Thermal Resistance Tool for Bonded Fins
Aavid Thermalloy offers 42 different base profiles to which fins with heights from 25mm to 140mm (1.0 inch to 5.5 inches) can be attached. Performance datasheets can be generated for any combination of base profile, fin height, and length.
Predicting Thermal Performance
Use the following steps to determine thermal resistance (°C/W) for various bonded fin lengths at different air velocities.
*Actual thermal performance will vary with the amount and position of the heat input(s). Values determined by this calculation can be used for comparisons between various Aavid Thermalloy bonded fin heat sinks. br> Thermal resistance = 0.295 °C/W (approximately*)
Example br> To calculate the thermal resistance of a 5.0" long by 2.40" wide bonded fin base #66825 with 16 fins at 2.0" high with air velocity of 500 LFM, enter the values in the text boxes and click the calculate button.
Related Factors br> Fan manufacturers rate their fans by volume of output. In order to use this tool correctly, volume must be converted to velocity by using Airflow Volume to Velocity Conversion Chart. Remember to derate for static pressure head.