65445
VIS#005051

Part
Number		 Thermal Resistance
°C/W at 20.000in length		 Width
in		 Height
in		 Surface Area
inē/in		 Weight
lb/ft		 Part
Class
65445 0.50 7.34 1.31 62.6 4.80 B

Thermal Curves
based on 20.000 in length
New Length in mm
 Related Links:
How to Read Thermal Curves
Correction Factors in Thermal Performance
Airflow Volume to Velocity Conversion
Cool-CAT Heat Sink Selection Software
The Need for Testing

Natural Convection

  Heat Sink Temperature Rise
Above Ambient 		    Heat Sink
Thermal Resistance
35.0
1.8 3.0 4.0 5.0 5.9 6.7 7.6 8.4 9.1 9.9 10.6 11.3 12.0 12.7 13.4 14.1 14.7 15.4 16.0 16.6 17.3 17.9 18.5 19.1 19.7 20.3 20.8 21.4 22.0 22.6 23.1 23.7 24.2 24.8 25.3 25.9 26.4 26.9 27.5 28.0 28.5 29.0 29.6 30.1 30.6 31.1 31.6 32.1 32.6 33.1
26.2
17.5
8.8
0.0
  5.0 15.0 25.0 35.0 45.0
  
2.00
1.760 1.480 1.337 1.244 1.177 1.124 1.082 1.046 1.016 0.990 0.966 0.946 0.927 0.910 0.894 0.880 0.867 0.854 0.843 0.832 0.822 0.813 0.804 0.795 0.787 0.779 0.772 0.765 0.758 0.752 0.746 0.740 0.734 0.729 0.724 0.718 0.714 0.709 0.704 0.700 0.695 0.691 0.687 0.683 0.680 0.676 0.672 0.669 0.665 0.662
1.50
1.00
0.50
0.00
  5.0 15.0 25.0 35.0 45.0
  Power Dissipated (W)     Power Dissipated (W)

Forced Convection

  Heat Sink Temperature Rise
Above Ambient (50W Dissipated) 		    Heat Sink
Thermal Resistance
  Air Flow (m/s)     Air Flow (m/s)
  1.0 2.0 3.0 4.1 5.1
20.0
14.9 13.8 12.9 12.2 11.6 11.0 10.6 10.2 9.8 9.5 9.2 8.9 8.6 8.4 8.2 8.0 7.8 7.6 7.5 7.3 7.2 7.0 6.9 6.8 6.7 6.6 6.5 6.4 6.3 6.2 6.1 6.0 5.9 5.9 5.8 5.7 5.6 5.6 5.5 5.5 5.4 5.3 5.3 5.2 5.2 5.1 5.1 5.0 5.0 4.9
15.0
10.0
5.0
0.0
  200 400 600 800 1000
  
  1.0 2.0 3.0 4.1 5.1
0.50
0.299 0.277 0.259 0.244 0.232 0.221 0.211 0.203 0.196 0.189 0.183 0.178 0.173 0.168 0.164 0.160 0.156 0.153 0.149 0.146 0.144 0.141 0.138 0.136 0.134 0.131 0.129 0.127 0.126 0.124 0.122 0.120 0.119 0.117 0.116 0.114 0.113 0.112 0.110 0.109 0.108 0.107 0.106 0.105 0.104 0.103 0.102 0.101 0.100 0.099
0.38
0.25
0.12
0.00
  200 400 600 800 1000
  Air Flow (LFM)     Air Flow (LFM)

Building a Part Number

Full Bar Length = 8.00ft

Base Part #
Bar
Length		 Finish Length
(use zeros for full or half bars)
65445
1 Full U Unfinished 0 0 0 0 0
2 Half U Unfinished 0 0 0 0 0
3 Custom B Black Anodized
C Gold Chromate
U Unfinished		 indicate length in inches
to three decimal places;
1 5 2 5 0 = 15.250 "

65445 __ __ __ __ __ __ __

Standard Aavid Thermalloy parts require all 12 positions to be complete.

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Non-Standard Extrusions

Aavid Thermalloy has over 10,000 extrusion profile designs on file, most with the extrusion die already available. These parts have minimum order requirements and longer lead times, but may be cost effective compared to a new design. Contact your local representative or Aavid Thermalloy applications engineer for more information.

Customizing & Advanced Capabilities

We offer several options for those applications which require a more unique solution. For modifications to this part or to create a new, visit the Creating Custom Profiles page or contact your local representative or Aavid Thermalloy applications engineer. Challenge us with your thermal requirements - we can design custom solutions.