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Help identifying ICs

Discussion in 'Electronic Basics' started by Chris Osborn, Sep 20, 2004.

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  1. Chris Osborn

    Chris Osborn Guest

    I have a handful of chips here that I can't figure out what they
    are. Their markings are:

    UA3403PC
    F7827
    DJAKARTA

    UA3403PC
    F7828
    DJAKARTA

    6915A
    7118432

    MOC
    3031
    8343

    Or if a picture would help (it's quite large):

    http://fozztexx.com/~fozztexx/UnID-IC.jpg
     
  2. Tom Woodrow

    Tom Woodrow Guest

    google UA3403 ... quad op amp

    7827 = 27 week of 1978 etc

    google MOC3031 ... zero crossing triac driver

    8344 date code = 44 week of 1983

    Tom Woodrow
     
  3. Bubba Jones

    Bubba Jones Guest

  4. Hi,

    And how about a guess at a 711 dual-comparator for the last
    one.

    Cheers - Joe
     
  5. Maybe, but that seems to be the date code. At least, the others have
    date codes of 83/84 (except for the one with a '78 date code) and you
    can be sure of those dates since the IC numbers are very clear. That
    number with the 711 has a bit that has an 83 or 84 in it, which matches
    the vintage of the other ICs.

    Michael
     
  6. A search on Texas Instr. web site http://www.ti.com/ gives only one hit
    for 6915A

    -5.2Vout 12W 3.3V-Input Adjustable Plus to Minus Voltage Converter
     
  7. Dan Fraser

    Dan Fraser Guest

    GOOGLE!!!!!
     
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