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Discussion in 'Introductions' started by hsiboy, Nov 11, 2016.

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  1. hsiboy


    Nov 11, 2016
    Hi everyone,

    i signed up because i came across a thread where a chap had asked what component had blown in his bathroom fan.

    he said he thought it was a transistor, and that it had the part number 20103.

    The responses he got got were not that helpful, but as one poster suggested it probably was a triac or thyristor and not a transistor.

    So, i stumbled across that post, and thought aha, i know what that is (i have the same bathroom fan). So i signed up to reply, so i could help the OP out - he was right that it probably was just a cheap component and not a whole £38 PCB - then realised the post was from 2004!!

    So, I've no need to be here, i've always been more of a lurker anyway.

    So the answer was, it was an ST Z0103ma 600v 1A triac in a plastic TO92 package. They have a 5ma gate, and their failure mode (over current) is to explode (his fan motor may be bad).

    So, this is probably my first, and only post.


  2. Minder


    Apr 24, 2015
    You never know..........One day...o_O
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