High-Quality High-Performance Copper Heatsink from China Factory | Top Suppliers for Thermal Solutions in Electronics Manufacturer, Suppliers
Product Description
Designed for high-power electronic devices, this copper heatsink maximizes thermal conductivity. Copper is notoriously difficult to machine due to its ductility ("gumminess"), but it offers superior heat dissipation compared to aluminum. This product showcases our ability to handle challenging materials for functional applications.
CNC Milling
We use sharp, polished carbide tools and specific cutting strategies to prevent the soft copper from sticking to the cutter (built-up edge).
Fin Machining
The tall, thin cooling fins are machined with high aspect ratios. We carefully control feed rates to prevent the fins from bending during the cutting process.
Flatness Control
The base contact area is fly-cut to achieve extreme flatness and a mirror-like finish, ensuring maximum thermal transfer efficiency with the CPU or heat source.
Superior Thermal Conductivity
Copper (approx. 400 W/m·K) transfers heat almost twice as fast as Aluminum.
Complex Geometries
CNC machining allows for custom fin shapes and mounting holes that extrusion cannot achieve.
Surface Protection
Can be treated with anti-oxidation coating or nickel plating to prevent tarnishing over time.
Application
Ideal for lasers, 5G base stations, and high-performance computing (HPC) cooling.
A1: CNC allows for prototypes, low volumes, and complex 3D shapes (like pin fins) that extrusion cannot produce.
A: We can suggest hybrid designs (Copper base + Aluminum fins) or optimize the design to reduce machining time.
A3: We vacuum pack parts immediately after cleaning and can apply clear passivation or plating.
Don't let tolerance stack-up delay your product launch. Submit your project details, and our engineering team will evaluate your design for manufacturability before the first cut.
We primarily use C110 (ETP Copper) and C101 (OFE Copper) for heatsink applications. C110 offers excellent thermal conductivity at a competitive cost, while C101 is preferred for ultra-high-purity requirements such as semiconductor and laser cooling systems.
We offer several surface treatment options including electroless nickel plating, electrolytic nickel plating, clear passivation, and tin plating. These finishes protect against oxidation, improve solderability, and maintain long-term thermal performance.
There is no strict minimum order quantity for CNC machined copper heatsinks. We support prototype orders starting from a single piece, as well as low-to-medium volume production runs. This flexibility makes CNC machining ideal for R&D and product development stages.
Using fly-cutting operations, we can achieve a base flatness of ±0.01mm or better, along with a surface roughness of Ra 0.4µm or finer. This mirror-like finish maximizes contact area with the heat source and minimizes thermal interface resistance.
Yes. We can machine precise grooves, channels, and press-fit bores to accommodate heat pipes or vapor chamber assemblies. This allows for advanced thermal management solutions that combine the conductivity of copper with the efficiency of two-phase heat transfer.
Standard prototype lead time is 5–10 business days depending on complexity, fin geometry, and required surface finish. We offer expedited services for urgent projects. After design review and DFM approval, production scheduling begins immediately to ensure on-time delivery.
