Heat Sink Services

Heat Sink Design

Use application data to power Excel-based design options.

CFD Optimization

Create & refine heat sink models to balance SWaP-C variables.

Proto & Mass Production

Final validation before full-scale heat sink manufacturing.

Development Steps & Timeline

Corporate Strengths


Significant 2-Phase Heat Sink Experience

  • • Thousands of solutions analyzed, modeled, & manufactured
  • • 97% of custom heat sinks are 2-phase designs
  • • 30+ issued and active patents

Collaborative Design Philosophy

  • • High availability of engineering staff in multiple time-zones
  • • Two decades of SWaP-C heat sink optimization know-how
  • • Full support for Celsia or customer-driven CFD modeling

Benchmark Quality Systems

  • • Complete in-house control of critical heat sink components
  • • Raw material purity and oxygen content validated by Celsia
  • • 100% testing of every production part

Agile Heat Sink Organization

Streamlined for fast turnaround of 100's of unique custom heat sinks for small-mid size orders with unmatched flexibility and speed


Significant 2-Phase Heat Sink Experience

  • • Thousands of solutions analyzed, modeled, & manufactured
  • • 97% of custom heat sinks are 2-phase designs
  • • 30+ issued and active patents

Collaborative Design Philosophy

  • • High availability of engineering staff in multiple time-zones
  • • Two decades of SWaP-C heat sink optimization know-how
  • • Full support for Celsia or customer-driven CFD modeling

Benchmark Quality Systems

  • • Complete in-house control of critical heat sink components
  • • Raw material purity and oxygen content validated by Celsia
  • • 100% testing of every production part

Agile Heat Sink Organization

Streamlined for fast turnaround of 100’s of unique custom heat sinks for small-mid size orders with unmatched flexibility and speed

Celsia Core Competence

Custom Heat Sink Technologies

Customizable Heat Pipes

Application-tuned wall thickness, wick thickness, porosity, permeability, & fluid loading.

Heat Pipe Design Guide

1-Piece Vapor Chambers​

Lower-cost devices allow Z-axis bending in dimensions up to 109mm wide & 5mm thick

Vapor Chamber Technology

2-Piece Vapor Chambers​

Stamped into any shape along the XY axes & allow for embossments, thru-holes, & variable wicks.

Vapor Chamber Design Guide

Specialty Two-Phase​

Machined vapor chambers attach to multiple heat sources while methanol heat pipes extend range.

Specialty Two-Phase Designs

Phase Change Material​

Manage substantial transient spikes to ambient temperature or device thermal load.

PCM Technology

Thermal Straps​

Solves excessive shock & vibe or thermal expansion issues between heat source & condenser.

Thermal Strap Technology

Heat Sink Thermal Resources

Heat Sink Blogs

In-depth technical information:

Design Guides
Thermal Concept Explanations
Cost/Performance Comparison
All Blogs

Fast Tech Tips

Under 2-minutes on specific thermal management topics:
What’s a Thermal Budget
Heat Pipe Mounting Options
All Tech Tips

Thermal Calculators

Start planning your project:

Heat Sink Size
Heat Pipe Selection
Heat Sink Performance.
All Calculators

Custom Manufactured Two-Phase Heat Sinks

Extruded Heat Sink

Cost-effective design for natural convection applications

Zipper Fin Heat Sink

Allows very high fin density for forced convection solutions

Machined Heat Sink

Offers the most design flexibility for low volume production

Skived Heat Sink

Excellent thermal properties & high aspect ratio possibilities

Full Heat Sink Assemblies

Provided with attached fans, TIM, and mounting hardware

Heat Sink Oddities

Designs using 3D vapor chambers or square heat pipes