Place of Origin: Guangdong, China
Material: Beryllium Oxide Ceramic (BeO / Beryllia Ceramic), selected for applications that require high thermal conductivity, electrical insulation, and stable performance in compact ring-shaped assemblies.
Functional Features: High thermal conductivity, excellent electrical insulation, low dielectric loss, good dimensional stability, high-temperature resistance, and reliable performance in heat-sensitive electronic and vacuum environments. Finished BeO ceramic parts are stable in normal use, while dust-generating machining or grinding should be handled under proper safety control.
Application Industries: High-power electronics, RF and microwave devices, vacuum electronic components, power modules, laser systems, aerospace electronics, and semiconductor ceramic parts requiring thermal management and electrical isolation.
Delivery Time: Delivery depends on drawing complexity, material grade, dimensional tolerance, and inspection requirements. CERAMPRO supports custom BeO ring production from material selection, forming, sintering to precision ceramic machining and final inspection.
A Beryllium Oxide Ceramic Ring, also called a BeO Ring or Beryllia Ceramic Ring, is a precision annular component made from high-purity beryllium oxide ceramic. It is used in high-power electronics, RF and microwave devices, vacuum electronic assemblies, and thermal management systems where fast heat dissipation, stable electrical insulation, and reliable dielectric performance are required.
This product is made from Beryllium Oxide Ceramic, a high-performance technical ceramic valued for its rare combination of high thermal conductivity and electrical insulation. BeO is often selected for applications where heat needs to be transferred away quickly while the component must still work as an insulating barrier.
Compared with standard insulating ceramics, BeO provides much better thermal performance in compact electronic structures. This makes it suitable for RF chips, microwave assemblies, power modules, vacuum electronics, and other systems where heat build-up can affect reliability or signal stability.
| Parameter | Technical Indicator | Functional Significance |
|---|---|---|
| Material Purity | ≥ 99.5% BeO | Supports high thermal conductivity and stable dielectric performance. |
| Thermal Conductivity | 260–300 W/(m·K) | Rapidly dissipates heat from electrodes, RF chips, and compact power devices. |
| Dielectric Strength | ≥ 15 kV/mm | Helps prevent arcing in high-voltage power supplies and insulating structures. |
| Dielectric Constant | 6.5–6.8 at 1 MHz | Provides low capacitance and stable electrical performance for RF and high-frequency applications. |
| Dielectric Loss | ≤ 4 × 10⁻⁴ at 1 MHz | Reduces signal loss, energy absorption, and heat generation in the ceramic ring. |
| Volume Resistivity | > 10¹⁴ Ω·cm | Maintains electrical insulation even in demanding thermal environments. |
| Thermal Expansion | 7.5–9.0 × 10⁻⁶/K | Compatible with copper, Kovar, and other materials used in brazed assemblies. |
| Density | 2.85–2.90 g/cm³ | Provides a lightweight ceramic solution compared with alumina in certain assemblies. |
| Material | Main Strength | Limitation | Recommended Use |
|---|---|---|---|
| Beryllium Oxide Ceramic | Very high thermal conductivity with electrical insulation | Dust-generating processes require controlled safety handling | RF chips, microwave devices, power electronics, vacuum electronics, and thermal management rings |
| Alumina Ceramic | Cost-effective insulation and good mechanical strength | Much lower thermal conductivity than BeO | General insulating rings, spacers, structural ceramic parts, and wear components |
| Aluminum Nitride Ceramic | Good thermal conductivity and electrical insulation | More sensitive to processing and application conditions than alumina | Electronic substrates, heat spreaders, semiconductor packages, and power modules |
| Zirconia Ceramic | High toughness and wear resistance | Not mainly selected for heat dissipation | Wear rings, sleeves, shafts, mechanical support parts, and precision structural components |
A Beryllium Oxide Ceramic Ring is a precision annular ceramic component made from high-purity BeO ceramic. It is used when a part needs both electrical insulation and fast heat dissipation.
BeO rings are mainly used in high-power electronics, RF and microwave devices, vacuum electronic assemblies, electrodes, laser systems, semiconductor equipment, and thermal management structures.
Alumina is suitable for general insulation, but BeO is preferred when the application requires much higher thermal conductivity while still keeping the component electrically insulating.
Yes. BeO ceramic is an electrically insulating material with high dielectric strength and high volume resistivity, making it suitable for high-voltage and heat-sensitive applications.
Yes. BeO ceramic rings can be customized according to customer drawings or samples, including outer diameter, inner diameter, thickness, groove, step, chamfer, flatness, concentricity, and surface finish.
Please provide drawings, dimensions, tolerance requirements, material grade, quantity, application environment, and any special inspection or packaging requirements.
Yes. BeO ceramic is suitable for RF and microwave applications because it combines high thermal conductivity, electrical insulation, low dielectric constant, and low dielectric loss.
Finished BeO ceramic parts are stable under normal use. However, machining, grinding, crushing, or any process that creates dust should be handled with proper safety procedures.
Yes. CERAMPRO supports prototype samples, small-batch production, and custom OEM projects based on customer drawings or samples.
Delivery time depends on material grade, part size, drawing complexity, tolerance requirements, machining difficulty, quantity, and inspection standards.
