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FOLDED FIN HEAT SINKS

Low Cost Thermal Solutions

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Manufacturing Process

 

Folded fins are created by a progressive stamping method. The fins are then bonded to a base with thermally conductive epoxy, brazing, welding, or similar metallurgical bonds, to create a heat sink. An advantage of folded fin heat sinks is the ability to combine aluminum and copper to tailor the performance of the heat sink to the particular application. If the heat must be spread over a large heat sink base, copper can be used for its high conductivity, yet the heat sink fins can be produced from aluminum, due to its low weight and cost.

Materials

 

  • Aluminum

  • Copper

  • .010″ to .032″ sheets folded into fins

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Specifications

 

  • 24 in (609 mm) max profile width

  • As low as 0.2 mm fin thickness

  • Fin densities from 4 to 38 fins per inch

  • Fin heights from .020 to 2.75 inches

  • Airflow lengths are limited to 610 mm (24″)

Applications

 

  • High density cooling of power modules

  • IGBT’s or transistors

  • Telecommunications

  • Motor drives

  • Automotive electronics

Benefits

 

  • Lightweight

  • Reduced material cost

  • Forced airflow or natural convection

  • High aspect ratio fins

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Tooling Cost

Extrusions
Bonded Fins
Cold Forging
Cold Plates
Die Casting
Folded Fins
Heat Pipes
Skived Fins
Snapped Fins

Production Cost

Extrusions
Bonded Fins
Cold Forging
Cold Plates
Die Casting
Folded Fins
Heat Pipes
Skived Fins
Snapped Fins

Finishing

  • PROCESSES
  • VALUE ADDED
  • CNC machining
  • Drilling
  • Tapping
  • Stamping
  • Anodizing
  • Screen printing
  • Powder coating
  • Laser etching
  • Polishing
  • Embedded fans
  • Thermal greases
  • Screws
  • Springs
  • Clips
  • Embedded heat pipes
  • Phase change materials
  • Back plates
  • Gap filler pads
  • PEMS
  • Standoffs
  • Dielectric pads
  • Compounds
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  • Thermo Cool Corporation
    1370 Tully Road, Suite 506
    San Jose, CA 95122
  • Phone Number:
    +1 408-947-7400
  • Email:
    sales@thermocoolcorp.com

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