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Metal Core PCB
Your Reliable Metal Core PCB Manufacturer in China
- We produce your multilayer metal core PCB designs (up to 4 layers).
- Deliver excellent thermal results with conductivity ratings up to 10.0 W/m. K.
- An aluminum core PCB or a copper core PCB can be chosen to provide the best heat dissipation.
- On our boards, you can use your demanding applications, such as high-power LEDs and automotive systems.
- All our boards are produced to the exact IPC standards for the utmost dependability.
- Your complete board is guaranteed perfection through 100% Electrical testing, AOI, and X-ray.
Are your electronics overheating? A metal core PCB is the engineering solution when conventional boards can not handle heat. It is also called an Insulated Metal Substrate (IMS PCB); it is similar to the popular FR-4 but has a solid metal substrate instead of the normal FR-4 core. This design secures key components by eliminating overheating, increasing performance, and improving reliability. This guide will teach you how this technology can take your next project to the next level.
What is Metal Core PCB?
Have you ever experienced overheating problems with electronic parts on a usual FR4 board? Your direct solution is a Metal Core PCB (MCPCB). An MCPCB, as opposed to the traditional types of boards, has a base layer made of metal, replacing the usual fiberglass material found in traditional boards, and this makes the whole board a formidable heat-dissipating device. Its primary purpose is to effectively dissipating heat from delicate components, preventing them from being damaged and prolonging their usage time. It is also sometimes known as an insulated metal substrate (IMS) PCB; the names mean the same thing: a board designed to provide better thermal control.
Your choice of the core metal is purely dependent on the nature of your project. The most popular option would be aluminum core PCB, which would provide a nice balance of thermal conductivity against the cost, particularly LED metal core PCBs. A copper core PCB is the ultimate solution if your design produces too much heat and demands top performance. It is more costly but cannot be rivaled in terms of thermal performance. Also, there are steel alloys when you require additional rigidity and toughness.
Basic Structure of Metal Core PCB
To understand the functionality of your metal core PCB, it is better to examine its specialized structure. It is a carefully designed heat shield for your circuitry.
Top to bottom, here is how we assemble your custom metal core PCB:
- Solder Mask: This is a protective top coat. It will stop solder bridges between pads during assembly and prevent the oxidation of your copper circuit.
- Circuit Layer: This is copper foil, on which you make the electrical pathways. We construct this to your requirements, generally with a thickness of 1 oz. to 6 oz.
- Dielectric Layer: It is the core of an IMS PCB. The material has excellent electrical insulating properties but is also a good conductor of heat. It prevents the flow of electricity to the metal core while allowing heat to pass through freely.
- Metal Core Layer: It is the base of the board. This metal core material, typically made of aluminum or copper, is equivalent to a large heatsink that removes heat from the dielectric layer and helps cool your components.
Commonly Used Cores in Metal Core PCB
The success of your project depends on selecting the right metal core PCB material. Your decision relies on your thermal demands, cost, and mechanical necessities. Although we have specially alloyed materials, the two main alternatives are aluminum and copper.
Aluminum Core PCBs
An aluminum core PCB should be the ideal solution to most of your projects. It provides excellent thermal conductivity and a low-cost-to-lightness ratio. It is easy to manufacture, which is why it has become an industry standard, particularly in LED metal core PCB applications.
Copper Core PCBs
A copper core PCB is what you need when the design requirement requires the utmost thermal performance. Copper is more conductive to heat than aluminum, allowing it to be more suitable in applications that require extreme levels of power. It is, however, heavy, expensive, and more complex to fabricate and should be reserved for your most demanding designs.
Core and Copper Thickness
A metal core PCB can be specified with a 30-125 mil thickness. Your board can be built using 1 to 10 oz copper foil thickness.
Advantages of Metal Core PCB
Selecting a metal core PCB provides the benefits you need for the designs of your high-power applications. It directly addresses the most important problem of thermal management. This results in a higher and better end product. Let us see what advantages you can take your next project to a new level.
Superior Heat Dissipation
An IMS PCB’s major advantage is its good heat dissipation. The metal base serves as a massive heatsink, effectively pulling harmful heat away from your components. This maintains the operating temperatures at low levels, which is why they are critical to applications that require high power, such as LED metal core PCB.
