Precision Stamped Zipper Fin Heat Sinks

Applications & Functions

Our precision stamped zipper fin heat sinks (high-efficiency heat pipe & interlocked fin cooling assemblies) are engineered specifically to overcome high thermal loads in space-constrained forced-air cooling systems. Manufactured by combining progressive fin stamping with multi-axis CNC secondary machining and reflow soldering, these assemblies feature interlocked zipper fins embedded with copper heat pipes. The interlocking fin design guides air straight through the fin stack to eliminate side air leakage, rapidly pulling heat away from high-power CPUs, LEDs, and power modules for maximum forced-air convection performance.

They are extensively utilized across various high-power electronic, industrial, and telecommunication sectors:

• Enterprise Servers & Computing Infrastructure: Serves as high-performance CPU/GPU air coolers for data center rack servers, workstations, and high-density industrial PCs.

• Telecommunications & 5G Base Stations: Ideal for outdoor telecom transceivers, network switches, and remote radio units (RRU) requiring lightweight, high-capacity heat dissipation.

• High-Power LED & Commercial Optoelectronics: Functions as the central thermal management core for high-bay LED floodlights, stage lighting, and automotive headlight modules.

• Industrial Inverters & Power Electronics: Highly suited for Variable Frequency Drives (VFDs), solar power inverters, and high-voltage IGBT power supply modules.

Outstanding Product Features

• Interlocked Zipper Fin Architecture: Precision stamped fins lock together at the top and bottom to create rigid, gapless side walls that channel forced airflow completely through the fin pack, eliminating pressure loss.

• Embedded Heat Pipe Heat Transfer: Integrated with pure copper heat pipes via reflow soldering, facilitating rapid phase-change heat transport from the heat source to the entire zipper fin surface area.

• High-Precision CNC Milled Baseplate: CNC-milled aluminum or copper contact base achieves micron-level surface flatness (+/-0.005 mm) for direct, zero-gap thermal contact with chips and thermal interface materials (TIM).

• Lightweight & High Surface Area Ratio: Ultra-thin stamped fins (0.2 mm – 0.4 mm) minimize thermal module weight while maximizing available surface area per cubic centimeter.

• Durable Anti-Oxidization Finishes: Available with nickel plating, anodizing, or anti-corrosion chemical passivation to ensure long-term structural integrity and resistance to harsh environmental exposure.

Why Choose Us? 10+ Years CNC Machining Expertise

We operate as an all-around direct source manufacturer  with over 10 years of professional CNC machining and high-precision mechanical component manufacturing experience.

• Direct Factory Price Advantage: Source your zipper fin heat sinks, heat pipe cooling modules, and precision hardware directly from our production workshop to eliminate trading company markups and maximize your procurement margins.

• All-Around Hardware Fabrication Facility: As a comprehensive, all-around production facility, we process a diverse range of high-performance materials including iron, stainless steel, copper, bronze, titanium alloys, and aerospace-grade aluminum alloys to meet exact engineering specifications.

• Bespoke OEM/ODM Turnkey Customization: We machine custom heat sink bases, stamped fin arrays, mounting brackets, and hardware fittings tailored precisely to your CAD/3D STEP models. You can specify fin heights, heat pipe counts, base dimensions, surface platings, and localized laser logo markings.

• Advanced Multi-Axis CNC Milling Infrastructure: Our facility is equipped with state-of-the-art CNC milling centers, precision stamping presses, automated reflow soldering lines, and profiling equipment capable of maintaining tight dimensional tolerances down to +/-0.005 mm.

• Rigorous Thermal & Dimensional Inspection: Every single production batch undergoes severe CMM dimensional audits, optical baseplate flatness validation, solder joint integrity checks, and thread gage tests to guarantee out-of-the-box operational reliability.