Aluminum substrate PCB production specifications

What is aluminum pcb?

It is a board in which an aluminum pcb manufacturer pastes a thin board is on an aluminum board.
Since it has excellent heat dissipation. It is ideal for circuits such as:

1. high-power LEDs
2. large-capacity power supply circuits, and
3. circuits that drive large-current loads, where conventional rigid boards will heat up.

Printed circuit board (PCB) is one of the two major parts manufacturing industries in the domestic electronics industry. With the vigorous development of the electronic information industry, the printed circuit board industry has grown faster.

PCB (according to a circuit design, the circuit components connected to the electric wiring pattern of the wiring will be formed. And then to design the specified machining, surface treatment, etc. On the electrical conductivity of the insulator body weight. As far as aluminum pcb manufacturer constitutes the circuit board before matching the electronic parts.

The function of this type of product is to use the electronic circuit formed by various electronic parts. As a circuit board to play the function of various electronic components to achieve the purpose of signal processing.

Pollution from aluminum pcb manufacturer process

Subtractive method is used in the process. Only after the through-hole plating. The full-plate copper plating method is used. That is, after the through-hole and the plate are uniformly plated to the required specifications by electroplating copper. The positive etching resist is transferred to resist corrosion.

A dry film resist is engraved to protect the copper surface where the lines and vias are to be formed. The copper surface that is not protected by the resist is etched and etched away. And finally, the resist is removed

aluminum substrate PCB production specifications- aluminum pcb manufacturer

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An aluminum pcb manufacturer must protect the aluminum base surface of the aluminum substrate with a protective film in advance during the PCB processing. Otherwise, some chemicals will attack the aluminum base surface.

Resulting in damage to the appearance. And the protective film is very easy to be injured and cause gaps. It requires that the entire PCB processing process must be inserted.

The hardness of the milling cutter used for the fiberboard gong board is relatively small. While the hardness of the milling cutter used for the aluminum substrate is large. The speed of production of fiberglass milling cutters is fast during processing. While the production of aluminum substrates is at least two-thirds slower.

The computer milled glass fiber board can only use the heat dissipation system of the machine to dissipate the heat. But aluminum pcb manufacturer must process the aluminum substrate with alcohol for the gong head.

What is aluminum pcb manufacturing and substrate proofing?

Aluminum substrate proofing tells you the production specifications of aluminum substrate pcb:

The aluminum base surface of the aluminum substrate must be protected with a protective film in advance during the PCB processing. Otherwise, some chemicals will attack the aluminum base surface, resulting in damage to the appearance.

And the protective film is very easy to be bruised and cause gaps. It requires from aluminum pcb manufacturer that the entire PCB processing process must be inserted.

The hardness of the milling cutter used for the fiberboard gong board is relatively small. While the hardness of the milling cutter used for the aluminum substrate is large. The speed of production of fiberglass milling cutters is fast during processing. While the production of aluminum substrates is at least two-thirds slower.

The computer milled glass fiber board can only use the heat dissipation system of the machine to dissipate the heat. But the aluminum substrate must be processed with alcohol for the gong head.

 

The advantages of aluminum pcb manufacturing compared with traditional FR-4 board:

 

1. aluminum pcb manufacturer provides good thermal conductivity.

The metal layer of the aluminum-based PCB board can quickly dissipate heat. Transfer the heat of the device, minimize the thermal resistance, and have good thermal conductivity.

2. More environmentally friendly 

The aluminum-based PCB board does not carry substances harmful to human health. And the environment, and is more environmentally friendly than the FR-4 board.

3. High durability. 

The FR-4 board may be rocked, bent, cracked, etc. During production and transportation; the ceramic substrate is also more fragile. The aluminum pcb manufacturer makes up for the shortcomings of the FR-4 board and the ceramic substrate, has a longer durability. And avoids board cracks caused by production and transportation.

 

The good heat dissipation function, insulation and durability of the aluminum-based PCB circuit board have laid its important position in the power hybrid IC. Aluminum substrates are widely used in industries such as:

• LED energy-saving lamps
• driving devices for automobiles
• computers and other equipment
• audio equipment and power systems.

aluminum pcb manufacturer price

The same PCB, FR4 is priced at 30 yuan. And the aluminum-based PCB is as high as 950 yuan.

A considerable part of the LED lights on the market are aluminum-based PCBs. And they do not feel much more expensive than other ordinary aluminum pcb manufacturer. This shows that the cost of aluminum-based PCBs is not too high. Am I being arbitrarily quoted by profiteers?

 

Realization of the technology of conductive hole plug hole by aluminum pcb manufacturer

For aluminum pcb manufacturer in pcb mounting, the requirements for via hole plug holes must be flat. And the convex and concave are plus or minus 1 mil. And there should be no red or tin on the edge of the via hole. The via hole contains tin beads in order to reach customers.

The requirements of the via hole plug hole process can be described as varied. The process flow is particularly long. The process control is difficult. Often there are oil drops during the hot air leveling and green oil solder resistance test. Oil explosion and other problems occur after curing.

According to the actual conditions of production:

• the various plug hole processes of PCB are summarized.
• And some comparison and elaboration are made in the process.

 

Note: The working principle of aluminum pcb manufacturer hot air leveling is to use hot air to remove the excess solder on the surface. And holes of the printed circuit board. The remaining solder evenly covers the pad. And the unresisted solder lines and surface packaging points. It is the surface treatment method of the printed circuit board.

Demand for special printed wiring boards with heat dissipation measures is expanding. Previously, it was limited to some markets for backlights for LCD TVs. Mainly for lighting fixtures equipped with light emitting diodes (LEDs). But recently there is a movement to adopt high-brightness LEDs for car headlights is accelerating.

What is aluminum pcb manufacturing heat dissipation?

For aluminum pcb manufacturer, attention is focused on a metal-based high heat dissipation substrate. In which a high thermal conductive resin is pasted with an aluminum or copper plate. Furthermore, there are many cases where power devices such as power MOSFETs are mounted. And some ceramic substrates have been considered as alternatives.

It seems that progress has been made in the development of high heat dissipation resin substrate materials with a thermal conductivity of 10 W / mK class. And the advantages such as:

• cost reduction compared to competing ceramic substrates are evaluated.

 

Recently, aluminum pcb manufacturer has focused attention on aluminum substrates due to the evolution of LEDs.
An aluminum substrate is a substrate that is made of:

• an aluminum material and
• copper foil and
• an insulating layer.

Aluminum substrates have the advantage of being cheaper to manufacture than other metals. Since the copper foil is pressure-bonded with epoxy resin. It also has excellent heat dissipation, charging and processability.

Although releasing heat is called heat dissipation. If aluminum pcb manufacturer neglect heat dissipation, the life of the element will be shortened. And various problems such as deterioration of solder will occur, so be careful.
Other than aluminum, there are copper-based boards based on copper and iron-based boards based on iron.

But both have problems. Copper substrates are expensive, and iron substrates are not available to many manufacturers.

When choosing a board, it is important to know the aluminum pcb manufacturer characteristics. If you compare the power LED mounted on an aluminum board with the power LED mounted on another board, you can clearly see the difference in heat dissipation.