Audio power amplifier Aluminum mcpcb aplication

Audio power amplifier Aluminum mcpcb aplication
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.

Single Layer Metal Core PCB
A simple layer single sided MCPCB consists of a metal base (usually aluminum, or copper alloy), Dielectric (non-conducting) Layer, Copper Circuit Layer, IC components and solder mask.
The prepreg dielectric provides excellent heat transfer from the foil and components to the base plate, while maintaining excellent electrical isolation. The base aluminum/copper plate gives the single-sided substrate mechanical integrity, and distributes and transfers the heat to a heat sink, mounting surface or directly to the ambient air.
The Single-Layer MCPCB can be used with surface mount and chip & wire components, and provides much lower thermal resistance than FR4 PWB. The metal core provides lower cost than ceramic substrates, and allows much larger areas than ceramic substrates.

Double Layers Metal Core PCB

Double layers MCPCB is consisting of two layers of copper conductor, put them on same side of metal core (usually aluminum, copper or iron alloy). The metal base is on the bottom of whole MCPCB, which is different from double sided MCPCB(the two copper layers were put on the each side of metal core respectively), and you can only populate SMD on top side.
Different with Single layer MCPCB, 2 layers MCPCB requires an additional pressing step to laminate the imaged thermal conductive laminate and metal core (also known as metal base) together.
Compared with normal FR4, this sturcture need more technology and experience on laminating of two layers together with metal core.
The processing steps of the MCPCB with the metal base embedded in the PCB are comparatively complex as hole plugging is required after primary drilling on the metal base in order to isolate it from the circuitry.

Metal core printed circuit board PCB (also MCPCB) is kind of PCB with metal base material instead of woven glass FR4, FR3 or others. There is single sided, double sided, multilayer and COB. The common used metal core is aluminum, copper and alloy. Aluminum is the most frequently used among them due to its good heat transfer ability, dissipation ability and relatively cheaper cost than copper, although which may has a better performance.

MCPCB Prototype
To correctly cut the metal core layer without breaking the insulation,
Accuracy in depth control when cutting is essential.
When counter is routing an aluminum base, a high torque spindle motor is used.
A MCPCB prototype is produced by using machines with precisely driven
Z-axis, an accurate and ruggedized mechanism, and a flat working table.

Types of MCPCB (Metal core PCB)
Metal core PCB are sorted according to the location of the metal core and the trace layers of the PCB.
There are 5 main types of metal core PCB and these are
-Single Layer MCPCB (one trace layer on one side),
-COB LED PCB (one trace layer),
-Double Layers MCPCB (two trace layers on one side),
-Double Sided MCPCB (two trace layers on both sides) and
-Multi Layers MCPCB (More than two trace layers on every board).

Key Specifications/Special Features:
Number of layers: 1
Laminate material: copper
Surface finish: OSP
Copper thickness: 2 oz
Board thickness: 2.0mm (0.078”)
Board size:

Color of mask: white
Flammability: UL 94V-0
Workmanship: compliance with IPC-A-600 and IPC-6012 class II

Thermal conductivity:

Aluminum base copper clad laminate have excellent flame retardant,high mechanical strength,dimensional stability etc. Especially it has very good heat sink,electromagnetic shielding and solder float.

It's widely used for the modifier and sparker on fire for motorcycle and mobile ,power LED,sound box power supply module and acoustics shielding system etc.

MCPCB Use in the high efficiency led lamp, PAR lamp and so on .

Capability

1: Layer:1-16

2: Board finished thickness:0.20mm-6.0mm

3: Material:FR-4,CEM-1 .CEM-3. High TG,FR4 Halogen Free. Rogers, aluminum based

4: Max .finished board size:23.6inch*47inch (600mm*1200mm) Min. drilled hole size:10mil (0.25mm) Min. Line width:3.5mil (0.089mm) Min. Line spacing:3.5mil (0.089mm)

What is MCPCB?

MCPCB: Metal core print circuit board.
Nowadays, most of metal core PCBs are Aluminum PCBs due to the Aluminum are cheap and its useful characteristic, see below:

ØHave a nice heat-conducting property, Good electrical insulation properties and machining property
ØIn a same condition, compare with Fr4 material, the Aluminum PCB can carry a more higher current, and pressure can up to 4500V, Coefficient of thermal conductivity is greater than 2.0.
ØLower the operation temperature, improve the Product power density and reliability so that lengthen the product using life.
ØHelp reduce the size of product so that cut down the product cost and assembly cost.
ØCan replace the brittle ceramic PCB, Get a better mechanical endurance

5: Surface finish treatment:HASL/HASL Lead free , HAL chemical tin, chemical gold, immersion silver/gold, osp, gold plating

Metal Core PCB MCPCB is kind of PCB with metal base material instead of woven glass (FR4), cotton paper (FR3) or others. It is with single layer metal core PCB, double layers MCPCB, double sided MCPCB, COB MCPCB and multilayer MCPCB. The common used metal core is aluminum, copper and alloy. Aluminum is the most frequently used among them due to its good heat transfer ability, dissipation ability and relatively cheaper cost than copper, although which may has a better performance.

