Brazing Heat Sink | Brazed Fin Heat Sink

Brazing Heat Sinks: Ultimate Thermal Performance and Structural Integrity

Winshare provides high performance brazing heat sinks, providing excellent thermal management solutions for your demanding applications.

What is a brazing heat sink?

brazing heat sink is an advanced thermal management solution that connects the heat sink (fin) to the substrate through the brazing process. Unlike traditional mechanical connection or epoxy resin bonding, brazing uses filler metal (brazine) with a lower melting point than the parent material to fill the gap through capillary action without melting the parent material, forming a strong metallurgical bond.

This unique connection method ensures extremely low thermal resistance and excellent thermal conductivity, because heat can be transferred directly through the metal bond, avoiding interface thermal resistance. brazing heat sinks can achieve complex and high-density fin structures, maximize heat dissipation surface area, while maintaining excellent structural integrity and durability, and are ideal for high heat flux density and harsh environments.

Winshare Thermal Alloy specializes in the design and manufacture of high-performance bbrazing heat sinks, providing reliable and efficient heat dissipation solutions for your critical applications.

brazing Heat Sinks: Ultimate Thermal Performance and Structural Integrity

Excellent thermal performance

Through metallurgical bonding, extremely low interfacial thermal resistance is achieved, ensuring efficient heat conduction and greatly improving heat dissipation efficiency.

High structural strength

The strong connection formed by brazing makes the heat sink a whole unit with excellent resistance to vibration and shock.

Complex geometry

Enables high-density, high-aspect ratio fin designs and internal flow channels to optimize airflow and liquid cooling efficiency.

Lightweight design

Mainly made of aluminum alloy material, it effectively reduces product weight while ensuring heat dissipation performance and strength

Material compatibility

It can realize the connection of various metal materials, including aluminum and aluminum, copper and copper, and even copper and aluminum.

High reliability

No mechanical connection points reduce the risk of thermal failure due to looseness or poor contact, improving long-term reliability.

Brazing Heat Sink Applications & Case Studies

Brazed fin heat sink Brazing heat sink

Winshare Thermal Alloy's Advanced Brazing Technology

We use a variety of advanced brazing techniques to ensure the strongest, most thermally efficient connection for your heat sink. Each process has its own unique advantages and is suitable for different materials and design requirements.

Vacuum brazing

Vacuum brazing is a brazing process performed in a high vacuum environment. It does not require the use of flux, thus avoiding the impact of flux residue on product performance and cleanliness. High cleanliness: No flux residue, suitable for products with high cleanliness requirements. High connection strength: Forms a dense metallurgical bond with high joint strength. Complex structure: Suitable for radiators with complex internal structure that are difficult to clean. Materials: Mainly used for aluminum alloy, stainless steel, copper alloy, etc.

Controlled Atmosphere Brazing (CAB)

The CAB process is carried out in a controlled inert or reducing atmosphere, usually using non-corrosive flux. It is cost-effective and has high production efficiency. Cost-effectiveness: Lower equipment and operating costs compared to vacuum brazing. High production efficiency: suitable for large-scale continuous production. Wide application: Widely used in aluminum heat exchangers and radiators. Material: Mainly aluminum alloy.

brazing heat sink technical specifications and customization capabilities

Winshare Thermal Alloy provides standard and customized brazed heat sink solutions. We are able to precisely control material selection, dimensions, fin type and surface treatment to ensure optimal thermal performance based on your specific needs.

SPECIFICATIONS	DETAILED DESCRIPTION
Main material	Aluminum alloy (such as AL3003, AL6061, AL6063), copper, heterogeneous material combination (such as copper substrate + aluminum fin) tolerance Precision manufacturing tolerances to meet high industry standards
Brazing material type	Aluminum-silicon brazing alloys (such as 4047), copper-phosphorus brazing alloys, etc.
Brazing process	Vacuum Brazing, Controlled Atmosphere Brazing (CAB)
Fin Type	Folded Fins, Stamped Fins, Skived Fins, Extruded Fins
Maximum size	Customizable to meet the needs of large cooling modules (e.g. up to 1000mm long, 500mm wide, 200mm high)
Thermal resistance range	Depending on design and size, very low thermal resistance can be achieved
Surface treatment	Anodizing (black/transparent), chemical nickel plating, passivation, sandblasting, etc.
tolerance	Precision manufacturing tolerances to meet high industry standards

Our Customized Service Process

Custom Design and Optimization

Custom designs based on your heat loads, space constraints and airflow conditions.

Thermal simulation (CFD/FEA)

The strong connection formed by brazing makes the heat sink a whole unit with excellent resistance to vibration and shock.

Rapid Prototyping

Enables high-density, high-aspect ratio fin designs and internal flow channels to optimize airflow and liquid cooling efficiency.

Winshare Brazing Heat Sink Quality Assurance and Certification

Our commitment to product quality is the cornerstone of Winshare Thermal Alloy's success. All brazed heat sinks undergo a rigorous testing and quality control process to ensure they meet international standards and our customers' stringent requirements.

