Conductivity™ Heat Spreaders

Heat spreaders are used to efficiently remove heat from electronic and optoelectronic components,  thereby increasing their lifetime and improving their performance. CiDRA® Precision Services, LLC manufactures Conductivity™ heat spreaders from advanced technical ceramic materials for applications requiring the utmost performance.    Specializing in Aluminum Nitride, Silicon Nitride and Pyrolytic Graphite, we offer simple and complex devices  with micron precision dimensional control and submicron Ra surface finish in plain or metalized formats.

Features

  • Aluminum Nitride, Silicon Carbide, and Pyrolytic Graphite
  • Custom Thicknesses
  • Custom Size, Holes, Cut-outs, and Other Features
  • Micron Precision Dimensional Tolerances
  • High Thermal Conductivity Ceramics
  • Low Thermal Expansion
  • High Volume Resistivity
  • RoHS Compatible
  • Prototype-to-Volume Production

Applications

  • Diode Lasers
  • Bar Lasers
  • Laser Diode Arrays
  • LEDs
  • High Power Electronics

Aluminum Nitride:  High thermal conductivity Aluminum Nitride is  an excellent choice for heat spreaders primarily because of its high thermal conductivity and volume resistivity, and because its thermal expansion is close to many important electronic and optoelectronic materials.   Devices can be soldered to Aluminum Nitride heat spreaders via a copper or nickel metallization layer or bonded with thermally conductive epoxy.  Regardless of the design, Aluminum Nitride offers a RoHS compliant alternative to Beryllium Oxide.

Pyrolytic Graphite PYROID HT:  High thermal conductivity Pyrolytic Graphite PYROID HT is fabricated using chemical vapor deposition (CVD), which leads to both very high purity and extremely anisotropic material properties.  At 1700 W/mK, this material has the highest in-plane thermal conductivity of any ceramic (4x of copper) while maintaining low thermal conductivity through the thickness.  With thermal performance rivaling CVD diamond but at a much more attractive cost, Pyrolytic Graphite PYROID HT is ideal for two and three dimensional thermal spreader applications requiring superior thermal performance. 

Silicon Nitride:  High thermal conductivity Silicon Nitride is a high-temperature, structural ceramic used where heat resistance, hardness, and strength are a premium.  With a 90W/mK thermal conductivity, Silicon Nitride may not appear to offer competitive thermal management performance.  However, superior stiffness, hardness and strength, enables very thin heat spreaders, which translates to efficient thermal management.  As a result, Silicon Nitride is ideal for electronic packages intended for use in highly aggressive thermomechnical environments.