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Part to replace thyristor

Discussion in 'Electronic Components' started by Chris, May 19, 2004.

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  1. Chris

    Chris Guest

    I'm overhauling an old power supply that was handed down to me. The
    case of a thyristor is broken (ST Micro #BTW69-200NS). The only
    readily available replacements I can find are BTW69-600 and
    BTW69-1200. Will these work?

    The datasheet for the original is here:
    http://www.datasheetarchive.com/cgi-bin/q.php?pi=154045

    The datasheet for the replacements is here:
    http://rocky.digikey.com/WebLib/ST Micro/Web Data/BTW67 and BTW69 Series.pdf

    I've tried purchasing it (BTW69-200NS) from a obsolete part vendor,
    but all I need is one, and shipping to Canada becomes expensive.

    Thanks in advance,
    Chris
     
  2. Sounds like a crowbar thyristor, hence the low operating voltage of 200.

    The other two will be fine (600V and 1200V) unless there is something
    super-critical in the circuit in respect of firing currents, but generally
    they'd be OK.

    Peter
     
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