High Speed PAlumina PCB

Alumina (Al2O3) is the most widespread material used in PCBs — a thermally conductive, electrically insulating ceramic substrate, ideal for any device that must dissipate and control heat.

Alumina PCB Capability

Alumina PCB

Al2O3 ceramic substrate

96% Alumina Substrate

Hybrid microelectronic circuits

99.5% Alumina Substrate

Smaller-grain, non-critical use

99.6% Alumina Substrate

Thin-film, smooth surface

Alumina PCB Sample

Worthy for many devices

Alumina PCB Board

Insulating & heat-dissipating

Alumina Substrate Grades

The Alumina PCB is made of three types of Alumina Oxide — 96%, 99.5% and 99.6% substrate — each highly effective for different devices.

96% Alumina substrate

Highly popular variant. Thick-film substrate is the standard format; extensively used for building hybrid microelectronic circuits thanks to best availability, minimal cost and high technical quality.

99.5% Alumina substrate

Used in smaller-grain-size, non-critical applications. Surface can reach a 2 µ-in max finish; available in larger sizes and better thickness, with less flexural / thermal / dielectric strength.

99.6% Alumina substrate

Standardized thin-film substrate for sputtered, evaporated and chemically vapor-deposited metals. < 1 µ-in surface roughness — high mechanical performance, excellent electrical insulation, good corrosion / wear resistance.

Why Choose Us?

✓ Good electrical insulation — ceramic Al2O3 substrate isolates circuit layers reliably.

✓ Moderate mechanical strength — excellent compressive strength in the ceramic circuit board.

✓ High operating temperature — roughly 350 °C to 1500 °C.

✓ Low expansion coefficient — 6–8 ppm/°C, less stress on solder joints.

✓ Better thermal properties — about 22–24 W/m·K.

✓ Hermetic package — near 0% water absorption; white color gives good light reflection.

Alumina Ceramic PCB Application

High power electronic semi-conductor module

Injection System

Anti-block Braking system

High-power LED

Chip Wafter

Street light

Fuel Sendor

Resistor Card

Electric power transmitter modules

Solar cell

Sensor

Telecome device

Frequently Asked Questions

1. What is an Alumina (Al2O3) PCB?

An Alumina PCB uses Al2O3 ceramic as the thermally conductive, electrically insulated substrate with copper circuit layers. Andwin builds it as a metal-base / ceramic substrate board for devices that must dissipate and control heat.

2. What Alumina substrate grades are available?

The source page lists 96%, 99.5% and 99.6% Alumina substrate. 96% suits hybrid microelectronic circuits (thick-film); 99.5% is for non-critical, larger-grain use; 99.6% is the thin-film grade with a smoother surface.

3. What are the typical thermal and electrical properties?

Per the source: operating temperature roughly 350–1500 °C, CTE 6–8 ppm/°C, thermal conductivity about 22–24 W/m·K, with good electrical insulation. Exact figures vary by grade — confirm with our engineering team for your design.

4. Where are Alumina PCBs used?

Per the source application list: high-power semiconductor modules, injection systems, anti-block braking systems (ABS), high-power LED, chip wafers, street lights, fuel sensors, resistor cards, electric power transmitter modules, solar cells, sensors and telecom devices.

5. How do I get a quote?

Send your PCB Gerber file and/or BOM to sales@andwinpcb.com (priority). Our team will quote as soon as possible, or you can submit the on-page form and we will contact you. Lead time and MOQ are confirmed per project.