The Bonded Fin Advantage
Bonded fin heat sinks offer thermal design engineers many benefits over conventional extruded aluminum heat sinks. The increased fin count of bonded fin heat sinks is the result of a tightly controlled assembly technique, allowing fin manufacture as a process independent from base extrusion.
This process removes the conventional fin extrusion ratio limitation dictated by the strength of the steel in extrusion dies. Ratios greater that 6:1 (fin height above the base as compared to the narrowest open space between fins) are common place, but ratios of 8:1 and 10:1 can be done on a limited basis.
Bonded-fin parts offer fin ratios as high as is practical, up to 30:1 and beyond. Increasing the number of fins increases the surface area exposed to cooling air, and greater exposed surface area means more heat transferred away from the electronics.
Features and Benefits
• Dissipate more heat than conventional heat sinks with the same footprint
• Reduce heat sink and overall system volume
• Increase the aluminum extrusion cooling surface area by two to three times
• Thermoelectric modules
• Uniterruptable power supplies
• Variable speed motor controls
• AC welding switches
• Power rectification equipment
• Laser power supplies
• Traction drives