Re: CDC Interconnect Concepts

[Gerard Visser <gvisser@indiana.edu>]

Hi Fernando,
	A small correction is needed. I think the EDAC datasheet is a bit 
unclear. I tracked down the controlling document, which is 
MIL-DTL-21097. It is clear from that that 1800 VAC (2545 VDC) is simply 
the hipot test voltage. It is therefore not to be interpreted as a UL 
operating voltage rating or anything like that. Still, this is a pretty 
high value for a relatively low cost, pcb-mating, connector, I doubt it 
is realistic to go higher.
	What the actual maximum hipot test voltage is, and how much to derate 
from there to a maximum operating voltage, I guess is still an open 
question.

	- Gerard

p.s. Still, I think we should not forget the available current and the 
stored energy at these connector contacts is very very low. It should 
not be difficult to certify that the design is safe. It could require 
that at least some of the resistors used are rated to withstand the full 
voltage, but this may be a worthy idea in its own right...


Gerard Visser wrote:
> Hi Yves, Fernando,
...>
> But, on the other hand, what part number are you looking at
> specifically, Yves. I just now checked EDAC website, for instance this
> connector looks fairly suitable:
> http://www.edac.net/downloads/306-316-356%20Series%20Spec%20Sheet.pdf
> It has a rating of 2545 VDC between adjacent contacts! It comes with
> card guides as an option. Looks good to me.