Specifications:
Note: Shalom EO offers substrates made from two different models (BEO99 and BEO99.5) of BeO Ceramics. The specifications of the two models are separately listed in the table below.
| Parameters/Models | BEO99 | BEO99.5 | |
| Volume Density | ≥2.85g/cm3 | ≥2.88g/cm3 | |
| Flexural Strength | ≥200Mpa | ≥200Mpa | |
| Average Coefficient of Expansion (at 25-500°C) | 7.0-8.0x10-6/K | 7.0-8.0x10-6/K | |
| Thermal Conductivity | at 25°C | ≥260W/m.K | ≥285W/m.K |
| at 100°C | ≥190W/m.K | 200W/m.K | |
| Dielectric Constants | at 1MHz | 6.7±0.2 | |
| at 10GHz | 6.9±0.2 | 6.8±0.2 | |
| Dielectric Loss Tangent | at 1MHz | ≤4x10-4 | ≤4x10-4 |
| at 10±0.5GHz | ≤6x10-4 | ≤4x10-4 | |
| Volume Resistivity | ≥1014 Ω.cm (at 20 °C) | ≥1014 Ω.cm (at 100 °C) | |
| Puncture Strength | ≥30kV/mm | ≥40kV/mm | |
| Thermal Shock Resistance | Excellent | Excellent | |
| Chemical Stability | 1:9 HCL | ≤0.1mg/cm2 | ≤0.1mg/cm2 |
| 10% NaOH | ≤0.1mg/cm2 | ≤0.1mg/cm2 | |
| Air Tightness | ≤5x10-12Pa.m3/s | ≤5x10-12Pa.m3/s | |
| Average Grain Size | 10-20μm | 10-20μm | |
Beryllium Oxide, or Beryllia, BeO Ceramics are a kind of high-performance fine ceramic material fabricated using BeO powders as the main composition.
Compared with other ceramic substrate materials, the most outstanding characteristic of BeO ceramic substrates is their unparalleled thermal induction properties. The thermal inductance of Beryllium Oxide ceramics is close to albeit ranked behind that of silver and red copper and outperforms alumina substrates to a significant extent.
Other advantages of Beryllium Oxide ceramics include high electrical resistance, substantial puncture strength, and low loss at high frequencies, low dielectric constants. The mechanical strength of BeO is also recommendable, with additional exceptional thermal shock resistance and chemical inertia.
Hangzhou Shalom EO offers Bare Beryllium Oxide Ceramic Substrates of various custom shapes and specifications, and special structures such as holes, manufactured using hot-press techniques, which allows us to obtain quick turnaround at competitive prices. Our Beryllium Oxide ceramic substrates feature high BeO purities and unrivaled thermal inductance, with the maximum reaching 280W/m.K. The uncoated bare substrates are appropriate for further thick film treatment to produce PCB substrates and for diverse applications like high-power, large-scale integrated circuits, electrical packages, TEC, HIC, PCB, aerospace, telecommunications, satellites, etc. Besides, we also offer metalized versions of BeO ceramic substrates.
Application Notes:
It's worth noting that although Beryllium Oxide ceramics have been notorious for being deemed to be toxic, it’s the soluble BeO power that’s toxic. Beryllium Oxide ceramics, however, having gone through high-temperature processing, are insoluble in common acids and alkalis, therefore are not as detrimental as believed under proper protection measures. Shalom EO's Beryllium Oxide ceramic substrates are all produced and tested in compliance with pertinent regulations.
