How long can a mini relay stay energized?

Discussion in 'General Electronics Chat' started by kgstewar, Jul 27, 2013.

  1. kgstewar

    Thread Starter Member

    Apr 5, 2012
    151
    6
    I have one of these little relays and would like to use it to switch on a circuit that draws about 2 amps at 12V. My question is, how long can the relay stay energized at a time? My worry is that if left on too long the coil will overheat. Is that a valid concern?

    http://www.taydaelectronics.com/datasheets/A-5014.pdf

    Thanks!

    Kevin
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,986
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    A 12v coil takes 30 milliamps, no way will it heat up...
     
  3. MaxHeadRoom

    Expert

    Jul 18, 2013
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    ...or dissipate 36Mw.
    Max.
     
  4. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    years and years
     
  5. MaxHeadRoom

    Expert

    Jul 18, 2013
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    I'm not so sure about that...see where it's made!!
    Max.:)
     
  6. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    Well yes that i agree with.. But usually the crappy relays just have problems with repeated switching (or frankly even switching at all) and seeing as this is just an on for good deal 99% of the time I wouldn't worry too much about it.

    But yes personally I ONLY trust Omron, American Zettler, TE(axicom) and Hasco relays. Omron is #1 and you pay for that ranking though.
     
  7. mbohuntr

    Active Member

    Apr 6, 2009
    413
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    YUP! I ordered 5 Hong Kong reed relays for an alarm system, and now I have 4 as one has already started latching up after 10 cycles... :rolleyes:
     
  8. Ramussons

    Active Member

    May 3, 2013
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    360 mW :D

    Ramesh
     
  9. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Right, I missed a zero!
    Max.
     
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