On Sat, 9 Jul 2016, Mike Stein wrote:
From: "Tothwolf" <[email protected]>
On Sat, 9 Jul 2016, Oliver Lehmann wrote:
Hi,
for rebuilding a circuit, I'm in need of 3 old connectors used on the
original board.
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The next one is also a power plug - but I have no idea about its AMP
number or something:
http://pics.pofo.de/gallery3/index.php/S8000/S8000_boards/FINCH-Adapter-Board/IMGP9588
http://pics.pofo.de/gallery3/index.php/S8000/S8000_boards/FINCH-Adapter-Board/IMGP9589
http://pics.pofo.de/gallery3/index.php/S8000/S8000_boards/FINCH-Adapter-Board/IMGP9584
Its counterpart is shown here and labled with AMP, but no number:
http://pics.pofo.de/gallery3/index.php/S8000/S8000_case/Disk-Tape-Component/Secrets-S8000/DSCF0366
The header on the board appears to be a Molex KK 396 series header. The
plug on the wiring harness is an AMP MTA-156 series IDC connector. I'm not
sure why they mixed and matched connectors, but they both use the same
size pins with .156" spacing. The Molex header might retain the plug
better than the AMP header due to the friction lock.
Molex 26-60-5100 KK 396 Header, Right-Angle with Friction Lock, 10
Circuits, Tin (Sn) Plating
http://www.molex.com/molex/products/datasheet.jsp?part=active/0026605100_PCB_HEADERS.xml
http://www.molex.com/pdm_docs/sd/026605100_sd.pdf
http://www.molex.com/webdocs/datasheets/pdf/en-us/0026605100_PCB_HEADERS.pdf
AMP 640389-0 MTA-156 Friction Lock Headers - Right Angle front bend, .125"
solder tail
http://www.te.com/usa-en/product-1-640389-0.html
http://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Data+Sheet%7F82056_MTA%7F0708%7Fpdf%7FEnglish%7FENG_DS_82056_MTA_0708.pdf%7F1-640389-0
The Molex version looks like it has round pins; I'd recommend
rectangular pins with your matching connector, they're prone to overheat
at the best of times.
Both the Molex and AMP/Tyco headers above have square pins. I use both
series and have them in my inventory. Round pin .156" (3.96mm) headers
have been discontinued for years due to that very issue. The flat contacts
used in the connector shells don't make good contact with round pins since
it offers less surface area than a square pin. As they age and oxidize, it
gets even worse. I routinely replace older .156" round pin headers with
modern square versions as preventative maintenance when I
service/refurbish boards.
