Low Profile "Header" help needed

On 26/08/2011 04:42, Jim Brain wrote: When I've needed really low-profile things like that, what I've sometimes done is take apart one or two turned pin sockets, and made a PCB that has the pins mounted in it in oversized holed, so the pins from the socket become the pins of the carrier. There's a commercial example of a similar thing at http://onecall.farnell.com/productimages/farnell/standard/42260843.jpg The product that illustrates is described at http://onecall.farnell.com/e-tech/qit-314-s001-95/socket-ic-0-1uf-14way/dp/… although it won't help directly. My usual need is for something like an EPROM with a small number of connections re-routed to different pins. In that case, I drill two sets of oversized holes, one slightly larger than the other. The turned pins in the larger holes become the pins of the carrier, and the turned pins in the slightly smaller holes don't go through quite so far (most turned pins have a step in the socket part). They become the socket, and I break the pins off the bottom of those ones. Another way, but rather taller, is to plug one turned pin socket into another, breaking off the pins on the upper socket in places where they need re-routed, filing down the socket part on the pin underneath that if necessary to ensure no contact, and making the connections for those with wire-wrap wire. You can also get ultra-low profile tape-mounted DIL sockets. Harwin make some, eg http://onecall.farnell.com/harwin/d01f6020001/socket-sil-1-carrier-with-100… and they also make them on a carrier (Farnell part 177-847) Tyco make "Holtite" "zero profile" sockets, but rather fiddly to insert. -- Pete Peter Turnbull Network Manager University of York