Quick and simple heat sink design

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Forced Convection

Specify forced convection with an approach flow velocity, volumetric flow rate or input a fan curve

Natural Convection

Natural convection analysis with the heat sink in the in the vertical or horizontal configurations

Radiation

The ability to include or exclude the effects of radiation and adjust the surface emissivity

Optimization

Automatically finds the lowest temperature design by varying the heat sink dimensions

Below is the demo version of the Heat Sink Calculator, Advanced version with the length fixed at 50mm and the height at 25mm. You can try it out for free. The full version allows you to vary all the parameters shown in the demo version. Sign up for the full version here.

Dimensions/Optimization


Minimize the source temperature by changing:

b: min     max

t: min     max

s: min     max

Air Flow

Ambient Temperature

   


Radiation

Emissivity:


Natural covection

Vertical Base

Horizontal Base

Forced convection

Approach velocity:   

Volumetric flow rate:

Fan Curve:

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Clear Data
Power Source


Thermal Interface

Material Thickness

Thermal Conductivity


Rth-jc:

Materials

Predefined Materials:

Thermal conductivity:

Calculate

Calculating.........

Dimensions/Materials
Height (H) []:
Length (L) []:
Width (W) []:
Base Thickness (b) []:
Fin Thickness (t) []:
Number of fins:
Fin Spacing (s) []:
Material Thermal Conductivity []:
Material:
Air Flow/Radiation
Heat Transfer Mode:
Emissivity:
Heat Sink Orientation:
Convection Dissipation []:
Radiation Dissipation []:
Approach Velocity []:
Volumetric Flow Rate []:
Pressure Drop []:
Power Source
Source Length []:
Source Width []:
Heat Source Power []:
Interface Thickness []:
Interface Conductivity []:
Junction to Case Resistance (Rth-jc) []:
Thermal Parameters
Ambient Temperature []:
Source Temperature []:
Temperature Difference []:
Heat Sink Thermal Resistance []:
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