Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

DPAK FET dissipation?

Status
Not open for further replies.
T

treez

Guest
Newbie level 1
Can a DPAK FET dissipate 1W if mounted on a PCB where the extra cooling copper connected to the drain pad is just an extra square centimetre?
 

I will say yes, but better is to check datasheet for particular DPAK (TO-252) FET ?


Best regards,
Peter
 
  • Like
Reactions: treez

    T

    Points: 2
    Helpful Answer Positive Rating
..As with other datasheets, there thermal data corresponds to a part mounted on a copper land of size 25mm square, and I never find that I have that amount of room available on a pcb.
 

Designer of PCB should count on that, or if mistake is made PCB ver 2 should have correction of that lack.

From my expirience usually second or third PCB design is right PCB. First two can be counted as beta release. :smile:


Best regards,
Peter
 
  • Like
Reactions: treez

    T

    Points: 2
    Helpful Answer Positive Rating
No, it cannot DPAK FET dissipate 1W if mounted on a PCB.
 
  • Like
Reactions: treez

    T

    Points: 2
    Helpful Answer Positive Rating
Then why do you ask? :wink:

Also: as always 2 oz copper is used for these graphs, which is not a standard buildup.
 
  • Like
Reactions: treez

    T

    Points: 2
    Helpful Answer Positive Rating
sorry I found the graph after I asked...3W in dpak seems immense, even if 2oz cu
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top