Skived Fin Heatsink
PRODUCTS
Skived Fin Heatsink | High-Density Thermal Management Solutions
Cofan’s Skived Fin Heatsinks are advanced thermal management devices engineered for high-performance cooling of electronic components. Manufactured using precision skiving technology, these heatsinks are crafted from a single block of high-conductivity aluminum or copper, forming both the base and fins as one seamless unit. This integrated construction maximizes thermal conductivity, eliminates joint resistance, and enables high-density fin arrangements for superior heat dissipation.
Product Information
- Process: CNC
- Material: Aluminum
- Application: Thermal Management
- Finish: Anti-oxidant
- Part No: 06.01.00031
Product Information
- Process: CNC
- Material: Aluminum
- Application: Thermal Management
- Finish: Black Anodizing
- Part No: 06.01.00032
Product Information
- Process: CNC
- Material: Aluminum
- Application: Thermal Management
- Finish: Anti-oxidant
- Part No: 06.02.00033
Product Information
- Process: CNC
- Material: Aluminum
- Application: Thermal Management
- Finish: Anti-oxidant
- Part No: 06.03.00034
Product Information
- Process: CNC
- Material: Copper
- Application: Thermal Management
- Finish: Anti-oxidant
- Part No: 06.03.00036
Product Information
- Process: CNC
- Material: Aluminum
- Application: Thermal Management
- Finish: Black Anodizing
- Part No: 06.03.00039
− Cofan's SKIVED FIN HEATSINK −
− Cofan's Skived Fin heatsink Processes −
Skived Fin Heatsink
What Is a Skived Fin Heatsink?
A skived fin heatsink is created by partially cutting thin layers of metal from a solid base using a precision wedge tool. These layers are then folded upright to form cooling fins. This process is repeated at exact intervals to produce closely spaced fins with a high aspect ratio, significantly increasing the available surface area for heat transfer.
Unlike extruded, bonded, or stamped heatsinks, the skived process produces a monolithic structure—the fins and base are a single piece of metal with no adhesives, soldering, or brazing. This ensures minimal thermal resistance and a direct, efficient path for heat conduction.
Advantages of Skived Fin Heatsinks
- High Fin Density – Aspect ratios exceeding 50:1 in both copper and aluminum without CNC machining, wire EDM, or extrusion.
- Superior Thermal Performance – Seamless base-to-fin interface eliminates thermal barriers.
- Design Flexibility – Customizable fin geometry, spacing, and height for specific thermal and spatial requirements.
- Cost Efficiency – Low tooling costs, no minimum production quantities, and economical copper fabrication.
- Fast Prototyping – Quick sample turnaround for design validation and thermal testing.
- Integration Ready – Easily combined with heat pipes, liquid cooling systems, and fans for enhanced cooling.
- Reliability – No voids, delamination, or inhomogeneity associated with bonded or brazed fins.
Technologies Replaced by Skived Fin Heatsinks
- Extruded Heatsinks
Ideal for replacing obsolete or unavailable aluminum extrusion profiles with thermally equivalent, near-net shape designs without minimum order requirements. - Bonded & Folded Fin Heatsinks
Matches or exceeds the fin density of bonded/folded designs while offering better thermal performance through integrated construction. - Brazed Folded Fin Heat Exchanger Chassis
Eliminates the need for brazing by integrating the fin array into the base structure, reducing cost and improving conductivity.
Standard High Power Electronics Heatsinks
CofanThermal’s PowerFin heatsinks are engineered to provide optimal thermal management for high-performance, high-power, electronic devices. These heatsinks are designed to ensure efficient heat dissipation, improving device reliability and extending operational lifespan. Suitable for applications across industrial, automotive, telecom, and renewable energy sectors these heatsinks are optimized for cooling in natural or forced convection air-to-air regimes.
When standard off-the-shelf solutions cannot meet your specific requirements for thermal performance, form factor, space constraints, material preferences, noise reduction, aesthetics, or cost considerations, Cofan provides the capability to manufacture and offer custom skived fin heatsink designs. Outlined below are the geometric and mechanical design criteria for skived fin heatsinks.
|
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
|
0.1
|
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
|
4.7244
|
5
|
120
|
|
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
|
|||
Skived Power Fin Aluminum Heatsink Series
Manufactured with Cofan’s proprietary skived fin technology, this one-piece design maintains a monolithic, seamless heat path between the thermal base and fins.
Natural Convection Optimized Product Series
- CFD-optimized fin spacing, thickness, and base geometry for passive cooling
- Constructed from electrical-grade, ultra-high thermal conductivity aluminum
- Custom machining and width/length configurations available
Natural Convection Part Number and Specifications Table
|
|
Width
|
Height
|
Flow
Length |
Fin
Thickness |
Fin
Spacing |
Base
Thickness |
Number
of Fins |
Weight
|
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Part Number
|
Inches
|
mm
|
Inches
|
mm
|
Inches
|
mm
|
Inches
|
mm
|
Inches
|
mm
|
Inches
|
mm
|
lbs
|
kg
|
|
|
SKVA-10001
|
4.78
|
121.41
|
2.86
|
72.64
|
7
|
177.8
|
0.05
|
1.27
|
0.27
|
6.73
|
0.5
|
12.7
|
16
|
2.9
|
1.3
|
|
SKVA-10002
|
12
|
304.8
|
2.9
|
1.3
|
|||||||||||
|
SKVA-10003
|
5.22
|
132.59
|
7
|
177.8
|
2.9
|
1.3
|
|||||||||
|
SKVA-10004
|
12
|
304.8
|
2.9
|
1.3
|
|||||||||||
|
SKVA-10005
|
7.87
|
199.90
|
2.86
|
72.64
|
7
|
177.8
|
0.05
|
1.27
|
0.34
|
8.51
|
0.5
|
12.7
|
20
|
4.1
|
1.9
|
|
SKVA-10006
|
12
|
304.8
|
7.1
|
3.2
|
|||||||||||
|
SKVA-10007
|
5.22
|
132.59
|
7
|
177.8
|
5.7
|
2.6
|
|||||||||
|
SKVA-10008
|
12
|
304.8
|
9.8
|
4.5
|
|||||||||||
|
SKVA-10009
|
10.78
|
273.81
|
2.86
|
72.64
|
7
|
177.8
|
0.05
|
1.27
|
0.32
|
8.13
|
0.5
|
12.7
|
30
|
7.4
|
3.4
|
|
SKVA-10010
|
12
|
304.8
|
10.4
|
4.7
|
|||||||||||
|
SKVA-10011
|
5.22
|
132.59
|
7
|
177.8
|
9.5
|
4.3
|
|||||||||
|
SKVA-10012
|
12
|
304.8
|
14.6
|
6.6
|
|||||||||||
4.72" Wide Series
7.87" Wide Series
10.87" Wide Series
Forced Convection Optimized Products Series
- Designed for high airflow environments
- Fin geometry refined for minimal pressure drop and maximum forced convection efficiency
- Electrical-grade, ultra-high thermal conductivity aluminum construction
- Fully customizable width and length
Forced Convection Part Number and Specifications Table
|
|
Width
|
Height
|
Flow
Length |
Fin
Thickness |
Fin
Spacing |
Base
Thickness |
Number
of Fins |
Weight
|
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Part Number
|
Inches
|
mm
|
Inches
|
mm
|
Inches
|
mm
|
Inches
|
mm
|
Inches
|
mm
|
Inches
|
mm
|
lbs
|
kg
|
|
|
SKVA-10013
|
4.78
|
121.41
|
2.86
|
72.64
|
7
|
177.8
|
0.05
|
1.27
|
0.19
|
4.83
|
0.5
|
12.7
|
20
|
3.2
|
1.5
|
|
SKVA-10014
|
12
|
304.8
|
5.6
|
2.5
|
|||||||||||
|
SKVA-10015
|
5.22
|
132.59
|
7
|
177.8
|
4.9
|
2.2
|
|||||||||
|
SKVA-10016
|
12
|
304.8
|
8.3
|
3.8
|
|||||||||||
|
SKVA-10017
|
7.87
|
199.90
|
2.86
|
72.64
|
7
|
177.8
|
0.05
|
1.27
|
0.20
|
5.08
|
0.5
|
12.7
|
30
|
4.9
|
2.2
|
|
SKVA-10018
|
12
|
304.8
|
8.5
|
3.8
|
|||||||||||
|
SKVA-10019
|
5.22
|
132.59
|
7
|
177.8
|
7.4
|
3.3
|
|||||||||
|
SKVA-10020
|
12
|
304.8
|
12.6
|
5.7
|
|||||||||||
|
SKVA-10021
|
10.78
|
273.81
|
2.86
|
72.64
|
7
|
177.8
|
0.05
|
1.27
|
0.32
|
8.13
|
0.5
|
12.7
|
45
|
7.3
|
3.3
|
|
SKVA-10022
|
12
|
304.8
|
12.5
|
5.7
|
|||||||||||
|
SKVA-10023
|
5.22
|
132.59
|
7
|
177.8
|
10.9
|
4.9
|
|||||||||
|
SKVA-10024
|
12
|
304.8
|
18.7
|
8.5
|
|||||||||||
4.72" Wide Series
7.87" Wide Series
10.87" Wide Series
Skived Power Fin Heatsink Fan Assembly Series
These Heatsinks are manufactured using Cofan’s Skived Fin Manufacturing Technology. This one-piece, integrated construction method ensures optimal thermal performance by maintaining a monolithic, seamless heat path between the heat source located on the thermal base and the heat-dissipating fins.
Forced Convection Standard Product Modular Series
- Integrated heatsink and fan modules for turnkey cooling
- CFD-optimized fin and fan matching for maximum performance
- Built from electrical-grade, high-thermal-conductivity aluminum alloy
- Modular, standard product configurations with custom machining available
Single Fan Series
Double Fan Series
|
|
|
|
″A″
|
″B″
|
″C″
Heatsink Length |
Total Heatsink
Surface Area |
Thermal
Resistance |
Weight
|
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Part Number*
|
Series Type
|
Fan Type
|
Inches
|
mm
|
Inches
|
mm
|
Inches
|
mm
|
Inches
|
mm
|
℃/W
|
lbs
|
kg
|
|
SKVA-10025
|
Single Fan
|
120mm, DC, Ball Bearing |
7.00
|
177.8
|
2.50
|
63.5
|
4.50
|
114.3
|
742.5
|
18,860
|
0.1
|
5.3
|
2.40
|
|
SKVA-10026
|
9.50
|
241.3
|
3.75
|
95.3
|
7.00
|
177.8
|
1,515.0
|
38,481
|
0.09
|
7.2
|
3.25
|
||
|
SKVA-10027
|
12.00
|
304.8
|
5.00
|
127.0
|
9.50
|
241.3
|
1,567.5
|
39,815
|
0.07
|
9.1
|
4.11
|
||
|
SKVA-10028
|
14.50
|
368.3
|
6.25
|
158.8
|
12.00
|
304.8
|
1,980.5
|
50,305
|
0.05
|
10.9
|
4.96
|
||
|
SKVA-10029
|
Double Fan
|
14.59
|
370.6
|
6.00
|
152.4
|
12.00
|
304.8
|
4,536.0
|
115,214
|
0.028
|
20.6
|
9.36
|
|
|
SKVA-10030
|
16.59
|
421.4
|
7.00
|
177.8
|
14.00
|
355.6
|
5,292.0
|
134,417
|
0.025
|
23.8
|
10.78
|
||
|
SKVA-10031
|
18.59
|
472.2
|
8.00
|
203.2
|
16.00
|
406.4
|
6,048.0
|
153,619
|
0.024
|
26.9
|
12.20
|
||
* Note:
1. Fans are ordered separately and not included in part number.
2. Cofan recommends fan part number: F-1225HH12B-R02 (25mm Fan Thickness, 12V, Duall Ball Bearing, 3200 RPM, No Connector; 2-Wire@4" Length)
3. Contact Factory for Tolerances and Dimensional Modifications or Customer Designs
Market Applications for Skived Fin Heatsinks
Computers & Electronic Components
- CPU. BGA, GPU & LGA’s professors
- Server cooling (Fan pack assemblies)
- Network routers
- Notebooks, memory products
LED Lighting
- Sports stadium illumination
- High bay & street lighting
- Automotive
- Phototherapy
- UVC Sterilization
- UVC Curling
- Horticulture
- Signs & displays (Architectural)
Telecommunications
- 5G base stations
- Antennas arrays
- Cabinet & enclosures
- 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
- 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)
- Metal core PCB’s
* Maybe Combined with Cofan’s Hybrid Heatsink Manufacturing Process - Friction Stir Welding to produce increased flow lengths and widths.
Special Features Options Integrated Into Skiving Process
- Screw/Bolt Head Countersink Reliefs
- Mounting Flanges
- Mounting/ Bracket Channels
Secondary CNC Machining Operations
- CNC Machining (Tapped Holes, Mounting Bosses, recessed Cavities, etc.)
- Rounded Edges for Safe Handling
Value Added Operations/ Capabilities
- Mounting Hardware (Plus Pins, Captive Screw Assemblies) Attachment Methods
- Thermal Interface Material
- Fan/ Heatsink Assemblies
- Integrated Heatpipes, Vapor Chambers and Liquid Cooling
- Sheet Metal Shrouds for Ducted Airflow
- Electromechanical Assembly
Finishing Operations
- Anodizing
- Plating (Chem Film, Nickel, Chrome, etc.)
Contact Manufacturing Services
- Electromechnical Assembly