Product Material: High-Performance Alumina Ceramic (Al₂O₃ 96%-99.5%)
Material Characteristics:
High dielectric strength (>15 kV/mm), Excellent volume and surface resistivity (>10¹² Ω·cm), High mechanical and flexural strength (>300 MPa), Good heat resistance (long-term service temperature >500°C), Superior arc resistance and comparative tracking index (CTI > 600 V), Chemical inertness (resistant to acids, alkalis, solvents, and salt spray), Low and compatible coefficient of thermal expansion (7-8×10⁻⁶/°C), Surface capable of high-adhesion metallization (copper plating, nickel plating, silver plating).
Application Industries:
Optical communication equipment and optoelectronic systems, high-reliability laser equipment, power transmission and distribution systems, new energy vehicles (EV control systems and battery packs), semiconductor equipment, rail transit, aerospace electronic systems, petrochemical explosion-proof electrical equipment, renewable energy (solar and wind power), and advanced machinery equipment such as laser systems and industrial furnaces.
Processing Difficulties:
Molding and sintering control for complex internal wire channels and external mounting features; Machining high-precision threaded holes or slots while maintaining their mechanical strength; Achieving high-reliability bonding between ceramic body and metal inserts or metallization layers, capable of withstanding thermal cycling and mechanical stress; Preventing cracking in thin-walled areas during processing and use; Ensuring consistency of insulation performance across production batches; Meeting stringent design requirements for electrical clearance and creepage distance.
Delivery Period:
Standard models and structures: 30-45 days
Non-standard customization / complex multi-channel structures / special metallization requirements: 60-90 days
Alumina Ceramic Electrical Terminal Block is a precision ceramic electrical insulation component manufactured from 95%-99% alumina (Al₂O₃) ceramic. Designed for electrical connection and insulation support in high-temperature and demanding environments, it provides excellent dielectric strength, thermal stability and mechanical reliability. This ceramic terminal block is widely used in optical communication equipment, optoelectronic systems, semiconductor equipment, power electronics and industrial e
CERAMPRO provides different alumina ceramic grades to meet various electrical insulation, temperature resistance and reliability requirements.
| Material Grade | Characteristics | Typical Applications |
|---|---|---|
| 95%-96% Alumina Ceramic | Good electrical insulation performance, stable mechanical strength and cost-effective performance. | General ceramic electrical insulation components. |
| 99% High Purity Alumina Ceramic | Higher purity, improved temperature resistance and excellent chemical stability. | High-reliability electronic, optoelectronic and semiconductor applications. |
Optical Communication & Optoelectronic Systems:
Used in optical communication equipment, optoelectronic systems, laser equipment and high-reliability electrical connection components requiring stable insulation performance.
Semiconductor & Electronic Equipment:
Applied in semiconductor equipment, electronic assemblies, power modules and high-temperature electrical systems requiring ceramic electrical insulation components.
Industrial & Energy Applications:
Suitable for power transmission systems, new energy vehicles, rail transit, aerospace electronics, petrochemical equipment and advanced machinery.
Alumina ceramic terminal blocks maintain structural stability and insulation performance in high-temperature environments where conventional polymer materials cannot meet requirements.
Provides stable dielectric performance and helps reduce leakage current and electrical failure risks in high-voltage applications.
High-strength ceramic structures provide resistance against cracking and mechanical stress during assembly and long-term operation.
The fully dense ceramic structure provides low water absorption and resistance to moisture, chemicals and harsh operating environments.
CERAMPRO supports custom alumina ceramic terminal block manufacturing based on OEM drawings, including dimensions, hole structures, terminal spacing and metal insert requirements.
| Parameter | Technical Indicator | Functional Significance |
|---|---|---|
| Material Grade | 95%-99% Alumina (Al₂O₃) | High mechanical strength and excellent thermal stability |
| Max Operating Temperature | 1000°C - 1500°C | Maintains structural integrity in extreme heat environments |
| Dielectric Strength | 15 - 20 kV/mm | Prevents electrical leakage between terminals under high voltage |
| Volume Resistivity | >10¹⁴ Ω·cm | Provides reliable electrical insulation at elevated temperatures |
| Flexural Strength | 300 - 350 MPa | Resistance to mechanical stress and cracking |
| Water Absorption | 0% (Fully Dense) | Prevents moisture-induced conductivity and short circuits |
| Combustibility | Non-combustible (Grade A1) | No smoke or toxic gas emission during fire conditions |
| Insert Material | Nickel-plated Brass / Stainless Steel | Provides conductivity and corrosion resistance at terminal points |
| Material | Advantages | Applications |
|---|---|---|
| Alumina Ceramic | Excellent electrical insulation, high temperature resistance and stable performance. | Ceramic terminal blocks, electrical insulation components, optical equipment and semiconductor equipment. |
| Aluminum Nitride (AlN) Ceramic | High thermal conductivity and excellent heat dissipation capability. | High-power electronic and thermal management applications. |
| Steatite Ceramic | Good insulation performance and cost advantage. | General electrical components. |
| Plastic Materials | Low cost and easy processing. | Low-temperature electrical applications. |
An alumina ceramic electrical terminal block is a ceramic insulation and connection component manufactured from alumina ceramic for reliable electrical connections in high-temperature, high-voltage and harsh environments.
Alumina ceramic provides excellent electrical insulation, high temperature resistance and mechanical strength compared with conventional insulation materials.
CERAMPRO provides 95%-96% alumina ceramic and 99% high purity alumina ceramic options according to different application requirements.
Yes. Alumina ceramic terminal blocks can be used as ceramic electrical insulation components and connection parts in optical communication equipment and optoelectronic systems.
Applications include optical communication, semiconductor equipment, power electronics, renewable energy, aerospace and industrial systems.
Yes. CERAMPRO supports custom alumina ceramic terminal block manufacturing, including dimensions, hole structures, terminal layouts and metal inserts.
Depending on material grade and design, alumina ceramic terminal blocks can operate in high-temperature environments from 1000°C to 1500°C.
Alumina ceramic focuses on electrical insulation and stability, while AlN ceramic provides higher thermal conductivity for heat dissipation applications.
Yes. CERAMPRO supplies customized ceramic electrical components to OEM customers in Germany, Japan, the USA and Europe.
CERAMPRO provides customized alumina ceramic electrical insulation components with ceramic material expertise, precision manufacturing capability and OEM support for global customers.
