What is Aluminum substrate

Aluminum substrate is a kind of metal copper-clad plate with good heat dissipation, which is mostly used to make LED lights, and is a high-power power electronic circuit structure.

What does an aluminum substrate look like? Let's take a look at it below.

Aluminum substrate sheet generally includes three layers of structure, respectively for the circuit (copper foil), insulation layer and metal bottom plate;

The double panel structure includes circuit layer, insulating thermal conductivity layer, aluminum base, insulating thermal conductivity layer and circuit layer.

There is also a double-sided aluminum substrate, which is made of glass fiber plate mixed with aluminum base, the bottom layer is aluminum base, the core plate is aluminum, the top and bottom line.

Application of aluminum substrate:

Audio device: input and output amplification, balance amplification, audio amplification, pre-amplification, power amplifier, etc.

Power supply device: switch regulator, DC / AC converter, SW adjustment, etc.

Communication electronic equipment: high frequency supercharger, filter appliances, signal transmission circuit.

OA equipment: motor drive, etc.

Automobile: electronic governor, ignition device, power controller, etc.

Power supply module: converter, solid relay, rectifier bridge, etc.

Lighting: Aluminum substrates used for LED lights have also been used on a large scale.

Specification for aluminum substrate:

Aluminum substrate is often used in power devices, so the copper foil is relatively thick.

The aluminum base surface is protected with a protective film in advance, otherwise, the chemical drug will erode, resulting in appearance damage.

The milling cutter used to produce aluminum substrate is hard and the speed is at least two thirds slower.

Processing of aluminum substrate must be combined with alcohol and heat dissipation for the gong head.

Difficulties in making process of aluminum substrate:

Using machining aluminum substrate, no burr will be allowed in the hole after drilling, otherwise the pressure test will be affected.

In the whole aluminum substrate production process does not wipe the flower aluminum base surface, touch by hand, or by a certain chemical will produce surface discoloration, black.

When the aluminum substrate is over high voltage test, the aluminum substrate of communication power supply requires 100% high voltage test. The plate surface dirt, holes and aluminum base edge burr, line saw tooth or touch any insulation layer will cause the high voltage resistance test fire, leakage, breakdown.