basic relay info required

Discussion in 'General Electronics Chat' started by mathi123, Aug 19, 2013.

  1. mathi123

    Thread Starter New Member

    Aug 19, 2013
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    I am trying to use a relay for the first time.
    I bought 2 of these and I want to use them in my circuit (5V control voltage).

    However, the relay has 6 pins? The datasheet says it is a Form A, so it should have 4 pins?

    The wiring diagram shows that pin 2 and 5 are connected, but should I connect these in my diagram, or are they internally connected?

     
    Last edited: Aug 19, 2013
  2. odinhg

    Active Member

    Jul 22, 2009
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    15
    It looks like pin 2 & 5, and 3 & 6 is connected internally. If you look at page 2 of the PDF on the page you posted, there is a better drawing.
     
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  3. strantor

    AAC Fanatic!

    Oct 3, 2010
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    Cool Relay. They do that so you have the option to use the pins on the bottom (soldered to board) or the pins on the top (connected via female spade terminalsw/ wire leads)
     
  4. mathi123

    Thread Starter New Member

    Aug 19, 2013
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    Don't quit get that.
    The top and bottom is symmetric, right?
     
  5. strantor

    AAC Fanatic!

    Oct 3, 2010
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    You have 2 options. You can connect to the top of the relay like this:

    [​IMG]

    Or you can connect to the bottom of the relay like this:

    [​IMG]
     
  6. odinhg

    Active Member

    Jul 22, 2009
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    I don't think it actually does have blade connectors on top. It just looks like that in the drawings, but I think it tries to visualize that the pins are tied together internally :)
     
  7. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Thought of doing a bit of reverse engineering with an Ohm meter?
    Max.
     
  8. cornishlad

    Member

    Jul 31, 2013
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    As this is a relatively high current relay for a pcb so 2&5 and 3&6 are connected internally to allow for lower resistance and better soldered connection down to the pcb tracks.
     
  9. strantor

    AAC Fanatic!

    Oct 3, 2010
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    Sure looked like it to me. Check out the other documents. It gives dimensions for the spades and everything.
     
  10. odinhg

    Active Member

    Jul 22, 2009
    65
    15
    Yes you are right. Sorry, didn't see that drawing.
     
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