Flared pin fin heat sinks are the most innovative and powerful heat sinks available for natural convection
The cooling premium provided by flared pin fins stem from their unique structure
This unique structure is spacious by nature and yet features substantial surface area
The spacious structure minimizes friction and thus is very effective in natural convection
The flared structure is complemented by the themally efficient round pin fin configuration
Cool Innovations is committed to the provision of custom parts in a cost effective fashion, generally without any tooling or setup charges
Customizable parameters include length, width and height
Cool innovations' heat sinks are lapped in order to reduce the contact resistance between the heat sink and the device
Heat Sinks are available with double-sided tape as well as with mechanical attachment methods
Standard pin fins for natural convection range from a footprint of 1.0" x 1.0" to a footprint of 5.0" x 5.0" and from a height of 0.7" to a height of 2.0"
Manufacturing Technology
Flared pin fin heat sinks for embedded devices are manufactured via the Cold Forging process
The cold forging process allows for the use of highly conductive aluminum alloys
The process ensures that no air bubbles, cavities or any other impurities are trapped within the material
Materials
Aluminum pin fin heat sinks are forged from pure aluminum (AL1100)
The thermal conductivity of AL 1100 is 1510 btu/in ft2 hr of. (~50% higher than AL 380, a common cast alloy)
Base Finish
Flared pin fin heat sinks are lapped
The lapping process significantly improves the flatness and the surface finish of the base of the heat sink, when compared to conventional base finishing processes
The contact resistance between the heat sink and the device is reduced significantly following the completion of the lapping process
Flatness: Better than 0.001 inch/inch
Surface Finish: 16 RMS or better
Plating (optional)
Anodize - black, hard black, clear, red
Electroless Nickel (Aluminum and Copper) and Electrolytic Nickel (Aluminum and Copper)
All heat sinks are 6/6 RoHS compliant
Flared pin fin heat sinks offer outstanding cooling power in natural convection
The cooling premium provided by Flared pin fins stems from the unique structural characteristic they possess: a combination of substantial surface area and a sparsely configured pin area
As a result of the wide spacing between the pins, flared pin fins feature very low friction between the air and the surface area and as a result the chimney effect is accelarated
Friction is further reduced to the naturally sparse pin configuration and the round nature of the pins
