Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

CYCLONE V FPGA Thermal Resistances

I am gonna use the following model of CYCLONE V FPGA (With device number 5CGXFC3B7U15C8N) and as I checked on the website for the values of the 6 thermal resistances (http://www.altera.com/support/devices/packaging/specifications/pkg-pin/dev-package-listing.jsp?device=cyclone_v), I found the following numbers:

26.5

223.3

20.3

18.6

5.7

11.0

It was really impressive that the 2rd value (θ[sub]ja[/sub] (° c/w) at 100 ft./min.) is 10 times bigger than the first one (θ[sub]ja[/sub] (° c/w) still air) !!! An in comparison with the values of all the other models, I tend to think that there is a typo-mistake there (it is 23.3 and not 223.3). But is it possible to confirm that?

Thank you very much in advance!

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    --- Quote Start ---

    I would open a Service Request on this with Altera tech support.

    --- Quote End ---

    Thank you for the fast reply and I am sorry for my late answer. How and where can I do that?