On Fri, 12 Sep 2014, Noel Chiappa wrote:
Hey, all, I'm looking for a source for 40-pin
connector shells (to hold
female pins) for 2.54mm so-called Berg or Du Pont connectors. Anyone
have a source they can point me at? (I would call these male shells -
since they go into the female shells with male pins typically found on
circuit boards - but I gather the terminology is somewhat confused.)
The small ones (1-10 pins) are easy to find (they are used for audio/USB
connectors); the 40-pin females for use on ribbon cables are also easy
to find, as are the males that go into PCBs... but the 40-pin insertable
pin females appear to be unobtanium.
(I want them because a number of old DEC interface cards use them for
cables, and I refuse to pay $139 or whatever for a cable that's made of
a total of a couple of bucks worth of parts - I'm quite happy to roll my
own.)
It just so happens I also ordered some of these for some of my own
projects. I had a very hard time finding the datasheet, but I did finally
find a link for it. FCI bought out Dupont's connector division a long time
ago, so what you are looking for is FCI's Mini-PV series.
http://portal.fciconnect.com/Comergent/fci/documentation/950531-005_pv_mini…
For a 2x20 (40 position) housing, the root part numbers are:
65043-017 non-polarized
65846-024 polarized
I have no idea if you'd need the polarized or non-polarized housings in
this application.
For the contacts, you'd want the standard force contacts, which are much
cheaper than high force contacts. For 30uin gold over 50uin nickel, the
root part numbers are:
22-26 AWG 48235-000
28-32 AWG 48238-000
I'd advise against buying these type of contacts on eBay. 99% of the
"Berg" or "Dupont" contacts on eBay are knock-offs and don't have
decent
plating (gold flash, if they have any gold on them at all) and aren't made
to have the correct gripping force. You also never know what sort of weird
alloy they are made from and they might not even fit a real HT-95.