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Heat Sink Performance Calculator
Forced Convection Fin Pack with Solid Metal or Vapor Chamber Base
Design Tips
1. Length - up to 500mm
2. Fin Thickness - ranges from 0.2-0.6mm
3. Fin Spacing - should be at least 2X the fin thickness
4. Fin Height - between 3-100mm. Watch fin efficency - don't make the fins taller than useful.
5. Materials - aluminum or copper. Both can be nickel plated for corrosion resistance.
Notes - Airflow in this model assumes zero bypass.
Inputs (in yellow)
Heat Source Info
Power (Q)
Watts
Heat Source Length
mm
Heat Source Width
mm
Heat Source Location
Center
Corner
Edge
Center, Corner or Edge
Heat Source Area
cm
2
Power Density
W/cm
2
Heat Sink Base Info
Base Length
mm
Base Width (Standard)
12.5
14.0
15.5
18.6
20.1
23.0
23.5
25.6
30.3
34.5
40.0
46.8
50.0
57.5
67.4
76.0
83.0
109.0
mm
Material (Metal Base)
Aluminum
Copper
Aluminum or Copper
Base Thickness
3.0
3.5
4.0
mm (VC and Metal Base)
Fin Pack Info
Fin Height
mm
Fin Thickness
0.20
0.30
0.40
0.50
0.60
mm
Fin Gap
mm
Air Flow
CFM
Fin Material
Aluminum
Copper
Aluminum or Copper
Ambient Temperature
Fin Efficiency
TIM
Interface Material
Perf. Grease
Std. Grease
Thin Pad
Thick Pad
Results
Air ∆T
°C
Fin to Air ∆T
°C
Fin ∆T
°C
Total Fin Pack
∆T
°C
Fin Pack Rth
°C/W
" H
2
O
PA
TIM ∆T
°C
Base - Fin
∆T
°C
Vapor Chamber
Metal Base
Base ∆T
°C
Total Heat SInk ∆T
°C