WHAT IS Aluminum plate etching?

An aluminium PCB board is a type of printed circuit board (PCB) that uses an aluminium substrate instead of a traditional fibreglass or epoxy substrate.

Andwin provide thermal pad metal core PCB for customer, email us now for you PCB quote,
Email is : mcpcb@andwinmcpcb.com

What Is Aluminum plate etching?

Aluminum plate etching is a process of creating designs or patterns on an aluminum plate by using an etching solution.

The process involves coating the aluminum plate with a resist material, which is a protective layer that prevents the etching solution from affecting the areas that need to remain untouched.

The resist material is then removed from the areas that need to be etched, and the plate is submerged in the etching solution.

The solution eats away at the exposed aluminum, creating the desired design or pattern.

The etched plate can then be used for various applications, such as printing, engraving, or as a decorative piece. Aluminum plate etching is a popular technique in the art and design industry, as it allows for precise and detailed designs to be created on a durable and lightweight material.

Aluminum plate etching process

The aluminum plate etching process involves the following steps:

  1. Design creation:
    The first step is to create a design or pattern that will be etched onto the aluminum plate. This can be done using software programs like Adobe Illustrator or by hand-drawing the design.
  2. Plate preparation:
    The aluminum plate is cleaned and polished to remove any dirt, grease, or other contaminants that may affect the etching process.
  3. Resist application:
    A resist material is applied to the surface of the aluminum plate. This can be done using a brush, spray, or roller. The resist material is a protective layer that will prevent the etching solution from affecting the areas that need to remain untouched.
  4. Image transfer:
    The design or pattern is transferred onto the resist material using a transfer paper or film. The transfer paper is placed on top of the resist material, and the design is traced onto it using a stylus or pen.
  5. Resist removal:
    The resist material is removed from the areas that need to be etched using a solvent or by peeling it off manually.
  6. Etching:
    The aluminum plate is submerged in an etching solution, which eats away at the exposed aluminum. The etching time depends on the desired depth of the etch. The plate is removed from the solution and rinsed thoroughly with water.
  7. Resist removal:
    The remaining resist material is removed using a solvent or by peeling it off manually.
  8. Finishing:
    The etched aluminum plate can be polished, painted, or coated with a protective layer to enhance its appearance and durability.

Overall, the aluminum plate etching process requires precision and attention to detail to achieve the desired design or pattern.

Reasons for aluminum plate etching

  1. Identification:
    Aluminum plate etching can be used to create identification tags, nameplates, and labels that are durable and long-lasting.
  2. Decorative purposes:
    Aluminum plate etching can be used to create decorative designs on metal surfaces, such as jewelry, ornaments, and other decorative items.
  3. Circuit boards:
    Aluminum plate etching can be used to create circuit boards for electronic devices, such as computers and smartphones.
  4. Signage:
    Aluminum plate etching can be used to create high-quality, durable signs for businesses, public spaces, and other areas where signage is needed.
  5. Aerospace industry:
    Aluminum plate etching is commonly used in the aerospace industry to create parts and components for aircraft and spacecraft.
  6. Medical industry:
    Aluminum plate etching can be used to create medical devices and implants that are biocompatible and resistant to corrosion.
  7. Automotive industry:
    Aluminum plate etching is used to create components for vehicles, such as engine parts, transmission components, and suspension systems.
  8. Industrial applications:
    Aluminum plate etching is used in a wide range of industrial applications, such as manufacturing, construction, and metalworking.

Multilayer metal core pcb

Multilayer MCPCB could layout more circuit, the MCPCB smaller much.

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

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
ItemTechnical specification
Board thicknessMaximum (mm)3.05.0
Panel sizeMaximum (mm)600×1170/
Layer countAluminum PCB1-8L10 L
Copper PCB1-8L10 L
Iron PCB1/
ceramics PCB1-2/
Thermal ConductivityAluminum PCB(w/m.k)0.8 to 12
Copper PCB(w/m.k)2.0-378/
ceramics PCB(w/m.k)24
DrillingMinimum drill diameter (mm)1.00.8
2 Layer ALPCB Via0.3/
MaterialChao Shun(CCAF)(China)Yes/
Hua Dian(China)Yes/
Chin Shi(TaiWan)Yes/
ITEQ(Tai Wan)Yes/
Other brand per customerYes/
Final finishingHASL Lead FreeYes/
Immersion SilverYes/
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

Other metal core pcb your may interesting