100 w amp

Discussion in 'General Electronics Chat' started by pinoy_ako, Nov 15, 2007.

  1. pinoy_ako

    Thread Starter Member

    Jun 6, 2005
    18
    0
    can anyone tell me the difference between tip147 and tip147f?
     
  2. cheddy

    Active Member

    Oct 19, 2007
    87
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    maybe they are just different shapes. they are for industrial use apparently, the F appears to have a larger surface area, perhaps to attach a heat sink.
     
  3. Gadget

    Distinguished Member

    Jan 10, 2006
    613
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    I think you will find the F version has an Isolated tab, so it can be bolted directly to a heatsink without a washer kit.
     
  4. cheddy

    Active Member

    Oct 19, 2007
    87
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    I feel smart for having figured this out with absolutely no previous knowledge that transistor heat sinks even existed :)
     
  5. Gadget

    Distinguished Member

    Jan 10, 2006
    613
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    They both have the same surface area as far as I know, but the standard transistor case has a metal tab which is electrically and physically connected to the Collector of the transistor chip. If using a heatsink it must be electrically isolated from the heatsink in most instances. The F version uses a composite coated tab which allows thermal transfer while providing electrical isolation.
     
  6. mozikluv

    AAC Fanatic!

    Jan 22, 2004
    1,437
    1
    the TIP147 is a complementary npn-pnp darlington with built in antiparallel EC diode and case in TO-218. It has Ic of -10A

    the TIP147F is pnp darlington with built in antiparallel EC diode and case in TO-03PF. It has Ic of 10A

    moz
     
  7. peranders

    Well-Known Member

    May 21, 2007
    87
    0
    In other words: The same chip but different packages.
     
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