Metallization Spec.:
Molybdenum/Manganese (Mo/Mn) metallization: 9-30um
Ni plating thickness: 3-10um
Metallized Ceramic Insulators Material Properties:
| No | Item | Unit | Value |
| 1 | Purity | % | ≥95 |
| 2 | Volume density | g/cm3 | ≥3.6 |
| 3 | Water absorption | % | 0 |
| 4 | Thermal conductivity | W/m·K( 25℃) | 22.4 |
| 5 | Coefficient of thermal expansion | X(10-6)/℃ (20-1000℃) | 8.2 |
| 6 | Flexural strength | Mpa | 340 |
| 7 | Compressive strength | Mpa | 2103 |
| 8 | Tensile strength | Mpa | 193 |
| 9 | Hardness | ROCKWELL 45N | 78 |
| 10 | Withstand voltage | K Vac/mm | 8.3 |
| 11 | Dielectric constant | @1MHz | 9.1 |
| 12 | Dielectric loss angle | @1MHz | 0.0004 |
| 13 | Volume resistivity | @25℃ | 1x10-14 |
| @500℃ | 4x10-9 | ||
| @1000℃ | 5x105 |
Metallized Ceramic Insulators Features:
1. The ceramic material is with even texture, each batch has stability quality and flexural strength.
2. Metal layer is dense, constant, smooth and good weldability.
3. Excellent electrical insulation, low dielectric constant, good abrasion, and corrosion resistance.
4. High tensile strength, good airtightness to meet the requirement of the high-frequency, high-power and safe electrical components.
Metallized Ceramic Insulators Application:
Semiconductor packaging, TO packaging, Fiber optic device shell, Laser Shell, Vacuum electronic devices, LED accessories etcs.
Declaration: This is an original article of INNOVACERA®. Please indicate the source link when reprinting: https://www.innovacera.com/product/metallized-ceramic-insulators
Frequently Asked Questions
How does Mo/Mn metallization improve ceramic-to-metal brazing? What makes these insulators hermetically reliable?
Molybdenum-Manganese (Mo/Mn) metallization (9–30 μm) combined with nickel plating (3–10 μm) creates a dense, uniform, and solderable layer that bonds seamlessly to high-purity alumina (>95% Al2O3). This high-strength metallic layer ensures excellent wettability with braze alloys, creating a robust, vacuum-tight hermetic seal with high tensile strength (193 MPa) and superior dielectric isolation (8.3 kVac/mm) capable of enduring high-temperature vacuum cycles.
Can I buy custom metallized ceramic insulators for vacuum electronics? What specifications can the manufacturer tailor?
Yes, as an advanced metallized ceramics manufacturer, INNOVACERA produces custom-engineered insulators, feedthrough rings, and header packages tailored to your brazing requirements. We can customize substrate geometries, Mo/Mn and Ni/Au plating thicknesses, and braze alloy interfaces for semiconductor TO headers, vacuum interrupters, fiber optic modules, and high-voltage laser housings. Contact us for custom quotes and drawings evaluation.
