COFAN THERMAL

Skived Fin Heatsink

A skived heatsink, also known as a skive fin heatsink or machined heatsink, is a specialized thermal management device used to dissipate heat from electronic components. Unlike extruded or stamped heatsinks, which are formed from a single piece of material, skived heatsinks are crafted by removing material from a solid block through a precision machining process. These heatsinks typically consist of a base and numerous fins extending from it. The fins are thin and closely spaced, providing a substantial surface area for efficient heat dissipation. Precision machining is employed to carve out the fins from the solid block, granting meticulous control over their dimensions and spacing.
Skived heatsinks offer several advantages. Firstly, their closely spaced fins maximize the surface area available for heat dissipation, resulting in superior thermal performance. Additionally, their compact design allows for high fin densities and slender profiles, making them well-suited for applications with space constraints. Moreover, the machining process enables precise tailoring of the fin geometry to accommodate specific thermal requirements. Lastly, skived heatsinks are typically fabricated from materials renowned for their exceptional thermal conductivity, ensuring efficient heat transfer from the component to the surrounding environment.
These Cofan heatsinks find applications across various industries, including consumer electronics, telecommunications equipment, power electronics, LED lighting, automotive electronics, and medical devices. They can be seamlessly integrated with other cooling technologies such as thermal interface materials (TIMs), fans, and heat pipes to further enhance their thermal performance. For instance, TIMs augment thermal conductivity between the heatsink and the heat source, while fans bolster airflow over the heatsink to augment heat dissipation.

- HEAT SINK

Type: Skived Fin Heat Sink
Brand Name: Cofan Thermal
Place of Origin: Dongguan, China
Application: Thermal Management
Delivery Time: 4 Weeks L/T

- Product Information -

Place of Origin:
Dongguan, China
OEM:
Yes
Process:
CNC
Brand Name:
Cofan Thermal
Material:
Copper
Shape:
As Shwon in the Picture
Application:
Thermal Management
Size:
85 x 75 x 35mm
Finish:
Anti-oxidant Finish
Delivery TIme:
4 Weeks L/T

− Cofan's Skived Fin heatsink Processes −

Skived Fin Heatsink

1 Videos

What is a skived fin heatsink?

A skived fine heatsink is manufactured from a single piece of metal (copper or aluminum). Next, thin layers of metal are partially separated from the base metal with a wedge. These layers are then folded back perpendicular to the base. This process is repeated at regular intervals to create the heatsink cooling fins.This one-piece manufacturing construction technology maximizes the thermal performance of the heat sink because the fins and base are unified (no joint). Additionally, this process also enables high fin density (aspect ratios) for optimum thermal performance.

What are the benefits of a skived fin heatsink?

  • High aspect ratio (Fin Density) >50:1 in both Copper and Aluminum without CNC machining. wire EDM or extruding
  • Lower tooling costs
  • No minimum material cost or production runs
  • Preferred technology for replacing obsolete, out-of-stock or low-volume Al extrusion profiles with no material minimums
  • Unitary fin-base construction (no welding, epoxy or brazing)
  • May be integrated with heat pipes liquid cooling and fans for maximum thermal performance
  • Eliminates voids, delamination and inhomogeneous
  • High-density power cooling applications
  • Economical Copper fabrication
  • Quick sample turnaround times with optimum performance

What technology can skived fin heatsink replace?

Extruded Heatsinks

Preferred technology for replacing obsolete, out-of-stock, low-volume Al extrusion profiles with no material minimum or tooling. Skived fin can produce thermally equivalent and near net mechanical equivalency.

Bonded & Folded Fin Heatsinks

The skived fin process is able to create the same fin density as bonded and folded fin technology with improved thermal performance. The improved performance comes as the fins and base plate are integrated as a unitary structure and not bonded with epoxy or brazed creating the optimum thermal path.

Brazed Folded Fin Heat Exchanger Chassis

By integrating the skived fin heat exchanger (as a replacement for folded fins) into the base structure of the chassis, the brazing process can be eliminated. The skived Fin manufacturing process creates the low thermal impedance conduction path without a secondary operation.

Market applications for skived fin heatsinks

Computers & Electronic Components

  • CPU. BGA, GPU & LGA’s professors
  • Server cooling (Fan pack assemblies)

Computers & Electronic Components

  • Network routers
  • Notebooks, memory products

LED Lighting

  • Sports stadium illumination
  • High bay & street lighting
  • Automotive
  • Phototherapy

LED Lighting

  • UVC Sterilization
  • UVC Curling
  • Horticulture
  • Signs & displays (Architectural)

Telecommunications

  • 5G base stadium
  • Antennas arrays
  • Cabinet & enclosure

Telecommunications

  • Backhaul fiber optic modules
  • Radio unit

Industrial Equipment & Components

  • Variable speed motor controls
  • Uninterruptible power supplies
  • Wind turbines & generators
  • Air-to-air heat exchangers
  • EV batteries & recharging
  • Optoelectronics & lasers
  • LIDAR Systems
  • Photovoltaic

Industrial Equipment & Components

  • IGBT Inverters
  • Energy storage
  • Traction drive system
  • Smart grid systems
  • Power microgrids
  • Sic MOSFET’s
  • LASER’s & photonics
  • Solar

Defense & Aerospace

  • Chassis with integrated heat exchangers (May eliminate fin brazing operations)

Defense & Aerospace

  • Metal core PCB’s
Aluminum
Inches
Metric (MM)
Min
Max
Min
Max
*Flow Length
0.39
23.62
10
600
*Width
1.97
62.99
50
1600
Fin Height
0.20
4.72
5
120
Fin Thickness
0.004
0.08
0.1
2
Fin Gap
0.004
2.00
0.2
50
Base Thickness
0.02
1.38
0.5
35
Alloy
1060, 1100, 6063, 6101
Copper
Inches
Metric (MM)
Min
Max
Min
Max
*Flow Length
0.39
11.811
10
300
*Width
1.97
62.992
50
1600
Fin Height
0.20
2.65
5
67.31
Fin Thickness
0.004
0.0394
0.1
1
Fin Gap
0.004
1.378
0.1
35
Base Thickness
0.02
1.378
0.5
35
Alloy
C110

* Maybe Combined with Cofan’s Hybrid Heatsink Manufacturing Process - Friction Stir Welding to produce increased flow lengths and widths.

Need something special? Talk to our engineers today!
Scroll to Top