Nov 21, 2023 #1 C cupoftea Advanced Member level 5 Joined Jun 13, 2021 Messages 2,659 Helped 54 Reputation 108 Reaction score 116 Trophy points 63 Activity points 13,996 Hi, The following heatsink for DPAK says 31K/W....however, on the Fischer site they dont say the airflow conditions etc for that...do you know it? DPAK heatsink Home - Fischerelektronik - FK 244 08 D PAK www.fischerelektronik.de Normal DPAK RthJA would be about 62degC/W so its amazing these heatsinks arent more popular....heatsink with little manual assembly effort.
Hi, The following heatsink for DPAK says 31K/W....however, on the Fischer site they dont say the airflow conditions etc for that...do you know it? DPAK heatsink Home - Fischerelektronik - FK 244 08 D PAK www.fischerelektronik.de Normal DPAK RthJA would be about 62degC/W so its amazing these heatsinks arent more popular....heatsink with little manual assembly effort.
Nov 21, 2023 #2 D.A.(Tony)Stewart Advanced Member level 7 Joined Sep 26, 2007 Messages 9,062 Helped 1,824 Reputation 3,647 Reaction score 2,219 Trophy points 1,413 Location Richmond Hill, ON, Canada Activity points 59,776 Rth is given under ideal convection conditions. It doubles the surface area exposed to open air perhaps assuming soldered to the solderable area. Upvote 0 Downvote
Rth is given under ideal convection conditions. It doubles the surface area exposed to open air perhaps assuming soldered to the solderable area.
Nov 21, 2023 #3 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,473 Helped 14,756 Reputation 29,794 Reaction score 14,119 Trophy points 1,393 Location Bochum, Germany Activity points 298,322 Suggest to review Aavid board level heatsink catalog as reference. They have similar DPAK heatsinks with full thermal data. Upvote 0 Downvote
Suggest to review Aavid board level heatsink catalog as reference. They have similar DPAK heatsinks with full thermal data.
Nov 22, 2023 #4 E Easy peasy Advanced Member level 6 Joined Aug 15, 2015 Messages 4,775 Helped 1,402 Reputation 2,804 Reaction score 1,956 Trophy points 1,393 Location Melbourne Activity points 26,344 you can assume ideal convection conditions Upvote 0 Downvote