Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

JFET DC drain current Pulsed

  1. May 21, 2012 #1
    Hi All,

    i have seen the following parameter in FET data sheet in the maximum ratings column
    DC drain current, Pulsed. What does this parameter represent? In my design how should I take care of this? Could someone please explain me this?

    Thanks in advance,

  2. jcsd
  3. May 21, 2012 #2
    It is power rating. DC current rating is a lot lower because it is continuous. Pulse current is higher because the duty cycle is much lower.

    But you cannot count on the average power or the average current from the pulse can be the same as DC power. Because there might be limitation of the wire bonding, instantaneous temperature spike or other factors inside the FET.
    Last edited: May 21, 2012
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook