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Folded fin heat sink assembly
- Space-Saving Thermal Efficiency: Folded-fin design dramatically increases surface area within tight form factors-ideal for compact electronics where traditional die-cast sinks would be impractical.
- Superior Heat Dissipation: The dense network of folded fins enables more efficient heat removal per volume compared to extruded or die-cast models.
- Lightweight & Cost-Effective: Manufactured from aluminum (or copper), folded fin assemblies offer excellent thermal performance with lower weight and production cost.
- Customizable Assembly Options: Fins can be bonded via soldering or thermal epoxy to aluminum or copper bases, and heat pipes can be included when needed.
- Versatile for Multiple Industries: Widely used in thermal-critical devices such as medical equipment, power converters, PCBs, CPUs, IGBTs, LED modules, and more.
- Rapid Prototype to Production: Supports samples in 1-2 weeks and mass production in 4-6 weeks, with no strict minimum order requirement-ideal for pilot runs and iterative development.
- Manufacturing Credentials: Produced in Sinda Thermal’s ISO 9001 and ISO 14001 certified facility in Dongguan, with stamping, CNC, and soldering capabilities for precise construction.
Folded fin heat sink assembly Product
Customization Capabilities
Our folded-fin heat sink assemblies are tailored to deliver efficient cooling and seamless integration across varied form factors and thermal demands.
- Fin Material: Aluminum or copper sheets folded to precision.
- Fin Attachment Methods: Soldering or thermal epoxy bonding to the base.
- Base Material: Aluminum or copper base-heat pipes optional for enhanced cooling.
- Geometry Flexibility: Customizable fin spacing, height, and configurations like lanced, offset, or wavy patterns.
- Application Integration: Engineered for compact boards, high-density modules, and PCBs with restricted space.
- Surface Finish: Options include passivation, nickel plating, or other protective coatings.
- Lead Time: Prototypes delivered within 1-2 weeks; full-scale production in 4-6 weeks.
- OEM/ODM Services: Tailored branding, dimensions, performance specs, and production scale are supported.
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Why Partner with Sinoextrud for Your Folded fin heat sink assembly Needs?
We are more than just an aluminum profile supplier — we’re your efficient, reliable, long-term partner.
With Us, You Get:Faster turnaround，Stable quality，Competitive pricing，End-to-end support.
Large-Scale Manufacturing：Our factory spans 1,000 mu (about 667,000 m²), with full in-house capabilities from aluminum smelting and billet casting to extrusion, surface treatment, and CNC machining.
One-Stop Solution：With 43 extrusion lines (500–5500 tons) and a dedicated mold partner, we provide fast production, custom profiles, and integrated services to simplify your supply chain.
Quality You Can Trust：Strict quality control ensures consistent dimensions, strength, and finish, reducing your risk and increasing reliability.
Fast Delivery & Cost Efficiency：Self-produced billets, in-house processing, and batch production mean faster lead times and lower overall costs.
Advanced Finishing Options：Anodizing and both vertical and horizontal powder coating lines deliver durable, high-quality surface finishes tailored to your product needs.
Factory Overview
Furnace workshop
Aluminum bar production
Mold Warehouse
500-5500 Tons Extruder
Spraying workshop
Anodizing workshop
Deep Processing Workshop
CNC Machining Workshop
Finished goods warehouse
Finished goods warehouse
Finished goods warehouse
Export warehouse
5500 Ton Extrusion Press
Aluminum extrusion press
Large Aluminum Extrusion Line
Aluminum extrusion production line
Extrusion workshop
IATF 16949 Certification
TUV
Finished goods warehouse
Export warehouse
-Standard Packing Option-
* Long bar length profiles 3.0-6.0 meters*
Protective Film
Shrink Sleeve
Brown Paper
Craft Paper
* Short bar length profiles 0.3-3.0 meters*
EPE Foam
Poly Bag
Wooden Crate
Wooden Case
-Loading & Shipment-
Pallet Loading
Bulk Loading
LCL Loading
Expedited Express
STEPS
How to work with us
Sample & Test
Creating a prototype to assess dimensions and ensure the mold's precision aligns with the requirements.
Extrude & Finish
Producing the aluminum profile with pinpoint accuracy to the given specifications and applying desired finishes.
Pack & Deliver
Tailored packaging for the extruded profiles, ensuring safe and efficient loading for prompt delivery.
Folded fin heat sink assembly-FAQ's
What makes folded-fin heat sinks better than traditional ones?
Their ultra-compact, dense fin structure offers much higher surface area for heat dissipation in small spaces.
How are the fins bonded to the base?
Using soldering or high-thermal epoxy methods onto aluminum or copper bases for strong thermal pathways.
Can heat pipes be integrated?
Yes-when enhanced thermal management is needed, heat pipes can be added to the design.
Are these suitable for PCB attachment?
Absolutely-commonly used to cool compact electronics and thermal-critical PCB components.
What materials are available for fins and bases?
Aluminum or copper; base and fins can be mixed to optimize performance.
What are typical lead times?
Prototype availability in 1-2 weeks; mass production in 4-6 weeks.
Is there a minimum order quantity?
No-small prototype runs are available without MOQ restrictions.
Where are these heat sinks manufactured?
In Sinda Thermal’s ISO-certified factory in Dongguan, China, with advanced stamping and CNC equipment.
Are they RoHS/REACH compliant?
Yes-products meet RoHS/REACH environmental standards.
Can custom fin geometries like wavy or lanced surfaces be produced?
Yes-special configurations such as lanced, offset, or wavy fins are available to enhance thermal transfer.
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Sinoextrud: Your Folded fin heat sink assembly Manufacturer
Folded-fin heat sink assemblies offer a highly efficient thermal solution by maximizing surface area in a compact package. Their folded structure supports dense airflow and excellent heat dissipation-especially valuable where space is at a premium.
These assemblies are ideal for applications like high-performance CPUs, PCBs, LED modules, power converters, and medical electronics. They balance thermal performance with lightweight design and lower manufacturing cost.
Manufactured with precision techniques-combining stamping, CNC assembly, and soldering-in a quality-certified facility, these assembled sinks deliver dependable performance across mass and custom orders.
Rapid prototyping (1-2 weeks) and efficient mass production (4-6 weeks), with no minimum order requirement, enable agile design cycles and flexible deployment for global B2B partners.
Whether you require standard configurations or bespoke formats-adjusted fin geometry, materials, or integrated heat pipes-our OEM/ODM capabilities make folded-fin solutions both powerful and adaptable for your thermal design needs.