Ceramic Electrical parts are 95% or 99% alumina components for electrical insulation, spacing, and structural support. Typical uses include power equipment, power-electronic assemblies, electronic instruments, and other systems that need a ceramic barrier between energized or heat-exposed parts.

Core Advantages

High Dielectric Isolation

Volume resistivity is specified at >=10^14 ohm-cm, and dielectric strength at >=15 kV/mm. In compact high-voltage assemblies, these values limit leakage through the ceramic and provide insulation between conductors separated by a narrow wall or gap.

Low Dielectric Loss at High Frequency

At 1 MHz, the dielectric constant is 9-10 and the dielectric loss tangent is <=3x10^-4. The low loss level limits dielectric heating during continuous high-frequency operation while the ceramic continues to perform as an insulator.

Alumina Stability at Elevated Temperature

The alumina body has a listed maximum working temperature of 1600°C. It can be used near heaters, hot conductors, and other thermally loaded electrical hardware without the softening or creep associated with polymeric insulation parts.

Customization

Geometry and Mounting Features

Curved surfaces, holes, slots, chamfers, and mounting details can follow the assembly drawing. Dimensions that control fit are set to the mating hardware.

Post-Sintering Finishing

Specified contact, locating, or mounting areas can be ground, polished, drilled, slotted, or chamfered after sintering.

Electrical Design Inputs

Operating voltage, frequency, temperature, and installation spacing are used as design inputs when selecting the material grade and insulation geometry.

Specifications

Parameter	Specification
Material Types	95%/99% Alumina Ceramic Electrical
Volume Resistivity (20℃)	≥10¹⁴ Ω·cm
Dielectric Strength	≥15 kV/mm
Dielectric Constant (1MHz)	9 - 10
Dielectric Loss Tangent	≤3×10⁻⁴
Max. Working Temperature	1600℃

Quality Control

Incoming ceramic material is checked for grade and batch identity before forming. Formed and sintered parts are then screened for shape defects, cracks, edge damage, and distortion before they move to final machining.

Finished parts are measured against the released drawing for critical dimensions, holes, slots, and mating features. When the order requires electrical verification, inspection also covers insulation resistance and withstand-voltage performance.

Final release includes appearance, quantity, and packing checks. Inspection records stay with the relevant batch, and polished or precision surfaces are separated in the package to reduce contact damage during transport.