Ceramic insulation refers to:

It utilizes the extremely high resistivity of ceramic materials to prevent the passage of electric current.

Most industrial ceramics are insulating materials.

For example:

Alumina ceramics (Al₂O₃)
Aluminum nitride ceramics (AlN)
Silicon nitride ceramics (Si₃N₄)
Zirconium oxide ceramics (ZrO₂)
Boron nitride ceramics (BN)
Macro-compatible ceramics

These materials have very high volume resistivity.

For example:

96% alumina ceramics

Volume resistivity:

10¹⁴ Ω·cm

Breakdown voltage:

≥25 kV/mm

This means that current can hardly pass through the ceramic body.

The main function of ceramic insulation

Electrical isolation

Prevent leakage and short circuit.

High voltage insulation

Used for the protection of high-voltage equipment.

Circuit support

It both supports the components and ensures insulation safety.

Common Applications

Ceramic insulating rings

Ceramic insulating sleeves

Ceramic substrates

Semiconductor equipment insulation components

Power equipment insulation structural components

New energy vehicle insulation components

Many people mistakenly believe that:

Ceramic resistors are simply “ceramics that conduct electricity”.

That’s not actually accurate.

Ceramic resistors typically refer to:

Resistive elements manufactured using ceramics as a matrix or carrier.

The actual resistive effect is often caused by:

Metal oxides

Resistive paste

Resistive film

Instead of the ceramic itself.

Structure of ceramic resistors

Usually by:

Ceramic matrix

Responsibilities: Insulation, support, high temperature resistance

resistive layer

Responsibilities: Current limiting, voltage division, and power consumption.

They are composed of various elements; therefore, the ceramic element in a ceramic resistor mainly serves structural and insulating functions.

Common ceramic resistor products

For example:

Cement resistor

Thick film resistor

Power resistor

High voltage resistor

Heating resistor element

They typically use ceramic materials as the supporting substrate inside.

Simply put:

Ceramic insulation

Purpose: To prevent current from flowing.

Ceramic resistor

Purpose: To allow current to flow according to a set value

This is because:

Ceramic materials inherently possess:

High insulation

High temperature resistance

High stability

Therefore, they are very suitable as base materials for electronic components.

For example:

Alumina ceramics

can be used not only to manufacture:

insulating sleeves

ceramic substrates

but also as:

thick film resistor substrates

power resistor carriers

and other applications.

With the rapid development of high-voltage, high-power equipment:

The insulation performance advantages of industrial ceramics are becoming increasingly apparent.

For example:

New energy vehicles

Applications:

IGBT modules

Battery management systems

Motor controllers

Semiconductor Equipment

Applications:

Ceramic electrostatic chucks

Ceramic insulating rings

Wafer support components

Power Electronic Equipment

Applications:

High-voltage insulation components

Power module substrates

Compared to plastics and common insulation materials:

Industrial ceramics offer:

✔ Higher insulation strength

✔ Higher temperature resistance

✔ Longer service life

✔ Greater dimensional stability

Different materials are used for different applications:

Among them:

Alumina ceramics are currently the most widely used and cost-effective insulating ceramic materials.

Ceramic resistors are not the same as ceramic insulators, but the two are inseparable.

Many people believe that ceramic resistors and ceramic insulators are the same product, but in fact they are fundamentally different.

The core function of ceramic insulation is to prevent current from flowing through it;

The core function of ceramic resistors is to control the flow of current.

Industrial ceramics, with their excellent insulation properties, high temperature resistance, and structural stability, can serve as both high-performance insulating materials and important matrix materials for resistors.

With the development of industries such as new energy vehicles, semiconductors, and power electronics, the application value of high-performance industrial ceramics is constantly increasing.

Dongguan Haikun New Materials Co., Ltd.

Focusing on the research and development and precision machining of high-performance industrial ceramics, we provide:

Alumina ceramic parts
Aluminum nitride ceramic substrates
Silicon nitride ceramic structural parts
Zirconium oxide ceramic precision parts
Electronic insulating ceramic assemblies

Supports:

✔ Customization based on provided drawings

✔ Precision grinding

✔ Laser cutting for micro-hole processing

✔ Mirror polishing

✔ Small batch prototyping and mass production

Providing professional industrial ceramic solutions for the electronics, power, new energy, semiconductor, and high-end equipment manufacturing industries.