Why do so many of the small heatsinks use 3M 9448A Double Coated Tissue Tape?
Posted by jpluimers on 2020/08/14
I wonder why so many of the small heatsinks you can buy on for instance Amazon or ebay, use 3M 9448A Double Coated Tissue Tape.
The 3M 8805 Thermally Conductive Adhesive Transfer Tape is so much better (or the twice as thick 3M 8810 Thermally Conductive Adhesive Transfer Tape).
The first is for just sticking, the second for sticking and heat transfer:
- [WayBack] 3M™ Double Coated Tissue Tape 9448A | 3M United States3M™ Double Coated Tissue Tape 9448A is a 0.15 mm double sided tape with a medium firm acrylic adhesive on a tissue carrier that provides dimensional stability, improved handling and ease of die-cutting and laminating. The adhesive provides excellent peel strength adhesion, with good high temperature holding power to a variety of surfaces.
- [WayBack] 3M™ Thermally Conductive Adhesive Transfer Tape 8805 | 3M United States[WayBack] 3M™ Thermally Conductive Adhesive Transfer Tape 8810 | 3M United States3M™ Thermally Conductive Adhesive Transfer Tape 8805 is designed to provide a preferential heat-transfer path between heat-generating components and heat sinks or other cooling devices (e.g., fans, heat spreaders or heat pipes)
Additional Information
The specialized chemistry of this tape renders them modestly soft and able to wet to many surfaces, allowing them to conform well to non-flat substrates, provide high adhesion, and act as a good thermal interface.
Examples of the wrong stuff:
- [WayBack] Black Aluminum Heatsink Cooler Cooling Kit for Raspberry Pi 3, Pi 2, Pi Model B+, 10 Pieces: Amazon.co.uk: Computers & Accessories
- [WayBack] Alumininium heatsinks with thermally insulating adhesive. – Raspberry Pi Forums
- [Archive.is] 8 Stück Aluminium VGA-RAM Kühler/Heatsink 18: AmazonSmile: Computer & Zubehör
–jeroen
https://twitter.com/EricOosterbeek/status/1294138061224210432
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