Ceramic Feedthroughs
Metallized Ceramics Component
SKU: FWM/MET-FT-001
- Material
- Metallized Ceramic Family
- Size
- Custom sizes available
- MOQ
- Pending Verification
- Applications
- Vacuum Equipment
Ceramic insulating feedthrough bodies and components for electrical, vacuum and hermetic assembly designs.
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Product Description
Ceramic insulating feedthrough bodies and components for electrical, vacuum and hermetic assembly designs.
Ceramic feedthroughs isolate an electrical conductor from a housing while supporting an application-specific sealed or brazed assembly. The ceramic body is one component of a feedthrough, not a complete hermetic assembly.
The ceramic body provides electrical separation at the housing penetration; its joining surfaces connect the insulating body to the surrounding metal assembly.
Product Features
- Electrical Isolation
- Ceramic-to-Metal Interface
- Hermetic Assembly Potential
- Custom Conductor Geometry
Typical Applications
- Vacuum Equipment — Electrical feedthrough and sensor assemblies: Supports an insulating passage through a controlled boundary.
- Sensors and Instrumentation — Connector and signal feedthrough assemblies: Provides ceramic isolation and joining surfaces after design review.
Product Geometry & Configuration
Alumina Typical Material Properties
| Property | 95% Al₂O₃ | 99% Al₂O₃ | 99.5% Al₂O₃ | 99.8% Al₂O₃ | Condition / basis |
|---|---|---|---|---|---|
| Density (g/cm³) | 3.65 | 3.85 | 3.90 | 3.92 | — |
| Fracture toughness (MPa·m½) | 3–4 | 3–4 | 4 | 4 | — |
| Young’s modulus (GPa) | 320 | 340 | 370 | 390 | — |
| Flexural strength (MPa) | 300 | 330 | 375 | 390 | 25°C |
| Compressive strength (MPa) | 2200 | 2350 | 2450 | 2500 | 25°C |
| Thermal conductivity (W/(m·K)) | 18–22 | 27 | 29 | 32 | 25°C |
| Linear thermal expansion coefficient (10⁻⁶/K) | 8 | 8 | 8 | 8 | 25–1000°C |
| Dielectric strength (kV/mm) | 16 | 20 | 22 | 22 | — |
| Volume resistivity (Ω·cm) | 10¹⁴ | 10¹⁴ | 10¹⁴ | 10¹⁴ | 25°C |
| Relative permittivity | 9 | 9.7 | 9.7 | 9.8 | 1MHz, 25°C |
| Dielectric loss | 0.0004 | 0.0002 | 0.0002 | 0.0001 | 1MHz, 25°C |
| Vickers hardness (HV) | >1300 | 1700 | 1750 | 1800 | — |
| Material thermal-shock temperature difference, ΔT (°C) | 220 | 180–200 | 180–200 | 180–200 | — |
| Typical maximum material temperature (°C) | 1500 | 1650 | 1700 | 1700 | — |
AlN (AN216A) Typical Properties
| Property | AN216A typical value | Condition / method |
|---|---|---|
| Density | 3.4 g/cm³ | JIS R 1634 |
| Water absorption | 0 % | JIS C 2141 |
| Vickers hardness | 10.4 GPa | HV9.807N (9.807 N load); JIS R 1610 |
| Three-point flexural strength | 310 MPa | Three-point bending; JIS R 1601 |
| Young’s modulus | 320 GPa | JIS R 1602 |
| Poisson’s ratio | 0.24 | JIS R 1602 |
| Fracture toughness (SEPB) | 3.2 MPa·m½ | SEPB; JIS R 1607 |
| Linear thermal expansion, 40–400°C | 4.6 × 10⁻⁶/K | 40–400°C; JIS R 1618 |
| Linear thermal expansion, 40–800°C | 5.3 × 10⁻⁶/K | 40–800°C; JIS R 1618 |
| Thermal conductivity | 150 W/(m·K) | 20°C; JIS R 1611 |
| Specific heat capacity | 0.71 J/(g·K) | JIS R 1611 |
| Material thermal-shock temperature difference | 250 °C | Water immersion; relative method; JIS R 1648 |
| Dielectric strength | 14 kV/mm | JIS C 2141 |
| Volume resistivity, 20°C | >10¹⁴ Ω·cm | 20°C; JIS C 2141 |
| Volume resistivity, 300°C | 10¹⁰ Ω·cm | 300°C; JIS C 2141 |
| Volume resistivity, 500°C | 10⁸ Ω·cm | 500°C; JIS C 2141 |
| Relative permittivity | 8.6 | 1 MHz; JIS C 2141 |
| Dielectric loss tangent | 0.0003 | 1 MHz; JIS C 2141 |
Product Geometry & Configuration
| Product parameter | Configuration | Basis |
|---|---|---|
| Material system | Metallized Ceramic Family | Material family; grade selected for the application |
| Component forms | Single-channel ceramic bodies; Multi-channel feedthrough bodies; Custom flanged or tubular components | Drawing-defined configurations |
| Geometry and dimensions | Custom sizes available | Part drawing and mating interfaces |
| Functional surfaces | Contact, locating, joining or insulating surfaces as applicable | Surface finish and acceptance criteria on the drawing |
Available Forms
Representative forms are shown for selection. Final geometry, material route, interface, finish and acceptance criteria require drawing review.
- Single-channel ceramic bodies
- Multi-channel feedthrough bodies
- Custom flanged or tubular components
Packaging & Shipping
Packing and shipment arrangements are selected for the confirmed component geometry and surface requirements.
| Item | Details |
|---|---|
| Product protection | Selected for geometry, surface condition and quantity |
| Other commercial terms and lead time | Confirmed in quotation |
| Source boundary | No competitor packaging or delivery promise is inherited. |
| Payment terms | T/T / Western Union / PayPal; 50% advance payment, 50% balance before shipment |
| Shipping methods | Sea freight / Air freight / Door-to-door courier |
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