Single Layer Metal Core PCB MCPCB consists of a metal base (aluminum or copper alloy), dielectric layer, and copper conductor layer. The single layer MCPCB can be used with surface mount and chip & wire components, and provides much lower thermal resistance than FR4 PCB. The metal core provides lower cost and allows much larger areas than ceramic substrates.

Metal Core PCB is used to replace 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 prepreg dielectric provides excellent heat transfer from the foil and components to the base plate, while maintaining excellent electrical isolation. The base aluminum/copper plate gives the single-sided substrate mechanical integrity, and distributes and transfers the heat to a heat sink, mounting surface or directly to the ambient air.

6: Copper thickness:0.5-5.0 OZ

7: Solder mask color: green/yellow/black/whiter/blue/red

The power device surface mounting on circuit layer, it is ideally suited for the mounting of high power light emitting diodes (LEDs) easily dissipating the heat generated by power devices.

Aluminum based PCB used:

IMS PCB is a special metal CCL, which has good thermal conductivity, electrical insulation and mechanical processing performance, the circuit design of the thermal diffusion has a very effective performance, which can reduce the operating temperature of the product, increase the power density and reliability, extend the product life, smaller size, lower hardware and assembly costs.
Single layer metal core PCB
Simple layer single sided MCPCB consists of metal base (usually aluminum, or copper alloy)
Dielectric (non-conducting) layer, copper circuit layer, IC components and solder mask
Prepare dielectric provides excellent heat transfer from foil and components to base plate, while maintaining excellent electrical isolation
Base aluminum/copper plate gives single-sided substrate mechanical integrity and distributes and transfers heat to a heat sink, mounting surface or directly to ambient air
Single-layer MCPCB can be used with surface mount and chip, wire components and provides much lower thermal resistance than FR4 PWB
Metal core provides lower cost than ceramic substrates and allows much larger areas than ceramic substrates

Applications:

LED lights: high-current LED, spotlight, high-current PCB
Industrial power equipment: high-power transistors, transistor arrays, push-pull or totem pole output circuit (totem pole), solid-state relay, pulse motor driver, engine computing amplifiers (operational amplifier for servo-motor), pole-changing device (inverter)
Cars: firing implement, power regulator, exchange converters, power controllers and variable optical system
Power: voltage regulator series, switching regulator, DC-DC converters
OA: printer driver, large electronic display substrate, thermal print head
Audio: input-output amplifier, balanced amplifier, pre-shield amplifier, audio amplifier and power amplifier
Others: semiconductor thermal insulation board, IC arrays, resistor arrays, ICS carrier chip, heat sink, solar cell substrates and semiconductor refrigeration device

MCPCB Benefits VS FR4 PCB
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.
Flatness maintained in all 3 layers
High Heat Dissipation
High density of components
Reduced PCB size / Small footprint
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 ℃.
Components operate at lower temperatures
Durable
Higher Watt Density
Longer component life
Less hardware (topical heat sinks, screws, clips, etc)
Lower Manufacturing Cost
Selective dielectric removal can be used to expose inner-layer and or the baseplate for component attachment to these layers which also reduces thermal resistance.

Chip On Board Metal Core CB
MCPCB is used in thermoelectric separation application Th e Micro-chip or die is directly in touch with the metal core where the heat dissipate. And electrically interconnect the trace of circuit board (wire bonding) so thermal conductivity of COB MCPCB is more than 200 W/m.k.

Metal Core PCB manufacturing
Metal Core PCB(MCPCB) is that use metal as base material to fabricate PCB, we can use aluminum base, copper base and steel base to manufacture PCB but usually most MCPCB customes just need Aluminum core PCB and which are always used for LED, so we will show the Aluminum core PCB information but you can contact us for copper base PCB and steel base PCB if you really need them, we are always here for you.

Aluminum Core PCB
What's Aluminum Core PCB?
Aluminum plate with good heat dissipation function is a kind of metal base copper-clad r.p. panel and general single panel composed of three layers structure, respectively is the circuit layer (copper foil), insulation and metal base. For high-end use, also have a design for the panel for circuit layer, insulating layer, aluminum structure, insulation, circuit layer. Few applications for sandwich plate, can by ordinary sandwich plate with insulation layer, aluminum joint. LED aluminum plate is PCB, is also the meaning of printed circuit board, just PCB material is aluminium alloy, we used the general circuit board material is glass fiber, but because the LED heat is larger, so the LED lamps and lanterns with the circuit board is commonly aluminum plate, can fast heat conduction, other equipment or electrical circuit board or glass fiber board!

