Aluminum PCB

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se unió: 30/12/2020

Aluminum PCBs contains dielectric metal substrates and bonded copper circuit layers that produce excellent heat transfer, helping to chill components while eliminating problems associated with the management of fragile ceramics.

When exceeding all customer expectations, Alcanta PCB is committed to becoming the best Aluminium PCB manufacturer.We provide a variety of conductive and conductive interface pads, thermal gap fillers, thermal phase change materials and thermal insulation materials, as well as specialized equipment for mass production.

Aluminum-based PCB can continuously improve the durability and long-term reliability of the final product through temperature control and corresponding failure rate reduction.Aluminum design also offers better mechanical stability and lower thermal expansion than other available materials.

Aluminum PCB Layer:
Aluminium PCB is a unique layered system composed of the following layers.

Circuit layer:Printed circuit foil, 1 oz to 5 oz thick.
Dielectric layer:Dielectric layers can have many different choices that provide electrical isolation with minimal thermal resistance.It is also used to bond the circuit layer to the base material.Each specific dielectric has its own UL certification.Please refer to the list below to understand the various materials in our stock to ensure a variety of options for fast delivery.
The basic level:The base layer is usually aluminum, but it can also be copper.Although there are many thickness options, the most common thickness is 0.040 inches (1.0mm).
Structure of Aluminum PCB:
Aluminum PCB is aluminum based CCl (CCL is a basic material of PCB). In fact, Aluminum PCB is very similar to FR4 PCB. The basic structure of aluminum PCB is four layers. It is composed of copper foil layer, dielectric layer, aluminum base layer and aluminum film.

Copper foil: the copper layer used is relatively thicker than ordinary copper clad laminate (1oz-10oz). A thicker copper layer means greater current carrying capacity.
Dielectric layer: the dielectric layer is a thermal conductive layer with a thickness of about 50 μ m to 200 μ M. Therefore, it has low thermal resistance.
Aluminum substrate: the third layer is aluminum substrate, which is composed of aluminum substrate. It has high thermal conductivity.
Aluminum based film layer: aluminum based film is selective. It has a protective effect by protecting the aluminum surface from scratch and unnecessary corrosion. It comes in two types, below 120 degrees or about 250 degrees
Classification of Aluminum PCB:
Aluminum PCB is basically divided into three categories.

General purpose aluminum pcb: the dielectric layer used here consists of epoxy glass fiber prepreg.
High thermal conductivity aluminum pcb: the dielectric layer is made of epoxy resin. The resin used must be of high thermal conductivity.
High frequency aluminum pcb: the dielectric layer consists of polyolefin or polyimide resin glass fiber prepreg
Aluminum PCB Advantage:
Improving product durability
Power density increase
Increase thermal efficiency
Reduce the number of interconnects
Lower junction temperature
Reduce PCB size
Eliminate old hardware
Reduce the workforce required for assembly
Various shapes and sizes
Minimize thermal impedance

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