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Aluminium Oxide Al2O3 Substrates

The materials aluminium oxide Rubalit® and aluminium nitride Alunit® developed by CeramTec have established themselves worldwide as standard materials for electronic circuit carriers and are a byword for quality among all renowned manufacturers of hybrid circuits.

They convince with an excellent cost/performance ratio as well as their good thermal conductivity. They are used in industry, vehicle electrification and renewable energies.

Overview of CeramTec substrates in 2024

Substrates made of Rubalit® Aluminium Oxide Ceramics

Rubalit® 708 S with 96% Al2O3

This ceramic material is characterized by its extremely high strength and thermal conductivity. The outstanding surface quality on both sides makes it the perfect companion for any commercial thick film paste and even makes it suitable for a number of thin film applications (sputtering).

Rubalit® 710 with 99.6% Al2O3

With its extremely fine surface quality, this ceramic material is designed especially to meet the highest demands in thin-film technology.

Rubalit® 708 HP – High Performance with 96% Al2O3

Rubalit® 708 HP offers consistently reliable and convincing performance even when subject to high thermal and electrical loads in terms of its:

  • Thermocycling capability
  • Thermal shock resistance
  • Flexural strength
  • Surface quality
  • Thermal conductivity

This makes Rubalit® 708 HP ideal for power electronics in conjunction with direct copper bonding (DCB).

Aluminum Oxide (Al2O3) - Discover more information & examples of use

CeramTec Substrates in Comparison

MaterialFlexural strength
Thermal conductivity
Dielectric strength
Al2O34506 - 92215
AlN4504 - 617015
ZTA6257 - 92625
Si3N47002 - 48025