new cpu's

Discussion in 'Off-Topic' started by Robin Mitchell, Nov 19, 2010.

  1. Robin Mitchell

    Thread Starter Well-Known Member

    Oct 25, 2009
    734
    200
    Hi everyone,

    I might sound retarded but CPU's made today work in the Ghz area, but can you buy transistors that switch that quickly?

    Thanks!
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
    5,939
    1,222
    PMBTH81 PNP 1 GHz Switching Transistor. May perhaps be such a transistor.
     
  3. BillO

    Well-Known Member

    Nov 24, 2008
    985
    136
    There are a few transistors and diodes that can work in the low Ghz frequencies. The problem is their size. They are just too big in discrete form.

    Remember, these new CPU's only work in the Ghz range internally, their external interfaces are all sub-Ghz. The size of the devices, distances between them and length and geometry of the leads and circuit traces all present problems in the form of capacitance, inductance and radiating elements that work against high frequencies.
     
  4. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    Surface mount works better due to what folks are talking about. Another reason it is taking over so thoroughly.
     
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