40tps12a Thyristor 55a

Discussion in 'Electronics Resources' started by Dead Crow, May 7, 2015.

  1. Dead Crow

    Thread Starter Active Member

    Mar 6, 2010
    Hey Guys
    Can someone please recommend an alternative for this thyristor - 40tps12a Thyristor 55a.
    I am doing a project from the evil genius book making a coil gun which shoots nails.
    I am based in Cape Town, South Africa and my supplier doesnt have it. Does the 55a at the end of the name mean it can handle 55amps? I found a similar one
    Vishay, VS-40TPS12A-M3, Thyristor, 1200V 35A, 40mA 3-Pin, TO-247AC
    at rs electronics online but not sure if it can handle the current draw as it says 35a.
    The project uses 4 9v batteries connected together in series I think to create a voltage of 36volts.
    However its not a prolonged current draw so it may be ok. The batteries basically chgarge up caps and then its discharged through a coil wound around an old empty pen which shoots the nail.
    I would post the project but I think it may be a copyrite issue.
    Thanks guys have agood evening
  2. MaxHeadRoom


    Jul 18, 2013
    The original is 35a continuous and 55 rms.
    The sub should work.
  3. Dead Crow

    Thread Starter Active Member

    Mar 6, 2010
    Thanks so much MaxHeadRoom much appreciated