Custom Heat Sinks 丨Aluminum & Copper Heat Sink

A heat sink is a thermal management component used to remove heat from electronic or mechanical devices, such as processors, power modules, LED systems, motors, and communication equipment. It works by transferring heat from the heat-generating component to the heat sink base through direct contact or a thermal interface material. The heat then spreads through the metal body and fins, which increase the available surface area. Air flowing across the fins carries the heat away through natural or forced convection. Common Types of Heat Sinks Straight / Plate Fin Heat Sinks Straight or plate fin heat sinks use multiple parallel fins to increase the available surface area for heat dissipation. This structure works well when the airflow direction is relatively fixed, allowing air to pass smoothly through the fin channels. It is widely used in power supplies, communication equipment, industrial electronics, LED systems, and other applications requiring efficient and cost-effective cooling. Pin Fin Heat Sinks Pin fin heat sinks use round, square, or elliptical pins arranged across the heat sink base. Unlike straight fins, pin fins allow air to flow from multiple directions, making them suitable for applications with changing or less predictable airflow. They can be used with both natural convection and forced-air cooling and are commonly found in processors, power modules, automotive electronics, and compact electronic devices. Radial Fin Heat Sinks Radial fin heat sinks feature fins that extend outward from a central core or cylindrical base. This design allows heat to spread evenly while air enters and exits from multiple directions. Radial fin structures are especially suitable for circular heat sources, LED lighting, motors, cylindrical power modules, and applications where natural convection or axial fan cooling is required. Heat Sink Materials Aluminum Heat Sink Aluminum is the most widely used heat sink material because it provides a good balance of thermal conductivity, low weight, corrosion resistance, manufacturability, and cost. It is suitable for extruded, skived, stamped, and CNC-machined heat sinks. Copper Heat Sink Copper offers higher thermal conductivity than aluminum, making it suitable for high-power devices, concentrated heat sources, and applications requiring faster heat spreading. However, copper is heavier, more expensive, and generally more difficult to machine. Aluminum-Copper Heat Sink Aluminum-copper heat sinks combine the thermal performance of copper with the lower weight and cost of aluminum. A common design uses a copper base or heat spreader to quickly transfer heat from the source, together with aluminum fins to increase the heat dissipation area. Heat Sink Manufacturing Methods Heat sinks can be manufactured using different processes depending on the required thermal performance, structure, production volume, and cost. CNC Machining — Heat sinks are cut directly from aluminum or copper to create precise dimensions and complex features. Extrusion — Heated aluminum is pushed through a die to form continuous heat sink profiles with straight fins. Forging — Aluminum or copper is pressed into shape under high pressure, making it suitable for pin fin structures. Stamping and Fin Assembly — Thin fins are stamped and then joined to a base by brazing, soldering, bonding, or mechanical assembly. Skiving — Thin fins are cut and raised directly from a solid metal block, creating high-density fins without separate joints. Die Casting — Molten aluminum is injected into a mold to produce heat sinks with integrated fins and mounting features. For higher cooling requirements, heat sinks can also be combined with heat pipes, vapor chambers, or fans to improve heat transfer. Why Choose XY-GLOBAL for Custom Heat Sinks? XY-GLOBAL designs and manufactures heat sinks based on your heat load, airflow, installation space, mounting requirements, weight, and cost targets. We can also support thermal simulation and DFM optimization to improve cooling performance and manufacturability. Our manufacturing capabilities include aluminum extrusion, skiving, stamping, CNC machining, brazing, and assembly. With 3-axis and 5-axis CNC machining equipment, we can produce complex fin structures, precision mounting features, and high-flatness contact surfaces with machining accuracy up to 0.005 mm. We work with aluminum, copper, and aluminum-copper structures to balance thermal conductivity, weight, and cost. Surface treatments such as anodizing, powder coating, chromate conversion, and nickel plating are available to improve corrosion resistance, insulation, and durability. Strict quality control covers dimensions, flatness, appearance, cleanliness, and assembly consistency. Inspection equipment includes 2.5D measuring systems and CMMs with accuracy up to 0.001 mm. From rapid prototypes and low-volume production to mass production, XY-GLOBAL provides reliable custom heat sink solutions for electronics, industrial equipment, medical devices, energy storage, telecom, and other thermal management applications. Custom Heat Sink Solutions Every application has different thermal requirements. XY-GLOBAL manufactures custom heat sinks according to your product design, cooling requirements, installation constraints, and manufacturing goals. We support rapid prototyping, engineering validation, and mass production with flexible manufacturing processes. Simply send us your drawings, specifications, or application details, and our engineering team will recommend the most suitable materials, manufacturing methods, and surface treatments for your project.