Customized Heatsink

Custom Thermal Solutions

Custom Heatsink Solutions

Engineered Thermal Solutions for High-Performance Electronics

As power densities continue to increase across AI computing, telecommunications, industrial power electronics, EV charging systems, energy storage equipment, and medical devices, thermal management has become a critical factor in system performance, reliability, and product lifetime

At Renxin Thermal Products, we specialize in the design, simulation, prototyping, and manufacturing of custom heatsink solutions tailored to the unique thermal requirements of each application

Custorm Thermal Solutions

TEC Cooling Systems

Rather than forcing customers to adapt their designs to standard heatsinks, we engineer thermal solutions specifically optimized for the electrical, mechanical, and environmental requirements of the final product

Whether the challenge involves a high-power semiconductor, an optical transceiver, an IGBT module, a power converter, or a compact embedded system, our engineering team develops thermal solutions that maximize heat dissipation, improve temperature uniformity, and enhance long-term reliability

Why Choose a Custom Heatsink?

No two electronic systems generate heat in exactly the same way.

Factors such as:

Power dissipation
Heat source geometry
Airflow conditions
Ambient temperature
Mechanical constraints
Reliability targets

all influence the optimal thermal solution.

A custom heatsink allows thermal performance to be optimized around the application rather than compromising performance with an off-the-shelf solution.

Application-specific heatsink design for optimized thermal performance

Lower junction temperatures

Improved system reliability

Increased product lifetime

Reduced fan power consumption

Compact mechanical integration

Optimized manufacturing cost

CFD Thermal Simulation

Thermal Engineering Driven Design

Every custom heatsink project begins with a detailed thermal and mechanical evaluation

Mechanical Parameters

Available installation envelope
Length, width and height limitations
Mounting method
Weight restrictions

Thermal Parameters

Heat source dimensions
Total power dissipation (Watts)
Junction temperature limits
Case temperature requirements
Ambient operating temperature

Airflow Conditions

Air velocity (LFM or m/s)
Airflow direction
Natural or forced convection

Interface Conditions

TIM selection
Contact pressure requirements
Surface flatness requirements

Our engineers utilize advanced simulation tools including:

ANSYS Icepak
SolidWorks Flow Simulation
CFD Thermal Analysis

to validate thermal performance before prototype manufacturing.

Manufacturing Technologies

Custom Heatsink Manufacturing Technologies

Renxin offers a complete portfolio of thermal manufacturing technologies, allowing us to select the most cost-effective and thermally efficient solution for each project

Heat pipe heatsinks for rapid heat transfer from localized heat sources

Heat Pipe Heatsinks

Heat pipes rapidly transfer heat away from localized heat sources through phase-change technology.

Applications:

CPUs
GPUs
AI accelerators
Power electronics

Vapor Chamber Heatsinks

Vapor chambers provide superior heat spreading performance and temperature uniformity.

Advantages:

Eliminate hot spots
Improve thermal spreading resistance
Ideal for high heat flux devices

Applications:

AI Servers
Optical Transceivers
High-performance Computing
Telecom Equipment

Vapor chamber heatsinks for heat spreading and temperature uniformity

CNC machined heatsinks

Machined Heatsinks

CNC machined heatsinks provide maximum design flexibility and fast prototype turnaround.

Advantages:

No tooling investment
Tight tolerances
Complex geometries
Rapid development

Ideal for:

Engineering prototypes
Low-volume production
Thermal validation testing

Extruded Heatsinks

The most economical solution for medium to high-volume production.

Advantages:

Low tooling cost
Excellent thermal performance
Fast production cycles

Materials:

Aluminum 6063
Aluminum 6061

Extruded heatsinks

Skived fin heatsinks

Skived Fin Heatsinks

Skiving technology creates high-density fins directly from a solid copper or aluminum block.

Advantages:

Extremely high fin density
Low thermal resistance
No fin-to-base interface resistance

Applications:

AI Servers
Datacenter Equipment
Power Electronics

Forged Heatsinks

Forged heatsinks enable high aspect ratio fins and superior material density.

Advantages:

High mechanical strength
Excellent thermal conductivity
High fin density

Materials:

Copper C1100
Aluminum 6063

Forged heatsinks

Die-cast heatsinks for high-volume production and complex geometries

Die-Cast Heatsinks

Ideal for high-volume production with complex geometries.

Advantages:

Near-net-shape manufacturing
Reduced machining
Low piece-part cost

Typical production volumes:

5,000+ units annually

Stamped Fin Heatsinks

A cost-effective solution for medium and high-volume applications requiring lightweight thermal assemblies

Stamped fin heatsinks and Clip

Prototype to Production

Integrated workflow from thermal requirement definition to mass production

Thermal Requirement Definition
CFD Simulation & Design Optimization
Engineering Prototype Manufacturing
Thermal Validation Testing
DFM Optimization
Pilot Production
Mass Production

This integrated workflow significantly reduces development risk and accelerates time-to-market

Rapid prototyping capability for fast thermal validation during product development

Rapid Prototyping Capability

Fast thermal validation is critical during product development.

Renxin offers:

CNC Prototype Manufacturing
Vapor Chamber Prototypes
Heat Pipe Assemblies
Soft Tooling Solutions
Low-Volume Pilot Production

Typical prototype lead times:

CNC Heatsinks: 1–2 weeks
Heat Pipe Assemblies: 2–3 weeks
Vapor Chamber Solutions: 2–4 weeks

Industry Applications

Custom heatsink solutions for AI, datacenters, optical transceivers, EV charging and industrial electronics

AI Servers

Datacenters

Optical Transceivers

EV Charging Systems

Energy Storage Systems

Photovoltaic Inverters

Industrial Power Supplies

IGBT Modules

Medical Equipment

Telecommunications Infrastructure

Industrial Automation

Marine Electronics

Your Thermal Design Partner

From concept development and thermal simulation to prototype validation and mass production, Renxin Thermal Products delivers engineered thermal solutions that improve performance, reduce risk, and accelerate product development.

Our mission is simple:

To provide the most effective, manufacturable, and cost-efficient thermal solution for every application.

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