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Why do LED lighting fixtures use aluminum substrates?

addDate:2018-07-26     From:YiLiHua    Keywords:YiLiHua     Views:1059
Aluminum substrate as a high-end metal substrate (MCPCB), determine it is recognized by the market is an important factor, good thermal conductivity, good thermal conductivity, why LED lighting with good thermal conductivity of metal materials to do circuit boards, it is known that LED light-emitting diodes in the work will generate a lot of heat, if the heat is not extremely conductive is fatal. Because of the great influence on the light fading of LED lamp beads, we must choose the aluminum substrate with thermal conductivity when we choose PCB. Metal substrate (MCPCB) has good heat dissipation and heat transfer ability, which is heat conduction professionally. This is why aluminum substrate is used in LED lamps.

Next, we explain the structure of aluminum substrate and the heat transfer principle of aluminum substrate in the form of picture and text.

First, the structure of aluminum substrate is divided into three layers, copper clad layer, insulation layer and metal base.

Structural picture of aluminum substrate

Secondly, we will see the thermal conductivity test of aluminum substrate.

It can be seen that the structure and heat conduction principle of aluminum substrate, and the testing conditions of aluminum substrate.

Characteristics of aluminum substrate

Adopt surface mount technology (SMT);

In the design of the circuit, thermal diffusion is handled effectively.

Reduce the running temperature of products, increase the power density and reliability of products, and extend the service life of products.

Reduce the volume of products and reduce the cost of hardware and assembly.

Replace the fragile ceramic substrate for better mechanical durability.

PCB aluminum substrate uses:

Purpose: power mixing IC (HIC).

1.LED lighting products

2. Audio equipment: input, output amplifier, balance amplifier, audio amplifier, preamplifier, power amplifier, etc.

3. power supply equipment: switch regulator `DC/AC converter, `SW regulator and so on.

4. communication and electronic equipment: high frequency amplifier, filter appliance, transmitting circuit.

5. office automation equipment: motor driver and so on.

6. car: electronic regulator, igniter, power supply controller, etc.

7. computer: CPU board, floppy disk drive, power supply device, etc.

8. power module: converter, solid state relay, rectifier bridge, etc.
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