ISO 9001 Certification

We follow international quality management system standards to ensure the standardization and efficiency of the production process.
RoHS & REACH Compliance

All products comply with environmental directives, do not contain harmful substances, and protect user health and environmental safety.
Strict testing process

Including leakage testing, metallurgical bonding inspection, thermal performance testing, etc. to ensure product reliability.

Wide application of Winshare Thermal Alloy brazing heat sink

brazing heat sinks are ideal for high heat flux and harsh environments due to their superior thermal performance and structural integrity. They are widely used in the following key areas

High Power Electronics

Heat dissipation of IGBT modules, inverters, rectifiers, high-power power supplies, etc.

High Power LED Lighting

Heat dissipation for high-wattage LED lamps, stage lighting, outdoor lighting, etc.

New Energy Vehicles

Thermal management of battery cooling systems, motor controllers, on-board chargers, etc.

Aerospace & Defense

Airborne electronic equipment, radar systems, military communication equipment, etc.

Medical and Industrial Equipment

Large medical equipment such as MRI and CT, as well as high-precision industrial control systems.

Data Center and Server

High-performance server CPU/GPU heat dissipation and liquid cooling system components.

Why choose Winshare Brazing Heat Sinks?

Brazing expertise

Focusing on brazing technology, we have deep expertise and rich experience to ensure the best bonding quality.

Advanced brazing facilities

Equipped with modern vacuum brazing furnaces and CAB production lines to meet the needs of different scales and complexities.

Comprehensive thermal design capabilities

Provide a full range of thermal management solutions from conceptual design to CFD/FEA simulation and prototyping.

Strict quality control

ISO certification and strict testing procedures ensure that each brazed heat sink meets the highest standards.

Fast response and delivery

Efficient production management and supply chain ensure quick response to customer needs and on-time delivery.

Customized Solutions

From standard products to fully custom designs to meet the most unique and demanding cooling needs.

Common Problems of Brazing Heat Sink

Q How do brazed heat sinks differ from traditional bonded or mechanically attached heat sinks?

A Brazing forms a strong connection through metallurgical bonding with extremely low thermal resistance and high thermal conductivity. Its structural strength and reliability far exceed those of traditional bonding (such as epoxy resin) or mechanical connections (such as screws and clips), which are prone to interface thermal resistance and looseness.
Q What materials can be connected by brazing heat sink? Can it connect dissimilar materials?

A Brazing can connect a variety of similar or dissimilar metal materials, such as aluminum to aluminum, copper to copper, stainless steel to stainless steel, and critical copper to aluminum dissimilar material connections, which is very useful in applications that require a balance between thermal conductivity and cost.
Q What is the difference between vacuum brazing and controlled atmosphere brazing (CAB)?

A Vacuum brazing is performed under a high vacuum environment, without flux, and has a high degree of product cleanliness, suitable for precision applications that are sensitive to residues. CAB is performed in a controlled atmosphere (such as nitrogen), usually requires non-corrosive flux, is cost-effective, and is suitable for large-volume aluminum heat sink production.
Q Can the brazing heat sink be customized? What information do I need to provide?

A Yes, we offer comprehensive customization services. You will need to provide heat load requirements, available space limitations, airflow conditions, target temperature, application type, preferred materials, expected production batches, and any existing design drawings or concept sketches.
Q What is the typical delivery time for brazed heat sinks?

A The delivery time depends on the complexity of the design, material procurement cycle and production batch. You can contact us and we will give you the exact time according to the plan.

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What is a brazing heat sink?

brazing Heat Sinks: Ultimate Thermal Performance and Structural Integrity

Excellent thermal performance

High structural strength

Complex geometry

Lightweight design

Material compatibility

High reliability

Brazing Heat Sink Applications & Case Studies

Winshare Thermal Alloy's Advanced Brazing Technology

brazing heat sink technical specifications and customization capabilities

Our Customized Service Process

Custom Design and Optimization

Thermal simulation (CFD/FEA)

Rapid Prototyping

Winshare Brazing Heat Sink Quality Assurance and Certification

ISO 9001 Certification

RoHS & REACH Compliance

Strict testing process

Wide application of Winshare Thermal Alloy brazing heat sink

High Power Electronics

High Power LED Lighting

New Energy Vehicles

Aerospace & Defense

Medical and Industrial Equipment

Data Center and Server

Why choose Winshare Brazing Heat Sinks?

Common Problems of Brazing Heat Sink

Q How do brazed heat sinks differ from traditional bonded or mechanically attached heat sinks?

Q What materials can be connected by brazing heat sink? Can it connect dissimilar materials?

Q What is the difference between vacuum brazing and controlled atmosphere brazing (CAB)?

Q Can the brazing heat sink be customized? What information do I need to provide?

Q What is the typical delivery time for brazed heat sinks?

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