17 Feb
2003
17 Feb
'03
4:42 a.m.
From: "Charles H. Dickman"
<chd_1(a)nktelco.net>
Is there a replacement for the Berg connectors?
I am talking about the 100mil spacing, dual inline connectors that had
individually insertable, crimp contacts. The AMP MT connectors look like
a replacement. Does anybody have experience with this?
I have used others, may of been amp. The main problem is that when using
standard 40 pin connectors they are narrower so it is possible to misalign
when plugging in the cable. I have put a blob of glue on the ends of the
connector to take up some of the slop so I can't plug them in wrong. DEC
used a 44 pin connector for the discrete wire which doesn't seem to be common.
17 Feb
17 Feb
5:15 a.m.
New subject: North Star Controllers
I have a number of North Star Floppy controllers. They are all marked
MDC-4A (IIRC). And I have a couple of manuals that are marked MDS-A. I
have always assumed they were just a different model.
But I got another this weekend and it was from a guy that was miticulous
about saving everything. Has all his notes and even the original sales
receipts.
But the MDC-4A came with an MDS-A manual. Now I'm a bit confused.
Is there a controller with the part number of MDA-A? If so, is it
significantly different than the MDC-4A?
5:58 a.m.
--- David Gesswein <djg(a)drs-esg.com> wrote:
Are those exact ones that DEC used still available? I finally found my
crimp tool (after many months of searching), but I have no pins and no
shells. I would be interested in purchasing a quantity of 44-pin and
14-pin (for DLV11Js, etc.) shells along with a bag of hundreds of pins,
presuming such things are still purchasable.
-ethan
From:
"Charles H. Dickman" <chd_1(a)nktelco.net>
Is there a replacement for the Berg connectors?
I am talking about the 100mil spacing, dual inline connectors that had
individually insertable, crimp contacts...
...DEC used a 44 pin connector for the discrete wire which doesn't seem
to be common. 
7:54 a.m.
The pins for these "BERG" harmonica style connectors (we used them *way
back* for DLV11J and other connections) can still be found at
Mouser. They're a bit pricey though - about $.25 per pin in large
quantities. Mouser's part number is 649-47712-000. I'd recommend this
part over the others available, as it has a nice "grab" and a 40 micron
gold flash which gives it good wear characteristics. We used *lots* of
these back in the 1980s and in ugly industrial locations which would eat
the tin off of cheaper connectors - *none* of the BERG pins ever failed.
I found something that looks similar in the Digi-Key catalog (e.g.
WM2555-ND) which sells for about $.10 each in thousands but have no
experience with this one. Not even sure the crimper would work - and
that'll set you back a few hundred bucks if you need one!
-Gary
At 08:55 2/17/2003 -0800, you wrote:
Are those exact ones that DEC used still available? I
finally found my
crimp tool (after many months of searching), but I have no pins and no
shells. I would be interested in purchasing a quantity of 44-pin and
14-pin (for DLV11Js, etc.) shells along with a bag of hundreds of pins,
presuming such things are still purchasable.
-ethan
8:33 a.m.
--- Gary Oliver <go(a)ao.com> wrote:
The pins for these "BERG" harmonica style
connectors (we used them *way
back* for DLV11J and other connections) can still be found at
Mouser. They're a bit pricey though - about $.25 per pin in large
quantities. Mouser's part number is 649-47712-000.
I ordered a few to test with my crimper - They don't do freebies on
this part. :-( Hopefully they will fit. The drawing looks like
the ones I used to use.
I found something that looks similar in the Digi-Key
catalog (e.g.
WM2555-ND) which sells for about $.10 each in thousands...
Hmm... not sure if those fit the housings or not. Given the cost of
a crimp tool, though, the parts at Mouser look quite attractive.
I was contemplating buying 500 or 1000 pins if these work out.
Thanks for the tip.
-ethan
9:21 a.m.
--- Gary Oliver <go(a)ao.com> wrote:
The pins for these "BERG" harmonica style
connectors (we used them *way
back* for DLV11J and other connections) can still be found at
Mouser. They're a bit pricey though - about $.25 per pin in large
quantities. Mouser's part number is 649-47712-000.
After a little more research, I've discovered that Mouser's part numbers
are "649" + the FCI "real" part number. FCI has a nice chart at
http://www.fciconnect.com/basics/basics_america_pdf/crimptowire_contpins.pdf
Allied has something at
http://www.alliedelec.com/catalog/catalogpages/2002/303.pdf
Thanks for the initial part number... that was what I needed to kick
off my search.
-ethan
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