Understanding FET Maximum Ratings: DC vs Pulsed Drain Current

  • Thread starter Thread starter Physicslearner500039
  • Start date Start date
  • Tags Tags
    Current Dc
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
Sign up Log in
1 reply · 2K views
Physicslearner500039
Messages
124
Reaction score
6
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,

Regards,
Satya
 
Engineering news on Phys.org
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: