A precision machined Heatsink is an ideal choice for smaller production requirements as there are no Non Recurring Engineering charges (NRE). With highly versatile machining capabilities, Radian Thermal Products provides high precision heatsinks with complex features, contours, cut-outs and through-holes. Combined with a full range of finishing we are your reliable source for quality, affordable machined heatsinks. Machined heatsinks are typically made from Aluminum 6061 or Copper C1100, and quick turn prototyping is available. Although larger designs are possible, typical limits are typically 20 fins – 1.2” high.
What is a Machined Heatsink?
We are a leading manufacturer of machined heatsinks, known for producing high-quality products that meet the demands of the electronic industry. Our team of experienced engineers uses the latest technology and equipment to manufacture heatsinks that are efficient but also durable and cost-effective.
Our machined heatsinks are made from high-quality materials, such as copper, aluminum, and other alloys, carefully selected to provide optimal thermal conductivity and heat dissipation. We offer many heatsink designs for different applications and requirements, including extruded, folded, and skived fins.
One of the critical features of our machined heatsinks is their precision and accuracy. We use advanced CNC machining techniques to ensure that each heatsink is manufactured according to our customer’s specifications and tolerances. This results in a consistent and reliable product that performs optimally under different operating conditions.
Copper is tough to machine so we usually recommend the forged, skived , or stamped fin processes. For larger volume Aluminum production, our team will also investigate extrusion, and Die-cast processes.
Machined Heatsinks Using State-of-the-Art Equipment
In the first half of 2025, Radian’s machining division completed the acquisition of a Matsuura MX-420. Capable of handling a 10 pallet work setup up to 175 lbs, which is 100 lbs more than the UMC500 AX5 pallet system, the MX-420 PC10 allows for the automation of significantly heavier parts. Its ergonomic design, coupled with Matsuura’s advanced unmanned automation capabilities, thus ensures up to 85% uptime. This machine seamlessly supports both manned and unmanned operations, making it adaptable to diverse production environments.
The upgrade of the machine shop was followed by the acquisition of the Trinity AI-1 automated part-loading system, built with Intrinsic Intelligence, an advanced robotics systems adapted to high-mix, short-run production. The Trinity AI-1 is an adaptive CNC automation that learns, adjusts, & executes — delivering reliable, unattended production across changing part demands. The result is lights-out manufacturing for quick-turn prototyping.
Precision Machining Capabilities in Santa Clara, CA., Taiwan and Vietnam
Machined Heatsink Examples
In this example a machined heatsink was rapidly designed and manufactured. The customer also wanted to use corporate colors in the coating.
In this example, a large 300mm X 140mm X 60mm custom heatsink was completely machined from billet including additional needed precision features
In this example an extruded heatsink was machined so that it could fit an assembly. After the machining the part was anodized.