Skip to content

Vacuum brazed technology Maximum cooling capacity due to cross-linked molecular structures

Vacuum brazed technology allows the flexible production of high-performance copper or aluminum heat sinks for forced cooling, but is also used for joining the top and bottom of the cooling plates of liquid heat sinks with milled channels. Since vacuum brazing causes cross-linking of the molecular structures of the single heat sink modules, contact resistance is minimal. Brazed heat sinks are suitable for virtually all industrial sectors. Even the cooling of engines with high vibrations is no problem since the joint between the heat sink components is not fatigue critical.

How it works

In vacuum brazing, a brazing alloy is placed between the heat sink modules and heated together with the modules in a vacuum furnace to at least 450 °C. While the heat sink material remains solid, the alloy melts and fills the gaps between the components through capillary action. This produces a one-piece construction with clean and neat joints and no thermal gaps.

The benefits

  • No thermal gaps between the heat sink modules
  • Minimal contact resistance
  • Individual solutions with no tool costs 
  • Production of high-performance heat sinks that are up to 40 percent lighter and compacter than conventional die-cast heat sinks with the same technical properties

Talk to us