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Understanding the definition of Aluminum Metal Core PCBs
Metal Core PCB means the core (base) material for PCB is the metal, not the normal FR4/CEM1-3, etc. and currently the most common metal used for MCPCB manufacturer are Aluminum, Copper and steel alloy. Aluminum has good heat transferring and dissipation ability, but yet relatively cheaper; copper has even better performance but relatively more expensive, and steel can be divided into normal steel and stainless steel. It more rigid than both aluminum and copper, but thermal conductivity is lower than them too. People will choose their own base/core material according to their different application.
Generally speaking, aluminum is the most economic option considering thermal conductivity, rigidness, and cost. Therefore, the base/core material of normal Metal Core PCB are made of aluminum. In our company, if not special request, or notes, the metal core refer will be aluminum, then MCPCB will means Aluminum Core PCB. If you need Copper Core PCB, Steel Core PCB, or Stainless steel core PCB, you should add special notes in drawing.
Sometimes people will use abbreviation [MCPCB", instead of the full name as Metal Core PCB, or Metal Core Printed Circuit Board. And also used different word refers the core/base, so you will also see different name of Metal Core PCB, such as Metal PCB, Metal Base PCB, Metal Backed PCB, Metal Clad PCB and Metal Core Board and so on.
MCPCBs are used instead of traditional FR4 or CEM3 PCBs because of the ability to efficiently dissipate heat away from the components. This is achieved by using a Thermally Conductive Dielectric Layer.
The main difference between a FR4 board and MCPCB is the thermal conductivity dielectric material in the MCPCB. This acts as a thermal bridge between the IC components and metal backing plate. Heat is conducted from the package through the metal core to an additional heat sink. On the FR4 board the heat remains stagnant if not transferred by a topical heatsink. According to Avago`s white paper (AV01-0615EN.pdf) a MCPCB with a 1W LED remained near an ambient of 25C, while the same 1W LED on a FR4 board reached 12C over ambient. LED PCB always be produced with Aluminum core, but sometimes steel core PCB also be used.
Aluminum Metal Core PCB Materials and Thickness
The metal core of the thermal PCB can be aluminum (aluminum core PCB), copper (copper core PCB or a heavy copper PCB) or a mixture of special alloys. The most common is an aluminum core PCB.
The thickness of metal cores in PCB base plates is typically 30 mil - 125 mil, but thicker and thinner plates are possible.
Advantages of MCPCB
1. heat dissipation
Some LEDs dissipate between 2-5W of heat and failures occur when the heat from a LED is not properly removed; a LED`s light output is reduced as well as degradation when the heat remains stagnant in the LED package. The purpose of a MCPCB is to efficiently remove the heat from all topical IC`s (not just LEDs). The aluminum base and thermally conductive dielectric layer act as bridges between the IC`s and heat sink. One single heat sink is mounted directly to the aluminum base eliminating the need for multiple heat sinks on top of the surface mounted components.
2. thermal expansion
Thermal expansion and contraction is the common nature of the substance, different CTE is different in thermal expansion. As its own characterics, aluminum and copper have unique advance than normal FR4, thermal conductivity can be 0.8~3.0 W/c.K.
3. dimensional stability
It is clear that the size of the metal-based printed circuit board more stable than insulating materials. The size change of 2.5 ~ 3.0% when Aluminum PCB and aluminum sandwich panels was heated from 30 ℃ to 140 ~ 150 ℃.
According to different location of metal core and trace layers of PCB, right now, we divide into five basic types:
Application of MCPCB LED lights Industrial power equipment Cars Power Audio OA Audio
High-current LED, Spotlight, high-current PCB High-power transistors, transistor arrays, push-pull or totem pole output circuit (to tem pole), solid-state relay, pulse motor driver, the engine Computing amplifiers (Operational amplifier for serro-motor), pole-changing device (Inverter) firing implement, power regulator, exchange converters, power controllers, variable optical system voltage regulator series, switching regulator, DC-DC converters input - output amplifier, balanced amplifier, pre-shield amplifier, audio amplifier, power amplifier Printer driver, large electronic display substrate, thermal print head input - output amplifier, balanced amplifier, pre-shield amplifier, audio amplifier, power amplifier Others Semiconductor thermal insulation board, IC arrays, resistor arrays, Ics carrier chip, heat sink, solar cell substrates, semiconductor refrigeration device
Application of MCPCB
Industrial power equipment
Image for Aluminum Metal Core PCB
JHYPCB: An Experienced Aluminum Metal Core PCB Manufacturer
JHYPCB's been manufacturing Aluminum Metal Core PCBs for 9+ years. Our full feature aluminum circuit boards,metal core PCB making capabilities and Free DFM Check allow you to get high-quality Aluminum Core PCBs done within budget. Our printed Aluminum PCBs are widely used for LED lighting, power equipment and automotive systems.
You May Ask:
What is fr4 TG?
High-TG PCBs High Temperature PCB fr4 Material. The Glass Transition Temperature (Tg) is one of the most important properties of any epoxy and is the temperature region where the polymer transitions from a hard, glassy material to a soft, rubbery material. ... FR4 is a code name for grade of Epoxy Glass material.
What is Mcpcb?
A Metal Core Printed Circuit Board (MCPCB) is a type of printed circuit board that contains a base metal material. The core is designed to redirect heat away from components which produce a substantial amount of heat. ... The metal core is composed of a metal plate with an appropriate thickness to dissipate heat.
What is metal core PCB?
Metal core PCB and standard FR-4 are commonly used circuit board materials in conjunction with Power LEDs. Henkel's Thermal Clad dielectric is a thin, thermally conductive layer bonded to an aluminum or copper substrate for heat dissipation.
Aluminum Metal Core PCB manufacturing
Why choose us?
JHY PCB offers flexible shipping methods for our customers, you may choose from one of the methods below.
After production and testing, your PCB orders will be sent to our shipping department. As the quick turn PCB manufacturer, JHY PCB shipping department will ship your PCB quickly without any pending.
JHY PCB 's Packing Way
Jinghongyi PCB (HK) Co., Limited is a professional manufacturer of high-quality PCB. JHY PCB specializes in quick turn PCB prototypes, small-medium volume PCB. Established in 2011, located in Baoan District, Shenzhen, China, with more than 500 experienced employees, we're able to achieve monthly output 40000 square meters.
PCB Manufacturing Services
As one of leading printed circuit board manufacturers based in China, JHYPCB has been offering international companies of all sizes with high-quality PCB prototype to production services at fair price for 8 years. To make professional and advanced circuit boards, we're committed to adhering to the strictest standards during PCB manufacturing process, we're fully compliant with the ISO 9001:2008 quality management system.
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