamber so they don't fill 
w/water (to the side is best, wires overhead "drip" on samples; connector on 
bottom fills up like a swimming pool).

For a good general discussion, see IPC-9201, available from IPC @ 708-677-2850.

Good luck.

Jim Maguire
Boeing 
206-657-9063

______________________________ Reply Separator _________________________________
Subject: Connecting wires to PCB's
Author:  [log in to unmask] at esdigate
Date:    3/6/96 2:39 PM


IPC,
     
I am an intern for INTeL Corporation and I am currently working on a 
project that involves the measurements of the Surface Insulation 
Resistance(SIR) of PCB's.  The project has been broadened recently and I 
have come to the conclusion that the current methods are taking too long 
and are too sloppy.  
     
So here is the deal.  
The SIROMETER has 22 gauge wires which are connected to the pcb's.  The 
coupons we are currently using are B24(I don't know where INTeL got 
them, but my supervisor suggested to contact IPC.ORG on the web to look 
for help).  Well, soldering the wires to the edge connectors of the 
PCB's just isn't cutting it.  It is a painstakingly long process and 
resoldering is very messy and will impede with the integrity of our 
results.  
     
The question - Do you know of any type of connectors or adapters or 
small jumper cable type things that would make this connection simpler?
     
I am probably going to drop by Homebase tomorrow to see if they got 
anything that would work.  Just wanted your opinion.  
     
Thanks for your time!
Matthew Holden
Intern at INTeL Corporation
(602) 554-3247