Identify this part.

Discussion in 'The Projects Forum' started by mattjmartin, Sep 24, 2010.

  1. mattjmartin

    Thread Starter Member

    Jun 7, 2010
    21
    0
    I need to know what to order from Mouser to get this stinkin thing fixed. Can someone help me out! Q2 is what I am talking about, at it has "720" stamped on it.

    [​IMG]
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    I am guessing that it is an FMMT720 transistor.

    hgmjr
     
  3. hgmjr

    Moderator

    Jan 28, 2005
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  4. prb22786

    New Member

    Sep 19, 2010
    13
    0
    I'm pretty sure I've seen 2n7002 (N-chan enh MOSFET) in a SOT-23 package stamped "720". Thats the trouble with SMT components. Either way you're not going to damage anything if the wrong component is replaced, it just either will or won't work right.
     
  5. tom66

    Senior Member

    May 9, 2009
    2,613
    213
    Q7 also looks damaged.

    Make sure you find the fault which caused both transistors to go pop. Otherwise they might go pop again as soon as you power it up.
     
  6. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    I would agree with the FMMT720. The FMMT619 is the NPN compliment, and is located just south of both 720's in the H-bridge.

    Which also appears KAPUT (as noticed by tom66) at Q7

    And the 2N7002 is marked 702X..not 720.. but not bad from memory prb22786
     
  7. mattjmartin

    Thread Starter Member

    Jun 7, 2010
    21
    0
    Thanks guys! I love this place. Oddly enough, this is for an automatic litter box, and the parts fried because it was stuck on a terd for a week just trying to run the motor. :p

    I'm still going to check everything out though. I sure do love living 15 minutes from mouser!
     
  8. wayneh

    Expert

    Sep 9, 2010
    12,086
    3,025
    OMG, thanks so much for sharing that image. That's one tough doodie. :eek:
     
  9. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    You may want to look into a laxative for the cat...or putting a bigger motor on the scoop arm!

    I would go for the bigger motor. They can be MUCH more predictable then a laxative loaded feline. ;)

    I also have to note the irony between using MOUSEr to fix a cat problem..
     
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