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Discussion in 'Electronic Components' started by Fred Bartoli, Jan 22, 2013.

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  1. Fred Bartoli

    Fred Bartoli Guest


    anyone knows who made the KT3172 optocoupler, and may be has a datasheet?
    It seems I can't find it.

  2. Jamie

    Jamie Guest

    Like a lot of numbers..

    from what I can see it is a 4 pin device ? and if so, the pins 1 and 2
    are the input LED or LED's, if could be an AC type? to test that, you
    can use the diode test and it should test the same both ways as a LED

    The output looks like a NPN transistor. Collector is on 4 and emitter
    on 3.

    But, maybe I have it incorrect..

  3. Franc Zabkar

    Franc Zabkar Guest

  4. Franc Zabkar

    Franc Zabkar Guest

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