Advertisement



  1. Things you need to know about the new ‘Conversations’ PM system:

    a) DO NOT REPLY TO THE NOTIFICATION EMAIL! I get them, not the intended recipient. I get a lot of them and I do not want them! It is just a notification, log into the site and reply from there.

    b) To delete old conversations use the ‘Leave conversation’ option. This is just delete by another name.
    Dismiss Notice

Triac cross-reference help

Discussion in 'd.i.y.' started by lsinclair, May 31, 2016.

  1. lsinclair

    lsinclair pfm Member

    I've been asked by a friend to fix a faulty motor control board. The only active component is a TO-220 marked

    PH
    OT239
    m9317

    so that seems a good starting point. I have discovered that an OT239 is an obsolete triac, but can't find any further information. I think I may have found an equivalent - TS820-600T - but it was on a Japanese site so I'm not 100% certain. Would someone be prepared to spend a few minutes confirming for me?

    Also would it be safe to assume both have the usual triac pinout?

    Many thanks
    Leigh
     
  2. CarrotMan

    CarrotMan pfm Member

    Found a discontinuation notice which lists the OT239 as a "Gen. Purpose Thyristor" (not a triac) and BT258-800R as the recommended replacement. No further information about pin outs etc. but you can easily find the NXP data sheet for the BTR and maybe it's possible to verify that against the board?

    /U.
     
  3. lsinclair

    lsinclair pfm Member

    Yes, a thyristor, my mistake. I don't think the BT258 is current either but as I have seen the TS820-600T listed as the nearest equivalent to that as well, that's what I'll try. Many thanks for taking the trouble to confirm.
     

Share This Page





Advertisement


  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice