Custom Extruded Heat Sinks
Extrusion is the most cost effective manufacturing method in producing plate fin and cross cut heat sinks. Both the tooling and unit price are the lowest among all mass production processes. The material A6063 used in extrusion has excellent mechanical properties and surface appearance. The thermal conductivity of A6063 is slightly lower than pure aluminum (which is used in cold forging), but much higher than the alloys used in die casting. Secondary machining will increase the overall cost, but unless extensive machining is required, the overall cost is still relatively low.
Benefits of Extruded Heat Sinks
Compared with other manufacturing methods, extruded heat sinks offer the following benefits:
- Most cost effective
- Best thermal performance for forced convection
- Extruded from A6063 with high thermal conductivity (209 W/m-K)
- Good for medium- to high-airflows
- Excellent surface finish and appearance
- Length can be customized without new tooling
- Secondary operation are easy to achieve
- Cross cut extrusions offer omni-directional properties
Considering the low tooling and manufacturing costs, we recommend customers to consider custom-designed extrusions for all applications to achieve the best (optimized) performance.
Maximum Dimensions of Extruded Heat Sinks
The maximum dimensions we can extrude and cross cut are:
- Maximum width: 120 mm
- Maximum height: 50 mm
- Maximum aspect ratio (Fin height divided by fin gap): 10-20
Please note the actual manufacturability is affected the fin geometry and other factors. Please contact us to determine if your part can be made.
Available Off-the-Shelf Heat Sinks
We currently offer the following standard heat sinks for customers to choose: