Embedded heat pipe heat sink from Miba

Targeted cooling of hotspots without a pump or additional components

 

Localized hotspots beneath SiC, GaN, MOSFET, IGCT or IGBT devices limit power handling and service life. Embedded heat pipes heat sinks passively solve this problem.

 

They are integrated directly into the heat sink and transfer heat from the hotspot to cooler areas without requiring external energy or moving parts.

 

Miba Cooling

  • manufactures according to your drawings (build-to-print) or
  • works with you to develop the right thermal solution (build-to-spec).

Icon heat dissipation
Hotspot reduction directly within the component

Embedded heat pipes are integrated directly into the heat sink. Heat is quickly distributed from local hot spots to larger areas.

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Passive operation without maintenance

No electricity, no pump, no moving parts. The system operates in a closed loop and requires no maintenance.

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From design to production

Miba supports you with CFD simulations, in-house validation tests, and an end-to-end process chain at its own facility.

In these situations, embedded heat pipes heat sink can be helpful

 

  • Local hotspots under SiC or IGBT devices: Temperature spikes limit the performance and service life of the components.
  • Uneven temperature distribution: Temperature gradients within the component generate mechanical stresses and accelerate aging.
  • System complexity: Air cooling is no longer sufficient. Liquid cooling is costly, as leaks, pumps, piping, and maintenance increase both costs and complexity.
  • Acoustics, vibration and durability: Fans and pumps generate noise and vibration. The industrial, mobility, and aerospace sectors require passive, durable cooling solutions without active components.

Tell us about your use case.

Florian Feiertag

We'll determine which embedded heat pipe heat sink solution is right for your system.

Request a consultation now!

Technical specifications and features


Miba's embedded heat pipes heat sinks are based on proven materials and are precisely engineered to meet your requirements during the design phase.

Materials and structure

Embedded heat pipe heat sinks consist of an aluminum or copper tube with a vacuum-sealed, capillary internal system. Heat is transferred through evaporation and condensation.

Working fluid

High-purity water or alcohol, depending on the operating temperature.

 

Geometric Options

Embedded heat pipe heat sinks are available in round, curved or flat configurations, depending on the requirements of the system environment.

Sizing

The size and quantity are determined during the design phase based on specific requirements.

The benefits of Miba's embedded heat pipe heat sinks

 

Miba supports you with an end-to-end process chain at its own facility, from machining to validation.

 

  • Embedding significantly increases the effective thermal conductivity of the base heat sink and helps distribute hot spots.
  • Improved heat distribution allows for smaller or lighter cooling solutions, even in confined spaces.
  • Within certain limits, embedded heat pipe heat sinks can be adapted to existing geometries.
  • CFD simulation and testing thoroughly validate the solution.

Applications for embedded heat pipe heat sinks


Embedded heat pipe heat sinks support hotspot management through passive two-phase heat transfer with high effective thermal conductivity in the following applications:

Product photo IGBT with heat sink
Power Electronics (IGBT, SiC and GaN)

Increasing demands in SiC applications require targeted hotspot management. Embedded heat pipes transport heat from the hotspot to areas where a larger heat sink can effectively dissipate it.

Industrial pump
Applications without liquid cooling

Where sealing, pumps and tubing are not an option, embedded heat pipe heat sinks provide passive cooling without the need for additional infrastructure.

Telescope
Medical, Aerospace and Defense

They operate without an external power source or moving parts. As a result, they are particularly well-suited for applications that demand high reliability, passive operation and low weight.

Embedded heat pipe heat sinks: an overview of other products


From individual heat pipe heat sinks to complex thermal assemblies

Product picture heat pipe
Heatpipe

Heat pipe heat sinks fill the gap when air cooling is no longer sufficient and liquid cooling is not an option. They are maintenance-free and passive.

 

Heat pipes

Product picture heatpipe cooling tower
Heat Pipe Cooling Tower

The heat pipe cooling tower is a vertically designed, passive cooling system for SiC, GaN, MOSFET and IGBT modules.

Heat Pipe Cooling Tower

Product picture heat pipe systems
Heat Pipe Assemblies

Heat pipe assemblies are fully pre-assembled cooling units. They transfer heat without the use of active components.

Heat Pipe Assemblies

Frequently Asked Questions about embedded heat pipe heat sinks

Embedded heat pipe heat sinks are passive heat transfer elements that are integrated directly into a component, such as heat sinks, base plates or structural components.

They absorb heat locally at hotspots and efficiently transfer it to cooler areas through phase-change processes, entirely without pumps, external power sources or moving parts.

Embedded heat pipe heat sinks are based on the two-phase heat transfer principle.

  • Inside, a working fluid evaporates in the high-temperature zone (hotspot).
  • The resulting vapor flows into cooler zones, condenses there, and releases its latent heat.
  • The condensed fluid is then returned to the evaporation zone via a capillary structure (wick structure).


By integrating it into the component, this highly effective heat transfer is achieved directly at the thermal hotspots. This is particularly effective where purely conductive heat paths reach their physical limits.

If the overall cooling capacity is generally sufficient but local hotspots are limiting efficiency, embedded heat pipe heat sinks are the right solution.

They make better use of the existing cooling surface without increasing the size of the overall system.

  • Hotspot management: Heat is quickly distributed from localized hotspots to larger areas.
  • Temperature homogenization: Temperature gradients within the component decrease, resulting in a more uniform temperature distribution.
  • Passive operation: No external power, noise or maintenance required due to moving parts.
  • Integration and installation space: Thermal functionality is integrated into existing structures without the need for additional assemblies.

Embedded heat pipe heat sinks enable directed heat transfer between localized heat sources and cooler areas. Vapor chambers, on the other hand, distribute heat evenly across a surface and ensure a particularly uniform temperature distribution.

Typical areas of application include systems with high power dissipation and locally concentrated hotspots, such as in power electronics, medical technology and aerospace and defense applications.

Contact us now!