What is aluminum pcb thermal conductivity?
The thermal conductivity of aluminum substrate materials is relatively high compared to other metals and materials.
The thermal conductivity of pure aluminum is around 237 W/mK, while aluminum alloys have slightly lower thermal conductivity values, typically ranging from 120 to 220 W/mK.
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Email is : mcpcb@andwinmcpcb.com
What Is aluminum pcb thermal conductivity?
The high thermal conductivity of aluminum substrate materials makes them ideal for applications that require efficient heat transfer, such as heat sinks, electronic components, and cooling systems.
Aluminum substrates are also commonly used in LED lighting applications, where they help to dissipate heat generated by the LEDs and prevent overheating.
Overall, the high thermal conductivity of aluminum substrate materials makes them a popular choice for a wide range of applications where efficient heat transfer is critical.
How to calculate the thermal conductivity of aluminum substrate
The thermal conductivity of aluminum substrate can be calculated using the following formula:
k = Q × L / (A × ΔT)
where:
k = thermal conductivity (W/mK)
Q = heat flow rate (W)
L = length of the sample (m)
A = cross-sectional area of the sample (m2)
ΔT = temperature difference across the sample (K)
To measure the thermal conductivity of an aluminum substrate, a heat source is applied to one end of the sample, and a temperature sensor is placed at the other end.
The heat flow rate and temperature difference are measured, and the length and cross-sectional area of the sample are known.
Once these values are obtained, the thermal conductivity can be calculated using the formula above.
It is important to note that the thermal conductivity of aluminum can vary depending on factors such as temperature, alloy composition, and impurities, so it is recommended to use values specific to the material being tested.
How to use the thermal conductivity of aluminum substrate
The thermal conductivity of aluminum substrate is an important parameter in many applications, especially in the field of heat transfer and thermal management.
It is used to determine the rate of heat transfer through the material, which is critical in designing and optimizing thermal systems.
Overall, aluminum substrate manufacturers can be found in many different countries around the world, with production facilities located in areas with access to raw materials and transportation infrastructure.
This arrangement is made so that the heat can dissipate through the metal core and transmit to the chassis.
Most of the LED or analog devices are populated with considerably larger boards.
The surface of the boards finishes by dissipating the heat.
While using the MCPCBs, it is obliged to take proper caution because it is constructed with some complex and complicated metal layers laminated with FR4 based on glass material.
The chemistry for lamination differs while the board is fabricated.
If the board is bonded properly then there might be voids below the lamination and caution is necessary.
The dissipated fixture of heat is anticipated from the metal core which is needed to be defined and designed carefully.
Applications Of aluminum pcb thermal conductivity
The technology of the metal core PCB is ideal for its applications that generate immense heat and have difficulty being cool down using conventional fans or other cooling methods.
MCPCBs play an integral role to achieve a high illumination with fewer requirements than LEDs require.
The fabrication process of metal core PCB is helpful for the applications
Since the MCPCBs are most often used in LED technologies for producing a certain illumination the light-emitting diodes releases the heat in applications like:
– General lighting
– Automotive systems
– Industrial, telecom, power supplies, and high voltage regulators types of power converters
– Photovoltaic
– Street safety lightings and streetlights
– Backlight applications
Military and aerospace are another two other sectors appropriate to utilize the benefits of metal core PCBs in their applications.
These sectors are quite sensitive and need to endure frequent thermal cycling, limits of temperature and humidity, along with repeated mechanical shocks.
The MCPCB deals according to the operational requirements only if better structural veracity and thermal conductivity enabling withstanding greater shocks.
The higher the conductivity of thermal, the better it is for the temperature distribution throughout the boards as it ensures a uniform for thermal cycling.
It also stops forming hot spots before near to the active components.
Other than these, MCPCB works great in solar panels and motion control applications.
The combination of a metal core with HDI PCB technology can create an advanced circuit technology including microwave RF PCB, flex PCB, and rigid-flex PCBs.
As the demand for PCBs is high due to the remarkable benefits, the metal core PCB is the most widely used one among all the others.
It ensures high circuitry density, thermal management, and enhanced reliability for enhanced performance.
Thermal conductivity of 2 Layers thermal Pad MPCB
Thermal pad area is 385 W/m.k
Capability of Metal core PCB
| Metal core PCB Capability | |||
| Item | Technical specification | ||
| Standard | Advanced | ||
| Board thickness | Maximum (mm) | 3.0 | 5.0 |
| Panel size | Maximum (mm) | 600×1170 | / |
| Layer count | Aluminum PCB | 1-8L | 10 L |
| Copper PCB | 1-8L | 10 L | |
| Iron PCB | 1 | / | |
| ceramics PCB | 1-2 | / | |
| Thermal Conductivity | Aluminum PCB(w/m.k) | 0.8 to 12 | |
| Copper PCB(w/m.k) | 2.0-378 | / | |
| ceramics PCB(w/m.k) | 24 | ||
| Drilling | Minimum drill diameter (mm) | 1.0 | 0.8 |
| 2 Layer ALPCB Via | 0.3 | / | |
| Lines/spaces | Minimum | 0.2mm/0.2mm | 0.15mm/0.15mm |
| Material | Chao Shun(CCAF)(China) | Yes | / |
| Hua Dian(China) | Yes | / | |
| Chin Shi(TaiWan) | Yes | / | |
| Ventec(TaiWang) | Yes | / | |
| ITEQ(Tai Wan) | Yes | / | |
| ShengYi(China) | Yes | / | |
| Laird(US) | Yes | / | |
| Bergquist(US) | Yes | / | |
| Other brand per customer | Yes | / | |
| Final finishing | HASL Lead Free | Yes | / |
| HASL | Yes | / | |
| ENIG | Yes | / | |
| ENIPIG | Yes | / | |
| OSP | Yes | / | |
| Immersion Silver | Yes | / | |
| Immersion Tin | / | YES | |
2 Layers direct thermal path copper core pcb application
2 Layers direct thermal path copper core pcb are designed to dissipate heat generated by high-power LEDs,
which helps to increase the lifespan of the LED and improve its performance.
The aluminium base acts as a heat sink, which absorbs and dissipates the heat generated by the LED.
The 2 Layers direct thermal path copper core pcb is made by laminating a thin layer of copper onto an copper substrate.
The copper layer is then etched to create the circuit pattern.
2 Layers direct thermal path copper core pcb for LED lighting applications are available in various sizes and thicknesses, depending on the specific requirements of the application.
They are also available in single-sided, double-sided, and multi-layered configurations.
About Andwin MCPCB
Andwin Ciurcuits MCPCB davision set up on Feb. 2006.
Focus on providing metal core PCB for customer
In LED field and power supply field.
We can meet all your MCPCB manufacturing needs,
From single-sided Aluminum to
complex multilayered metal clad substrate PCBs
And from prototype through production.
The following is a list of the services and products
We offer:
• Metal Core PCB
• Thermal PAD MCPCB
• Aluminum PCB
• Copper based PCB
• Double sided Aluminum PCB
