Aluminum PCB

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What Is Aluminum PCB

An Aluminum PCB is a type of metal-core printed circuit board (MCPCB) that uses an aluminum substrate instead of a traditional FR4 base. It is known for excellent thermal conductivity, high durability, and superior heat dissipation, making it ideal for LED lighting, power electronics, and automotive applications. The aluminum base allows for efficient heat transfer, reducing component overheating and increasing the reliability of high-power circuits.

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Aluminum PCB

Aluminum circuit board

Aluminum PCB Manufacturing Process

Aluminum PCB manufacturing involves selecting an aluminum core with dielectric insulation, applying copper foil, and etching circuit traces. A thermally conductive dielectric layer is added, followed by drilling and via plating. A solder mask and surface finish (OSP, HASL, ENIG) provide protection. Rigorous electrical and thermal testing ensures reliability and performance for high-power applications.

Applications of Aluminum PCBs

LED Lighting – Used in high-power LED modules, streetlights, and automotive headlights.

Power Electronics – Ideal for power amplifiers, inverters, and battery chargers.

Automotive Industry – Used in engine control units, electric vehicle power systems, and lighting.

Telecommunications – Supports RF applications, base stations, and high-frequency circuits.

Consumer Electronics – Found in audio amplifiers, computer power supplies, and cooling systems.

SCSPCBA’s Aluminum PCB Manufacturing Capabilities

PCB Board Fabrication Capabilities
Aluminum PCB Board Fabrication CapabilitiesAluminum Circuit Board Specifications
Aluminum PCB types

Single-sided, double-sided, single-layer, double-layer,
4-layer, and flex aluminum PCB
Base Thickness 0.5mm–3.0mm
PCB layer quantity

Rigid aluminum PCB: 1, 2, and 4
Flex aluminum PCB: 1
Min. Hole Size
0.2mm
PCB quality level
IPC-A-600 Class 3/2/1Min. laser drill diameter
0.075mm
Thermal conductivity

1W/mK to 9W/mKMin. Line Width/Spacing

3mil/3mil
Aluminum PCB material
3003 (pure aluminum)
5052 (Al-Mg alloy)
6061 (Al-Mg-Si alloy)
1100 (pure aluminum)
Thermal Conductivity 1.0–3.0 W/mK
Dielectric material
Polymer filled with ceramicSolder Mask Color White, Black, Green
Copper thickness
1oz to 4oz (35μm to 140μm)
(Flex aluminum PCB: 0.5oz to 1oz)
Surface finishENIG, OSP, LF HASL, immersion tin,
immersion silver, immersion gold
(Only OSP for flex aluminum PCB)

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