Aluminum PCB Structure
Circuit layer
Circuit layer (generally using electrolytic copper foil) formed after etching printed circuit, used to implement the assembly and connection of the device. Compared with the traditional FR - 4, using the same thickness, the same line width, the aluminum plate can support higher current.

Single sided metal core printed circuit board consists of a metal base (aluminum or copper alloy), dielectric layer, and copper conductor layer. The single layer MCPCB can be used with surface mount and chip & wire components. It provides much lower thermal resistance than FR4 PCB. And the metal core provides lower cost and allows much larger areas than ceramic substrates.

Metal Core PCB is used to replace 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 prepreg dielectric provides excellent heat transfer from the foil and components to the base plate, while maintaining excellent electrical isolation. The base aluminum or copper plate gives the single-sided substrate mechanical integrity, and distributes and transfers the heat to a heat sink, mounting surface or directly to the ambient air.

Aluminum based PCB, also named Aluminium PCB, metal clad(MCPCB) PCB, insulated metal substrate(IMS or IMPCB) PCB, thermally conductive PCBs, etc. It is generally including single layer, double layer and multi layer.
Operating theory:
The power device surface mounting on circuit layer, it is ideally suited for the mounting of high power light emitting diodes (LEDs) easily dissipating the heat generated by power devices.
Aluminum based PCB used:
Aluminum base PCB used:
1. Audio devices: input, output amplifiers, balanced amplifiers, audio amplifier, preamplifier, power amplifier.etc.
2. Power Supply: Switching Regulator,DC / AC converter,SW regulator.
3. Telecommunications electronic equipment: high-frequency electric amplifiers ,Filtering appliance ,Transmitter circuit,etc.
4. Office automation equipment: Electric motor, drives.etc
5. Automotive: Electronic regulator, Ignition, Power Controllers.etc
6. Computer: CPU board ,Floppy drive ,Power Device.etc
7. Power Modules:Converter, solid-state relay ,Power Rectifier bridges,etc
8. Lamps Lighting: with the promotion of energy-saving lamps, Aluminum base PCB , used on LED lights ,begin large-scale application.

Double Sided Metal Core PCB

It also has same two layers of copper conductor like Double layers MCPCB, but the metal core is in the middle of two conductor, so there're conductors (trace) on both sides of metal core, and were connected to each other by Vias. So we named it "Double sided MCPCB", and you can populated SMD on both top and bottom.
Different with Single layer MCPCB, double sided MCPCB also requires an additional pressing step to laminate the imaged thermal conductive laminate and metal core (also known as metal base) together. But sometimes, some raw Metal Clad material vendor will supply board material which already laminated.
Compared with normal FR4, this sturcture need more technology and experience on laminating of two layers together with metal core.

Multi Layers Metal Core PCB

Just like FR4 PCB, we can also make boards with more than 2 layers of traces and we named it "Multi Layers MCPCB". The structure is similar with FR4 Multi Layers, but it much more complex to make.
You can populated more components on the boards, put signal and ground layer into seperated layers, to achieve better performance in electrical performance.
Compared with normal FR4, this sturcture need more technology and experience on laminating of more than two layers together with metal core and the cost is much higher than 2 layers MCPCBor double sided MCPCB.

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.

Express PCB		Rigid PCB Rapid Prototype,24 hours
Fr4 PCB		prototype Lower to 15USD !
Rapid Prototype		Fr4 Rigid PCB Rapid Prototype China,

MCPCB		MCPCB Manufacturer China, Shenzhen
Aluminum PCB:		Aluminum Metal Core PCB manufacturing, Fabrication
Aluminum PCB:		single side, double side MCPCB, 0.5-5mm or more

Rogers 4350B		Rogers 4350,Rogers 4003 Manufacturing
Rogers 4350B		Rogers 4350B,4003C PCB Manufacturer
Ro4350B		Rogers High Frequency PCB Manufaturing China

Turnkey Services		Turnkey PCB Assembly Services,
Turnkey services		Print circuit board Manufacturing, Turnkey Services
Turnkey Assembly		Through Hole PCB components wave soldering Assembly

Audio power amplifier Aluminum mcpcb aplication

PCB Supplier Shenzhen, China, PCB Manufacturer, Turnkey services

Express PCB

Rigid PCB Rapid Prototype,24 hours

MCPCB

MCPCB Manufacturer China, Shenzhen

Rogers 4350B

Rogers 4350,Rogers 4003 Manufacturing

Turnkey Services

Turnkey PCB Assembly Services,

Audio power amplifier Aluminum mcpcb aplication