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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.
Aluminum PCB
Aluminum PCB Manufacturing Process
1. Material Preparation – Select the appropriate aluminum core with dielectric insulation.
2. Circuit Patterning – Apply copper foil and create circuit traces via etching.
3. Dielectric Layer Application – Add a thermally conductive insulating layer.
4. Drilling & Plating – Drill holes and plate vias for component connections.
5. Solder Mask & Surface Finish – Apply a protective solder mask and a surface finish like OSP, HASL, or ENIG.
6. Testing & Quality Control – Perform electrical and thermal tests to ensure reliability.
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
| Aluminum PCB Board Fabrication Capabilities | Aluminum 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 3/2/1 | Min. laser drill diameter | 0.075mm |
| Thermal conductivity | 1W/mK to 9W/mK | Min. 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 ceramic | Solder Mask Color | White, Black, Green |
| Copper thickness | 1oz to 4oz (35μm to 140μm) (Flex aluminum PCB: 0.5oz to 1oz) | Surface finish | ENIG, OSP, LF HASL, immersion tin, immersion silver, immersion gold (Only OSP for flex aluminum PCB) |
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