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Led Circuit Board Has A Good Thermal Conductivity

Shenzhen Inno Circuit Co.,Ltd | Updated: Aug 17, 2017

Led the heat problem is the LED manufacturers the most troublesome problem, but you can use led circuit board, because the aluminum thermal conductivity is high, good heat dissipation, LED PCB can effectively export the internal heat. Led circuit board is a unique metal-based CCL, with good thermal conductivity, electrical insulation properties and mechanical processing performance. Design should also try to PCB near the aluminum base, thereby reducing the potting part of the thermal resistance generated.

First, the characteristics of led circuit board

1. Using surface mount technology (SMT);

2. In the circuit design of the thermal diffusion of the extremely effective treatment;

3. Reduce the product operating temperature, LED PCB improve product power density and reliability, extend product life;

4. Reduce product size, reduce hardware and assembly costs;

5. Replace the fragile ceramic substrate, get better mechanical durability.

Second, led the structure of the circuit board

Aluminum-based CCL is a metal circuit board material, from the copper foil, LED PCB thermal insulation layer and metal substrate composition, its structure is divided into three layers:

Cireuitl.Layer Line layer: the equivalent of ordinary PCB CCL, LED PCB line copper foil thickness loz to 10oz.

DielcctricLayer Insulation: Insulation is a layer of low thermal resistance thermal insulation material.

BaseLayer Base: is a metal substrate, usually aluminum or can choose copper. Aluminum-based CCL and the traditional epoxy glass cloth laminates and so on.

Circuit layers (ie, copper foil) are usually etched to form a printed circuit, so that the components of the components connected to each other, under normal circumstances, LED PCB the circuit layer requires a large current carrying capacity, which should use thick copper foil, the thickness of 35μm ~ 280μm; thermal insulation layer is the core technology of the led circuit board, it is generally made of special ceramic filled with special polymer, thermal resistance, excellent viscoelastic properties, with the ability to heat aging, LED PCB able to withstand mechanical and thermal stress The

High-performance led circuit board thermal insulation layer is the use of this technology, it has a very good thermal conductivity and high strength electrical insulation properties; metal substrate is a support circuit board supporting components, requiring a high thermal conductivity, the general Is aluminum, LED PCB can also use copper (which copper plate can provide better thermal conductivity), suitable for drilling, punching and cutting and other conventional machining. PCB material compared with other materials have incomparable advantages. Suitable for power components surface mount SMT art. No need for radiator, greatly reduced size, excellent heat dissipation, LED PCB good insulation and mechanical properties.

Third, the use of led circuit board:

Uses: Power mixed IC (HIC).

1. Audio equipment: input and output amplifiers, balanced amplifiers, audio amplifiers, preamplifiers, power amplifiers and so on.

2. Power supply: switch regulator `DC / AC converter` SW regulator and so on.

3. Communication electronic equipment: high-frequency amplifier `` filter electrical circuit.

4. Office automation equipment: motor drives and so on.

5. Automotive: electronic regulator `ignition` power controller and so on.

6. Computer: CPU board `disk drive` power supply device.

7. Power module: converter `solid relay` rectifier bridge and so on.