Custom Round Sunflower Aluminum Extruded Heatsink
This is a round sunflower extruded heatsink designed for high-power LED applications up to 100W. The outer diameter is 69mm, height is 60mm, and the mounting hole spacing is 28mm.
What makes this design effective is the copper core embedded in the center. Copper transfers heat faster than aluminum, so the heat from the LED chip is pulled away quickly and spread across the aluminum fins. The fins then dissipate the heat into the surrounding air.
It works well for COB LEDs, grow lights, stage lighting, and industrial fixtures where space is limited but cooling requirements are high.
Key Specifications
| Parameter | Value |
|---|---|
| Application | 100W high-power LED |
| Outer Diameter | 69mm |
| Height | 60mm (customizable) |
| Mounting Hole Spacing | 28mm |
| Fin Material | Aluminum |
| Core Material | Copper |
| Manufacturing Process | Extrusion |
Copper Core vs. Solid Aluminum
Most heatsinks are made entirely of aluminum. That works fine for many applications, but for higher wattages, aluminum alone can struggle to move heat away from the small LED chip surface fast enough.
Copper has roughly twice the thermal conductivity of aluminum. By putting a copper core directly under the LED, the heat is transferred quickly to the core and then distributed across the larger aluminum fin area. The result is better thermal performance than a solid aluminum heatsink of the same size.
If your LED runs hot or you are pushing it at full power, the copper core design can help keep junction temperatures under control.
Customization Options
The standard size we offer is 69mm diameter and 60mm height. But we understand that every project has different space constraints and thermal requirements.
Here is what we can customize:
Height – Taller heatsinks have more fin surface area and can dissipate more heat. We can adjust the height based on your available space.
Fin Density and Distribution – More fins mean more surface area, but spacing also matters for airflow. We can increase or decrease fin count and adjust how they are arranged.
Fin Shape and Size – Fins can be made taller, shorter, thicker, or thinner depending on your performance needs.
Materials – We use aluminum for fins and copper for the core as standard. For specific projects, we can also offer other material combinations.
Mounting Holes – Hole positions, sizes, and thread types can be changed to match your PCB or fixture.
Surface Finish – Standard options include silver and black anodized. Custom colors are also available.
If you have a specific design in mind, send us a drawing or sketch, and we will work with you to make it happen.
FAQ
Q: What is the MOQ for this heatsink?
A: For standard sizes, MOQ is 5 pieces. For fully custom designs, we are flexible – contact us to discuss.
Q: Can you anodize it in colors other than black or silver?
A: Yes. We have done blue, red, gold, and other colors. Let us know your color code.
Q: How do I select the right heatsink for my LED?
A: It depends mainly on two things – the LED wattage and the space you have available. Higher wattage needs more surface area. If space is tight, we can optimize fin density to fit. Our team can help with thermal calculations if needed.
Q: Can I get a custom design that is not exactly like the picture?
A: Yes. We can modify everything – fin density, fin distribution, height, materials, size, mounting holes, etc. We design based on your thermal and mechanical requirements.
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