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Name of "through PCB IC socket rows"

Discussion in 'Datasheets, Manuals and Component Identification' started by TTL, Aug 27, 2019.

  1. TTL

    TTL

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    Oct 24, 2013
    I'm trying to source a particular type of IC socket or pin row but am having little success as I don't know the component name....

    I'm looking for 28 and 32-pin sockets (15.24mm row spacing) with long legs so that they can further be plugged into another identical sized socket on another PCB. A sort of "through" IC socket or perhaps pin rows. What are these called, and if there are several options, what's the best solution for the purpose described above?
     
  2. TTL

    TTL

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    Oct 24, 2013
    I think I found something:
    [​IMG]
    "Wire wrap SIP socket". But I'm concerned about the thick, square shaped legs -won't they force themselves into a normal IC socket and eventually make each contact loose? Is there something similar with thinner legs?
     
  3. 73's de Edd

    73's de Edd

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    Aug 21, 2015
    Those are called machined pins, just use a set of them for constructing your primary IC socket and clip off the unnecessarily long leads.
    Then you do your add on above it, just as you were thinking.
     
  4. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    Look for female pin headers.
    Wire wrap sockets are meant to be used with a wire wrapping gun, not to be soldered to a pcb.
     
  5. 73's de Edd

    73's de Edd

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    Aug 21, 2015
    We don't know the interconnect " room" needed betweeen the two connectors, but the second option certainly leaves less "diddling" room.
     
  6. shrtrnd

    shrtrnd

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    Jan 15, 2010
    Check the Mill-Max website, they make just about everything I've ever needed.
     
  7. TTL

    TTL

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    Oct 24, 2013
    I'm not sure what to look for. Perhaps I haven't explained well enough.

    I have a board like this:
    DMX_1675_50.jpg

    ... and I'm building a small adapter board which plugs into the leftmost EPROM IC socket.
    It'll look a bit like the adapter below (source: Boobip.com):
    [​IMG]

    The same page shows it using pin headers for mounting into a motherboard's IC socket:
    [​IMG]


    But.... I also want to the ability to plug the EPROM on top of the adapter and have it function exactly as before (in other words: an IC socket with legs that extend through the adapter PCB and finally goes into the original EPROM socket. At first I want to try if I can just plug them into the existing voice card socket, but if it ends up very loose I will have to consider desoldering it and permanently soldering the adapter directly into where that socket used to be.

    Apart from the wire wrap type legs (that Harald Kapp pointed out weren't designed for soldering into a PCB (and probably not for plugging into an IC socket either)) I haven't found anything similar but with thin legs.
    I'll keep on looking through the Mill Max website but so far I haven't found anything suitable.
     
  8. Externet

    Externet

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    Aug 24, 2009
    There is also a cousin of the sockets, called ZFI -zero force insertion- that may be of your interest some day :
    [​IMG]
     
  9. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    You can get the female pin headers with extra long pins. Insert them from the top of the pcb so the pins reach a fair bit under the pcb. This way you can stack the pcbs as requested while you still can insert a chip on top.
     
  10. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
  11. TTL

    TTL

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    Oct 24, 2013
    The website you linked to isn't working at the moment, but from the link name it appears you're referring to Arduino stacking headers?
    [​IMG]
    So an EPROM/any IC can be inserted into the top of these?
    One potential problem is that the EPROM will be raised higher than with a normal socket and there might not be enough room for that as another PCB is placed next to the one I'll be placing the adapter in.

    A SIP socket with normal, thin legs appears to be what I'm looking for, but does such a thing exist?

    The male pin header suggested by Bluejets would work if I was to offset one of the EPROMs (instead of having it go directly into its original socket again (but through the PCB) -as shown in the second photo of that BBC model B adapter earlier in this thread. If no suitable pin header is found that may be the only way to go.
     
    Last edited: Aug 29, 2019
  12. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    right.
    You can get these with smaller plastic bodies, too.
     
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