Increased Durability and Stability
A metal core in your board will make it much stronger. The aluminum core PCB is highly durable compared to commercial PCBs using FR4, as it is resistant to physical damage in assembly and operation. It is also a great, dimensionally stable material, and therefore its shape does not warp or distort as temperatures vary.
Enhanced Performance and Design Freedom
With improved heat management, you can do even more with your designs. You can comfortably operate components at increased power or put them closer together to achieve a more compact design. This enables you to design even more powerful and efficient products without using bulky and separate heatsinks or fans.
Lightweight and Eco-Friendly
MCPCBs are very strong yet, surprisingly, quite lightweight. An aluminum core PCB can often save the overall weight on your end product instead of an FR4 with an external heatsink. Metal core is also non-toxic and is relatively easily recycled, which makes it a more responsible environmental choice.
Types of Metal Core PCB
Depending on your design, your metal core PCB can be constructed in various ways. We categorize them depending on how we position the metal core and circuit layers. Knowing these types will enable you to get the best board in a metal core PCB manufacturer that suits your application.
Single Layer MCPCB
This is the most basic form of IMS PCB. Its structure is simple but effective. On the top part, you receive one copper circuit layer. This layer is shielded away by a thermally conducting dielectric with the base of aluminum or copper. It is a widely used low-cost option.
COB MCPCB
COB is the abbreviation of Chip-on-Board. We put your bare chip die directly on your metal core in this type. This establishes a direct channel for thermal distribution, avoiding the dielectric layer from transferring unmatched heat. The technology offers the best thermal performance and is ideal in challenging LED metal core PCB designs.
Double-Layer MCPCB
It is a board with two layers of copper circuits on the same side of the metal core. The solid metal base is kept at the very bottom. This design can have a more complicated route than a one-layer board. But you can only mount components on the top side.
Double-Sided MCPCB
The metal core is positioned in the middle of a double-sided MCPCB, similarly to a sandwich. Both the top and the bottom sides receive a copper circuit. The two sides are linked by vias, after which you can put components on both sides. This design is great for maximizing circuit density.
Multi-layer MCPCB
A multilayer metal core PCB can be used with your most complex designs. This board is layered with many circuits, all on a solid metal base at the bottom. It is compatible with advanced vias, including blind and buried vias. It is the perfect answer to the high-density and high-power product.
PCBTok’s MCPCB Capabilities
The table below outlines our complete manufacturing capabilities and specifications.
| Feature | Specification / Capability |
Core Specifications | |
| Material / Type | Metal Core PCB (MCPCB), Aluminum Core, Copper Core |
| Layer Count | 1 to 4 Layers |
| Board Thickness | 0.02″ to 0.18″ (0.5mm to 4.6mm) |
| Copper Weight | 0.5oz to 4oz |
| Board Dimensions | Min: 0.2″ x 0.2″ (5x5mm); Max: 43.3″ x 19″ (1100x482mm) |
Design Rules | |
| Min. Trace / Space | 0.5oz: 4/4mil; 1oz: 5/5mil (150µm); 2oz: 5/7mil (200µm); 3oz: 7/8mil; 4oz: 10/10mil |
| Min. Annular Ring | 0.5oz: 4mil; 1oz: 5mil (125µm); 2oz: 7mil; 3oz: 10mil; 4oz: 16mil |
| Hole & Via Sizes | Min NPTH: from 0.7mm; Min PTH (2-Layer): 0.3mm; Tolerance: PTH ±4mil, NPTH ±3mil |
Thermal Performance | |
| Thermal Conductivity | Copper: 380 W/mK; Aluminum: 140–220 W/mK; Prepreg (Insulation): 1–8 W/mK |
| Insulation Layer (Prepreg) | Thinner layer improves heat transfer but lowers breakdown voltage (e.g., 75µm thickness provides 6.0kV breakdown) |
| Performance vs. FR-4 (1W LED) | Thermal Resistance: 3 K/W (vs. 8-45 K/W for FR-4) Temperature Rise: 10°C (vs. 15-53°C for FR-4) |
Special Capabilities | |
| Z-Axis Milling | Depth milling can bond components directly to the aluminum base for maximum heat transfer. |
Finishes & Coatings | |
| Surface Finishes | HASL (Leaded & Lead-Free), ENIG (Immersion Gold), Immersion Silver, OSP |
| Solder Mask | Colors: White, Black, Green, etc. (Glossy/Matt); Solder Dam: 4mil (Green), 5mil (Others) |
| Silkscreen | Colors: White, Black; Min. Feature Size: 5mil width / 24mil height |
Mechanical & Quality | |
| Profiling & Routing | CNC Routing, V-Cutting; Tolerance: ±5mil; Min. Slot: 40mil |
| Electrical Testing | Flying Probe & Fixture Testing (up to 300V) |
| Bow & Twist Tolerance | ≤ 1% |
| Quality Standards | IPC Class 2, IPC Class 3, ISO9000 |
Applications of Metal Core PCBs
Metal Core PCBs possess both excellent thermal management and superior mechanical strength, thus fitting in a very broad set of demanding applications. Their high heat dissipation capabilities make them a crucial component of any environment in which components receive high thermal loads.
