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Bonded fin heat sinks are an assembly of a grooved base with individual fins bonded into the grooves. This type of heat sink fabrication allows for higher fin densities and fin aspect ratios than what is manufacturable with extrusion methodologies, greatly improving thermal performance as compared to extruded heat sinks due to increased surface area.

Bonded fin types can be constructed in a few ways. Grooved bases can be extruded, die cast, or machined. Machining can allow for additional features like embedded heat pipes, vapor chambers, or encapsulated graphite heat spreaders. Fins are either punched from coil stock or cut from thin plate stock. The fins are inserted into the base grooves and are joined by epoxying, brazing, or soldering.

The epoxy used for bonding is specially formulated to have high thermal conductivity, however brazing offers greater structural integrity and the best thermal performance. Aavid, Thermal Division of Boyd Corporation employs a variety of brazing techniques including CAB, vacuum, and dip brazing. Aluminum must be nickel plated to be soldered.

借助Aavid广泛多样的标准挤压底座和标准切割铝制翅片组合，我们能够快速设计和制造半定制环氧树脂胶粘翅片解决方案，以及完全定制的采用胶粘或钎焊翅片类型的散热器和系统。