Aluminum PCB is a metal core printed circuit board (MCPCB), which is widely used in the LED lighting industry.Common metals used for PCB are aluminium, copper and zinc.In addition to being cheaper than copper, aluminium has good heat transfer and heat dissipation capabilities.However, copper is considered to have better performance.Normal steel and stainless steel are both harder and less heat conductive than aluminum and copper.The choice of the kernel depends on the desired output and application.Usually, aluminum and copper layers are pressed together.
Aluminum variants have become more and more popular in recent MCCBs.They are built on the top of an aluminium alloy base (including magnesium, aluminium, and silicon-aluminium-magnesium alloy) instead of a glass fiber base.The alloy is designed to provide maximum electrical insulation and thermal conductivity.Typically, a heat conducting but electrically insulated thin layer is pressed between the metal base and the copper foil and etched into the desired circuit pattern.The metal base absorbs heat from the circuit through a thin dielectric.
Application of Aluminum PCB:
- General lighting applications (street lights, flashlights, spotlights, etc.)
- Backlight unit application
- System Automotive LED Application
- Power Converter: Telecom, High Voltage Regulator, Power Supply
- Hybrid Power/Motor Control Application
- Photovoltaic Power Generation
Aluminum PCB for LED
Aluminum PCB has become the new standard for many companies in the LED industry due to a variety of qualities including improved thermal performance.Some of its main functions and advantages are as follows.
Better heat transfer: Heat transfer refers to the movement of heat from one place to another.It is well known in the electronic field that continuous high temperatures can cause damage to PCB, thereby affecting its function, making heat transfer one of the most important aspects of PCB manufacturing.Aluminum is known for its heat transfer capacity.It can transfer heat from key sites to reduce heat damage to PCB.Aluminum design is up to 10 times more efficient than glass fibers.
High durability: Aluminum is stronger than ceramic and glass fibers.Damage resistance, better response to stress during manufacturing.It is also not easily damaged in daily operations, especially in vulnerable environments.
Light weight: In addition to durability, aluminum is also called light weight.This results in increased resilience, which is an important factor in manufacturing.The lighter the PCB, the lighter the final product used, the easier it will be to carry and transport.
Cheap price: Aluminum is found worldwide and is easier to extract than other metals, making it cheaper.Aluminum PCBs are cheaper than other heat transfer methods such as radiators.Although radiators may be more efficient in heat transfer, they are more expensive to add to PCBs.
Environmental friendly: recyclable and non-toxic, Aluminum PCB is easy to dispose of.
LED density increase: Glass fiber design transfers heat relatively slowly, resulting in heat accumulation.This factor limits the number of LEDs on the board.However, in the case of aluminium, more LEDs can be placed on the board and work effectively without exceeding the specified temperature tolerance.Because of the high thermal conductivity of aluminium, heat is transferred quickly.
Longer working hours: It is well known that prolonged use can cause the LED to heat up, which affects the quality and color of light and the entire life of the product.Aluminum PCBs have better heat transfer capability and help LEDs work at lower temperatures, thereby prolonging their life.
Application of LED lighting：
Due to its design flexibility, energy efficiency and low cost, Aluminum PCB is increasingly used in a variety of lighting applications and in many industries.Some common use cases include car headlights, airport runway landing lights, lighting for military applications, street lighting, highway tunnel lighting, photovoltaic or solar lighting, flashlights and lanterns, traffic and signal lighting, lighting for hospital operating rooms and high-growth factories, and so on.Some prominent applications of Aluminium PCB are mentioned below.
- Telecommunications: In the field of telecommunications, aluminium polychlorinated biphenyls are used in a variety of filter devices and high frequency amplifiers.
- Automotive: In the automotive field, in addition to electronic regulators and power controllers, Aluminum PCB LEDs can also be used in automotive indicators, headlights and brake lights.
- Computers: In this category, Aluminium PCBs are used for LED monitors, indicators, power devices, and CPU boards.
- Medical: Lighting tools for surgery and medical examination use high-power LED lights.Aluminum PCB is also used in medical scanning technology.