Power Mosfets vs SCRs

Discussion in 'Electronic Design' started by gyansorova@gmail.com, Jun 9, 2007.

  1. Guest

    What's the highest current an SCR can handle versus a Power Mosfet? I
    assume SCRs are still way out in front but are Mosfets faster?

    W.King
     
    , Jun 9, 2007
    #1
    1. Advertisements

  2. D from BC Guest

    On Fri, 08 Jun 2007 21:00:25 -0700, wrote:

    >What's the highest current an SCR can handle versus a Power Mosfet? I
    >assume SCRs are still way out in front but are Mosfets faster?
    >
    >W.King


    Let's say an SCR and a Mosfet are in TO-220 packages.
    I'll say mosfet handles more current.
    (SCR Vsat vs Mos Rdson)

    As for speed contest...
    I dunno...
    But I'll guess mosfet again due to a push for advancements in
    efficient smps's..
    D from BC
     
    D from BC, Jun 9, 2007
    #2
    1. Advertisements

  3. Wimpie Guest

    On 9 jun, 06:00, wrote:
    > What's the highest current an SCR can handle versus a Power Mosfet? I
    > assume SCRs are still way out in front but are Mosfets faster?
    >
    > W.King


    Hi King,

    SCR are available in the high kA range, >1000V, Mosfets are available
    in the several 100 A range, There is also an IGBT that is also
    available in the kA range (of course not in standard semiconductor
    cases like TO 220, 247, etc). check www.eupec.com (part of
    infineon).

    When it comes to speed, the MOSFET is the fastest followed by the
    IGBT. Both MOSFET and IGBT can be turned of during conduction, the SCR
    will only turn off when the current drops below a certain value (hold-
    current).

    When it comes to high voltage application >600V, the IGBT outperforms
    the MOSFET (conduction losses in MOSFET are mostly higher because of
    high RDSon).

    Whether to use and SCR, IGBT or MOSFET depends on your application.
    Here also commercial aspects will count.

    When you do a search with both MOSFET, IGBT, thyristor and
    "comparison", you will probably find documents that will help you to
    make the right choice.

    Best regards,

    Wim
     
    Wimpie, Jun 9, 2007
    #3
    1. Advertisements

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Similar Threads
  1. perfb
    Replies:
    13
    Views:
    1,682
    Mike V.
    Aug 3, 2004
  2. Replies:
    7
    Views:
    1,644
    Frithiof Andreas Jensen
    Jul 24, 2007
  3. MR COFFEE
    Replies:
    14
    Views:
    1,425
    Jasen Betts
    Aug 5, 2007
  4. MR COFFEE
    Replies:
    14
    Views:
    1,765
    Jasen Betts
    Aug 5, 2007
  5. Paul E. Schoen

    Varistor across two SCRs

    Paul E. Schoen, Aug 18, 2007, in forum: Electronic Design
    Replies:
    18
    Views:
    898
    Paul E. Schoen
    Aug 21, 2007
  6. KW

    Hockey puck SCRs

    KW, Dec 12, 2007, in forum: Electronic Basics
    Replies:
    2
    Views:
    2,159
  7. Tim Williams

    Identify diodes and SCRs

    Tim Williams, Jun 3, 2008, in forum: Electronic Design
    Replies:
    2
    Views:
    580
    Tim Williams
    Jun 3, 2008
  8. Replies:
    89
    Views:
    6,544
    Frank Olson
    Feb 4, 2006
Loading...