Soldering Heat Sink Assemblies for High-Power Electronics
We design and manufacture custom soldering heat sink assemblies and thermal modules in aluminum and copper—from thermal design and DFM to prototypes and mass production.
HeatsinkMaker is a China-based manufacturer specializing in custom heat sinks and cooling assemblies. We support engineering-driven OEMs that need reliable, repeatable soldered heat sinks and integrated thermal solutions for high-power electronics.
150,000
Soldered assemblies per month
2014
Custom thermal manufacturing experience
01
Custom assemblies
Soldered aluminum and copper heat sinks, fin arrays, heat pipe assemblies, and thermal modules.
02
Engineering support
Thermal design, DFM, prototyping, validation, and practical process selection.
03
Production scale
A scalable path from engineering prototypes and pilot runs through repeat mass production.
Thermal joining expertise
Why choose a soldered heat sink assembly?
Soldered assemblies efficiently combine multiple components into one thermal path, giving engineers flexibility to manage hotspots, interfaces, and production requirements.
Discuss your thermal pathIntegrate complex structures
Attach stamped, folded, or zipper fin stacks to solid bases and add manifolds, spreaders, or secondary cooling features.
Spread concentrated heat
Integrate copper heat pipes or vapor chambers to manage hotspot loads in compact high-power designs.
Join dissimilar materials
Combine copper fin arrays with aluminum bases and use nickel-plated interfaces where solderability requires it.
Reduce interface resistance
Create a low-resistance thermal interface while optimizing cost and manufacturability for repeat production.
Need more than air cooling? We also design and manufacture liquid cold plates using vacuum brazing, friction-stir welding, or embedded-tube construction, as well as complete custom thermal modules.
Manufacturing scope
One manufacturing partner for the complete thermal assembly
Our process range supports soldered heat sinks, brazed assemblies, precision bases, and complementary thermal components under one roof.
Joining and fin forming
- Soft soldering of copper and aluminum assemblies
- Brazing, including vacuum brazing
- Stamped, folded, zipper, and bonded fins
- Heat pipe integration and nickel plating
Materials
- Aluminum 1060, 6061, and 6063
- Copper C1100
- CNC-machined bases
- Skived, extruded, and cold-forged components
Secondary operations
- CNC milling, drilling, tapping, and turning
- Cutting and deburring
- Anodizing and hard anodizing
- Passivation, sandblasting, polishing, and cleaning
Inspection and testing
- Thermal resistance and performance validation
- Dimensional inspection and CMM
- 2D measurement
- Leak and pressure testing for liquid-cooled assemblies
Engineering before manufacturing
Design the thermal path around your real operating conditions
A soldering heat sink assembly performs only as well as the engineering behind it. We balance thermal performance, airflow, pressure drop, form factor, and cost with practical manufacturability.
Useful application data
Heat load, allowable temperature, ambient conditions, airflow, and available space help us recommend a manufacturable path to your targets.
Thermal solution development
Structure design, thermal simulation support, and heat-spreading strategy.
Mechanical design and DFM
Review mounting, tolerances, interfaces, and production constraints before tooling or fabrication.
Process selection
Compare soldering, brazing, or mechanical joining for thermal performance, joint integrity, and cost.
Prototype and validation
Iterative optimization, thermal resistance testing, and validation using AutoCAD, SolidWorks, and Creo support.
Production capability
Capacity and equipment built for repeatability
From precision machining to assembly and inspection, our production resources support prototypes through high-volume programs.
| Capability | Production capacity or equipment |
|---|---|
| Soldered aluminum and copper heat sinks | Up to 150,000 pcs/month |
| Skived fin heat sinks | Up to 50,000 pcs/month |
| Liquid cold plates | Up to 30,000 pcs/month |
| Precision machined parts | Up to 300,000 pcs/month |
| CNC machining centers | 50 sets; machine capability ±0.002–±0.008 mm |
| Soldering and forming | 3 soldering machines; 10 stamping presses from 30–200T |
| Finishing and assembly | 5 skiving machines, 8 assembly lines, ultrasonic cleaning and polishing lines |
| Advanced processes | Vacuum brazing and friction stir welding capability |
Assembly examples
Typical soldered heat sink solutions
- Copper fin stacks soldered to copper or aluminum bases.
- Zipper fin arrays soldered to CNC-machined bases.
- Heat pipe modules, including Ø8 mm heat pipes, soldered into fin and base structures.
- Mixed-material assemblies with nickel-plated interfaces for solderability.
- Soldered heat sinks combined with skived bases or extrusions.
- Hybrid modules with soldered fins and embedded-tube liquid sections.
Joining method guidance
Soldering or brazing?
Choose soldering when
- Operating temperatures and joint loads suit soft-solder alloys.
- Controlled thermal interfaces are needed without high-temperature distortion.
- Heat pipes and thin fins must be joined without damaging components.
Choose brazing when
- Higher joint strength or elevated operating temperatures are required.
- Hermeticity is needed for liquid cold plates or complex internal channels.
- Aluminum assemblies need large, seamless thermal interfaces.
We evaluate thermal performance, joint integrity, cost, and production scalability before recommending the joining method.
Markets served
Thermal solutions for demanding electronics
Our assemblies support high-power, high-density, and reliability-focused applications across industrial and technology markets.
Prototype to production
A clear path from concept to repeatable supply
Prototype
Build-to-print or early-stage design support for your thermal concept.
Validation
Thermal resistance testing, dimensional checks, and design iteration.
Pilot run
Confirm process capability, assembly repeatability, and quality requirements.
Mass production
Scale supply with cross-functional engineering and manufacturing support.
Build-to-print, OEM/ODM, and custom thermal solutions for global OEM programs.
Start your project
Send your RFQ for a soldering heat sink assembly
Email your drawing or project brief and our engineering team will respond with a DFM review and manufacturing proposal. If you do not have a drawing yet, send your thermal requirements and constraints for early-stage support.
Please include
- 2D drawing and/or 3D CAD file
- Heat load and heat source dimensions
- Maximum allowable component temperature
- Ambient temperature and airflow conditions
- Installation space and mounting constraints
- Target thermal resistance, if available
- Surface finish or plating requirements
- Annual volume and ramp plan
- Required lead time
- Special testing or compliance requirements
Request a technical review
Share your requirements with HeatsinkMaker for a practical route to production.
Why HeatsinkMaker
Custom thermal solutions. Built for production.
- Multi-process manufacturing under one roof
- Engineering-first design and DFM support
- Prototype to high-volume production
- Global OEM experience for demanding applications