Principal crítica positiva para Dissipador de calor de alumínio em Banggood Brazil|Fazer compras Brasil

14% OFF Dissipador de calor de alumínio 100x41x8mm para resfriar amplificadores de LED e transistores de alta potência 2,30€ 2,67€ View It

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nkmabg 13/04/2018

Good little cooler for power LED's or other electronic equipment that needs cooling. I have not measured, but a good number that is always god to have is thermal resistance. I calculated R(T) as 4.65°C/W at 0.5 m/s (air speed), 2.35°C/W at 1.0 m/s air speed. Without a fan, convection may give some 5°C/watt, if the cooler is mounted with the fins open and vertically. Since some 70% of the power to a LED becomes heat, a 10W LED produces 7W heat. With 5°C/W that is an increase of some 35°C, so that should be OK, in most cases. Here is the calculator I used: https://www.myheatsinks.com/calculate/thermal-resistance-plate-fin/ I intend to use it for 10W LED's.

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