Types of Aluminum PCBs
According to the construction and design, aluminum PCBs can be divided into different types. After studying all following types, we can see that aluminum PCBs have many characteristics in same, such as that the main purpose is to provide heat dissipation solutions for the applications involving high temperature.
The multilayer Aluminum PCB is typical one in power supply applications with multiple layers of thermally conductive dielectrics. These materials are very useful when they are combined with one or more layer of circuitry in which thermally conductive dielectric is buried between the layers with the help of blind vias which also act as a signal or thermal vias. It’s extremely helpful when provide an ideal solution for many applications concerning heat dissipation.
As a new addition in the development of aluminum products, flexible aluminum PCBs increasingly be applied in heat dissipation products. These materials come with polyimide resin integrated with ceramic filters which exhibit high flexibility, thermal efficiency and excellent electrical insulation. When it applied with aluminum material, the final product will save costly cables and connectors, and will bring more flexibility.
When it comes to more complex constructions, as the production of through Hole Aluminum PCB, a single layer of aluminum is back-filled and pre-drilled with before applying lamination, forming a core of multilayer constructions. Thermal bonding materials are then used to laminate the thermal materials on both sides of the aluminum. Once lamination is done, drilling is applied on the assembly. In order to maintain proper electrical insulation, the plated through holes are created as the result of drilling must pass through aluminum clearances.
Advantages and applications of aluminum PCBs
Aluminum PCBs consist of a metal-based, copper-clad laminate that delivers high performance, including excellent thermal conductivity and electrical insulation.
Advantages of Aluminum PCBs
•High level of heat dissipation
The aluminum PCB is better than FR4 based PCB in heat dissipation, it will be ideal choices for the products concerning high pressure and temperature.
Aluminum is a common mental that can be found in a variety of situation, and it can be mined and refined easily. These benefits make aluminum economical and effective in the numerous applications.
Aluminum is non-toxic and recyclable. Using aluminum PCBs help to maintain the health of our planet.
When it comes to manufacturing, handling and everyday using, aluminum based products provide higher strength and durability than other metal materials.
Surprisingly, with so many improvements in performance, aluminum is a light weigh mental, that add strength and durability without adding any additional weigh.
Applications of Aluminum PCBs
Telecommunications, including high-frequency amplifiers and filtering appliances
Power Supply, such as switching regulators and DC/AC converters
Automotive, including electronic regulators, lighting and power controllers
Computers, such as CPU boards, floppy drives and power devices
Power Modules, including converters, solid-state relays, power rectifiers, and bridges
Audio Devices, such as input and output amplifiers and power amplifiers
Office Automation, such as electric motors and drives
Consumer: Street lighting, Traffic control lighting, Interior building lights, Landscape lighting, and Camping gear.
Medical: Operating room lighting, Surgical lighting tools, High power scanning technology, and Power converters.
ABP Electronics Ltd is a leading provider of a wide range of printed circuit boards from China, including metal-base or metal core aluminum PCBs for the automotive, aerospace, and medical industries. Welcome to learn more about us from our web www.abp.net.cn, and get pricing and lead time via [email protected]
|Products Type||HF(High-Frequency)&(Radio Frequency) board, Impedance controlled board , HDI board ,
BGA& Fine Pitch board
|Solder Mask||Nanya&Taiyo ;LPI & Matt Red, green, yellow,white, blue,black.|
|Base material||FR4(Shengyi China、ITEQ, KB A+,HZ), HI-TG, FR06, Rogers,Taconic、Argon and so on|
|Finished Surface||Conventional HASL,Lead-free HASL,Falsh Gold, ENIG (Immersion Gold)OSP(Entek), Immersion Tin,ImmersionSilver,Hard Gold|
|Selective Surface Treatment||ENIG(immersion Gold)+OSP, ENIG(immersion Gold)+Gold Finger,Flash Gold +Gold Finger,
immersion Silver+ Gold Finger, Immersion Tin+Gold Finger
|Technical Specification||Minimum line width/gap:3.5/4mil(laser drill)
Minimum hole size:0.15mm(mechanical drill)/4mil(laser drill)
Minimum Annular Ring: 4mil
Max Copper thickness: 6OZ
Max Production size:900×1200mm
Board Thickness:D/S: 0.2-7.0mm, Multilayers:0.40-7.0mm,
Min Solder Mask Bridge:0.08mm
Aspect ratio: 15:1
Plugging Visa capability: 0.2-0.8mm
|Tolerance||Plated holes Tolerance:0.08mm(min±0.05)
Non-plated hole tolerance:0.05min(min+0/-0.05mm or +0.05/-0mm)
Functional test :
Insulating resistance : 50 ohms (mormality)
Peel off strength: 1.4N/mm
Thermal Stress test :2650c,20 seconds
Solder mask hardness:6H
E-Test voltage :500V+15/-0V 30S
Warp and Twist: 0.7% (semiconductor test board≤0.3% )