3.0 W/m·K
Max thermal conductivity
24h
Quote turnaround time
100%
Electrical test before shipment
3–5 days
Prototype lead time
Aluminum + PI Hybrid Structure Combines high thermal conductivity with flexible PI, enabling creative designs and flexible interconnections not possible with standard MCPCBs.
Offers improved routing flexibility and electrical performance compared to standard single-layer MCPCBs—ideal for more complex lighting designs.
Copper Core for Extreme Heat Dissipation Designed for high-power lighting applications, offering exceptional thermal conductivity up to 400 W/m·K, far beyond standard aluminum MCPCBs.
Manufacturing Capabilities
Full capability range for custom MCPCB orders — prototype to production. All values are standard process; tighter tolerances available on request.
| Parameter | Available Range | Standard | Notes |
|---|---|---|---|
| Base Material & Stackup | |||
| Aluminum substrate thickness |
0.5 mm
0.8 mm
1.0 mm
1.2 mm
1.5 mm
2.0 mm
3.0 mm
| 1.5 mm | 1060 / 5052 alloy; 3.0 mm for heavy-duty thermal applications |
| Thermal conductivity |
| 1.0 W/m·K | Dielectric material: HA80 / Bergquist / Ventec. Higher grade = thinner dielectric layer possible |
| Dielectric thickness | 75 µm 100 µm 120 µm 150 µm 200 µm | 100 µm | Thinner dielectric = better thermal transfer; requires higher-grade material |
| Layer count | Single-sided (1L) Double-sided (2L) Multi-layer (≥4L) | 1L | Multi-layer aluminum PCB requires blind/buried via process; lead time extended |
| Copper & Circuit Design | |||
| Copper weight | 0.5 oz 1 oz 2 oz 3 oz 4 oz | 1 oz (35 µm) | Heavy copper (≥3 oz) requires trace width compensation in Gerber files |
| Min trace width / spacing |
4/4 mil 1 oz copper
5/5 mil 2 oz copper
6/6 mil 3–4 oz copper
| 4/4 mil | Values vary by copper weight; provide copper weight in Gerber stack-up notes |
| Min drill hole diameter | 0.3 mm mechanically drilled | 0.5 mm | No through-hole plating on 1L boards; component windows used for through-hole components |
| Countersink / counterbore holes | Min Ø 0.5 mm Max depth: substrate thickness − 0.15 mm | On request | Specify angle (82° / 90°) and diameter in fabrication notes |
| Max board size | 500 × 600 mm | — | Larger panels available on inquiry; V-scoring and tab-routing supported |
| Board thickness tolerance | ± 0.1 mm | ± 0.1 mm | Tighter tolerance (± 0.05 mm) available for precision mechanical assembly |
| Surface Finish & Solder Mask | |||
| Surface finish |
ENIG
HASL (lead-free)
OSP
Hard Gold
Immersion Silver
| ENIG | ENIG preferred for fine-pitch SMD and wire bonding. Hard Gold for edge connectors |
| Solder mask color |
White
Black
Green
Blue
Red
None
| White | White preferred for LED applications (reflectivity). Black maximises thermal radiation in high-power designs |
| Silkscreen | White Black Yellow | White | Min line width 0.15 mm; min text height 0.8 mm |
| Solder mask thickness | 10–25 µm over copper | 15 µm | Double-print process applied on heavy copper (≥2 oz) to bridge step edges |
| Lead Time & Quality | |||
| Prototype lead time | 3–5 business days | 5 days | Expedite (3-day) available; requires DFM approval within 24h of order |
| Production lead time | 7–10 days standard 12–15 days heavy copper / multi-layer | 10 days | Based on confirmed Gerber files and stackup; excludes shipping |
| Electrical testing | 100% flying probe (all orders) | Flying probe | Net-list verified against Gerber data; test report included with shipment |
| Optical inspection | 100% AOI (inner + outer layer) | AOI | Outer layer AOI post-etch and post-solder mask; defect images logged |
Upload your Gerber files today and our engineering team will review your design and provide a competitive quote within hours.
Aluminum PCB is a type of printed circuit board with aluminum as the core substrate.It is designed for high-power and high-heat electronic applications, such as communication equipment and LED lighting.Aluminum has excellent thermal conductivity and quickly transfers heat from the circuit layer to the metal substrate.This helps extend device life and improve overall stability.
The standard Stackup for Single Aluminum board is made of copper layer, insulation layer and alumunim layer. In some high end application, double layer aluminum PCB will be adopted. The stackup of 2L Aluminum PCB will be following copper layer, insulation layer, alumunim layer and copper. In some special application, mutilayer alumnium PCB will be used.
Copper Circuit Layer:It is the top layer of the PCB and is mainly made of electrolytic copper foil. The thickness is usually between 1 and 10 oz. Thicker copper can carry higher current. Circuit graphics are etched on this layer for component placement and electrical signal transmission.
Dielectric Layer: This is the core functional layer of the aluminum PCB.It is located between the copper foil and the aluminum base. The thickness is about 50-200 µm.Its main function is to provide electrical insulation and transfer heat from the circuit layer to the aluminum base efficiently.
Aluminum Base Layer: This layer mainly provides mechanical support and helps dissipate heat by using the excellent thermal conductivity of aluminum. HXD usually uses aluminum alloys such as 5052 or 6061,with a thickness generally between 0.5 mm and 3.0 mm. The most common thicknesses are 1.0 mm, 1.5 mm, and 2.0 mm.
Aluminum Base Protection Layer: This is an optional layer, usually added during processing, to protect the surface of the aluminum base from scratches, corrosion, and to provide
Aluminum PCBs offer high thermal conductivity, helping heat dissipate quickly in high-power applications.
Aluminum is affordable and recyclable, reducing the need for extra cooling solutions.
Strong mechanical structure improves reliability and extends the product lifespan.
Similar CTE to copper ensures stability under temperature changes and thermal cycling.
Low material density helps reduce weight while maintaining high performance.
Aluminum PCBs are widely used in high-power lighting applications such as LED street lights, stage lighting, and large backlight modules. With mature manufacturing capabilities, HXD supports extra-long single-sided aluminum PCBs up to 1.2 m or 1.5 m. This helps ensure uniform lighting across the board and long-term reliability of the lamps.
Aluminum PCBs are commonly used in automotive lighting systems, on-board chargers (OBCs), and various types of power units.Aluminum PCBs have excellent heat dissipation performance and mechanical stability, and are able to maintain stable operation under high temperatures, vibration, and long periods of continuous operation.
Aluminum PCBs help achieve efficient heat dissipation in limited space and support thinner and smaller electronic products. Typical applications include power adapters, audio devices, and various consumer electronics
FAQ
Everything engineers and buyers ask us most often about Aluminum PCB.
