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SPDT 5-Pin Relay

Discussion in 'General Electronics Discussion' started by euta226, Jul 8, 2013.

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  1. euta226


    Jul 8, 2013
    Hello all,

    Very new to electronics and I purchased some relays the other day. Upon receiving them, I was a bit confused by the placement of the 5th pin (COM). It falls between two holes on a PCB and also could not be inserted into a breadboard. Is this normal for this type of relay (

    I had to drill a hole in my PCB to be able to mount it and had to use wires with alligator clips to be able to test it on a breadboard. Would anyone recommend a particular relay (SPST/SPDT) that you had no problem mounting?



    CDRIVE Hauling 10' pipe on a Trek Shift3

    May 8, 2012
    If you want to insure that the relay you buy will match a breadboard pattern you should look for DIP (Dual In-line Package) or SIP (Single In-line Package) footprint relays.

  3. KrisBlueNZ

    KrisBlueNZ Sadly passed away in 2015

    Nov 28, 2011
    Hi James, and welcome to the Electronics Point forums :)

    The TE Connectivity V23079 relay series has all pins on a 0.1" grid and is available in a good range of voltages and configurations. And it's one of the cheapest available from Digikey.

    Digikey have 31 variants in stock; seven of these are THT (through-hole technology). (The other 24 are surface-mount technology, SMT.)
    Last edited: Jul 9, 2013
  4. euta226


    Jul 8, 2013
    Thank you for the responses Kris and CDrive. I guess that saying about when you assume things really applies here, huh? :)

    Thanks CDrive, I'll pay more attention to the DIP/SIP specification on my next purchase.

    Thank you for turning me on to the V20379 line of relays Kris! I'll definitely use those on my next purchase.

    Glad I found this forum!

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