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  • 3.945" Wide Extruded Aluminum Heatsink
  • 3.945" Wide Extruded Aluminum Heatsink
  • 3.945" Wide Extruded Aluminum Heatsink
  • 3.945" Wide Extruded Aluminum Heatsink

    • 3.945" Wide Extruded Aluminum Heatsink

    $4.71 - $353.25
    (13 reviews) Write a Review
    SKU:
    3.945
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    Product Description

    Extruded Aluminum Heatsink
    Alloy:  6063-T6
    Width: 3.945"
    Fin Height: 2.5"
    Base: .375"
    C/W/3": approximately 1.40
    Weight per Inch: .40 lb

     

    All of our heatsink extrusions are sold by the inch.  To order a more specific length, for example a length of 5.5", you would choose 6" and and indicate your desired cut length in the "Specific cut length" field above.  If you have any questions, please give us a call or send us an email, we would be happy to assist you.

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    13 Reviews Hide Reviews Show Reviews

    • 5
      recent order for heatsink

      Posted by stephen stull on 11th Oct 2022

      great product. superbly produced excellent service

    • 5
      Low cost, high quality

      Posted by H Hartley on 27th Sep 2022

      Incredibly affordable for the base thickness you get. You won't find such a tall or thick heat sink from places like amazon. Cut is high quality, very little bur is left behind.

    • 5
      3.945 heatsink

      Posted by Mark Brownawell on 21st Jul 2022

      A good heatsink, promptly shipped.

    • 5
      Excellent heatsink

      Posted by Gerardo A Gonzalez on 11th Sep 2020

      Best quality, sharp cut. Fast shipping

    • 5
      Heat sink

      Posted by Mark Brownawell on 7th Jun 2020

      This heatsink is a good dissapator

    • 5
      3.945" heatsink

      Posted by Darren John Sanders on 22nd Mar 2018

      One word, Beast. .....

    • 5
      Beautiful piece

      Posted by TB on 1st May 2015

      Beautiful piece. Like a trophy. A shame to have to drill it to use it.

    • 5
      Excellent Quality, Affordable Heatsink

      Posted by Jon on 10th Feb 2015

      I've struggled for years looking through the big electronics outfitters for heatsinks to fit my parts. I've always had to end up cutting into expensive anodized aluminum heatsinks to get them to properly fit to my parts. This 3.945" heatsink is perfect. It came cut to my length specifications very quickly. The machining is precise and the material is of high quality. (Note, the aluminum is bare stock, non-anodized). These are perfect for rapid prototyping or small quantity runs.

    • 5
      A very large fin heatsink.

      Posted by Len Flint on 23rd Jan 2015

      This large sink was cut very straight, and the bottom surface was quite flat. I only had to do a minimum of fine sanding to get an almost mirror finish. I'm testing a 4" piece with a 45 watt LED COB and in stagnant air it's temp only went up to 55 degrees C, with a small breeze it dropped back down to just above ambient. These tests were in the less than desirable horizontal plane.
    HeatsinkUSA, LLC, Aluminum Fabrication, Greenville, MI