- LED Lighting: The most popular use of MCPCBs, they are essential in dealing with the serious heat produced by high-power LEDs. Their effectiveness in dissipating this thermal energy guarantees high performance and life spans in all the modern lighting systems, including headlights and floodlights.
- Power Switching: In power electronics, MCPCBs are required to ensure the stability and reliability of the power converter. They are commonly used in switching power devices of high power, such as industrial solid-state relays and power semiconductor AC-DC converters, where they play an important role in ensuring successful operation through proper thermal management.
- Automotive Electronics: The harsh automotive conditions of high temperature require powerful heat solutions. MCPCBs are an essential component of electronics working close to heat, with the greatest place being using the Engine Control Unit (ECU), which is based on a metal core substrate since it draws on engine heat to dissipate and achieve maximum reliability.
Why Choose PCBTok as Your Metal Core PCB Partner?
Here, at PCBTok, we pride ourselves on being able to supply you with a high-quality product you need as a Metal Core PCB, designed to your specifications and requirements, and provide support all the way from prototypes to mass production. We not only do MCPCB manufacturing, but we also offer complete SMT assembly, so you have a one-stop shop that you can count on. Equipped with expert fabrication of both aluminium core and heavy copper PCB, we are well prepared to cope with various project needs, thus we are in a position to suit the individual thermal and electrical needs of your application.
As a specialized metal core manufacturer, based on the information you provided, we can perform design rule checks (DRCs) and design for manufacturability (DFM) checks on your project. On one hand, this ensures that design defects can be eliminated; on the other hand, it allows us to understand your project better. This provides a successful production and speeds up your project cycle. Just upload your Gerber file today, and let us help your project and offer you a quick quote.
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Want to begin your next project? We are your professional metal core pcb manufacturer. We can employ the latest processes to guarantee that your board will perform at superior levels be reliable. Or our highly accurate tools, can produce a neat and clean cut on every board.
Throughout metal core pcb manufacturing we exert extreme control over all factors, such as peel strength and quality of soldering. This is to ensure your board is well above average in terms of electrical and thermal standards. Whether it is a led metal core pcb or a board used in industrial power supplies we provide a product you can count on. Get a quote with PCBTok today.
Frequently Asked Questions
Yes, we do have full metal core PCB prototype services. The procedure is similar to common PCB prototyping, which means you can get started easily. We do everything, including fabrication, assembly, and a final functionality test. You have our assurance that we will turn your design into a thoroughly tested, high-quality prototype.
First, you must submit all your design files, usually in Gerber format. These files should clearly specify your circuit layout, placement of components, and routing paths. You shall also submit a detailed Bill of Materials (BOM). All components, quantities, reference designators, and manufacturer part numbers on your BOM should also be given to make assembly of the product as hassle-free and accurate as possible.
No. Although most MCPCBs are single-layer, we make double-sided, multi-layer, and even thermoelectric separation MCPCBs for complex and high-heat applications.
A standard metal core PCB comprises three layers: a metal base (such as an aluminum core PCB), an insulating, thin dielectric layer, and the top copper layer onto which your circuit traces are placed.
The most important distinction is the core material. A metal core PCB has an aluminum or copper base to ensure efficient heat dissipation, and it is excellent in high-heat applications such as LED metal core PCB lighting. FR-4 employs a fiberglass core and is applicable in general-purpose electronics.
Thermal conductivity will be determined by the type of metal core PCB material you select. Available options range between a normal 1.0 W/m K and 10.0 W/m K. The final value depends on what you select for the dielectric and metal base.