Application of LED aluminum PCB
The advent of LED PCB products has opened up the development of the heat dissipation application industry. Due to the heat dissipation characteristics of LED PCBs, and the aluminum substrate has the advantages of high heat dissipation, low thermal resistance, long life, and withstand voltage, with the improvement of production technology and equipment, product prices have accelerated and rationalized , And then expand the application areas of the LED industry, such as indicator aluminum substrates for home appliances, aluminum substrates for automobile lights, aluminum substrates for street lights, and large outdoor billboards. The recent successful development of LED PCB will also serve as indoor lighting and outdoor lighting products, which will broaden the market for the LED industry in the future.
In the next five years, my country will also promote LED PCB as a major industry, and the Ministry of Science and Technology has also approved Shenzhen, Jiangsu, Zhejiang, Dalian, and Chongqing as LED PCB industrialization bases. According to the estimated goals of these five industrial bases, by 2012, the output value of the entire Chinese LED industry will exceed 200 billion yuan. Driven by the emergence of emerging application markets, the L LED PCB market has rapidly increased in recent years. LED PCB refers to a very wide range of finished products, including: high-power, LED street lights, spotlights, wall lights, underground lights, LED fluorescent lights, etc. LED aluminum substrates include LED aluminum substrates, LED copper substrates and LED iron substrates.
LED PCB features
1. Using surface mount technology (SMT);
2. Extremely effective treatment of thermal diffusion in the circuit design scheme;
3. Reduce product operating temperature, improve product power density and reliability, and extend product service life;
4. Reduce product volume, reduce hardware and assembly costs;
5. Replace fragile ceramic substrates to obtain better mechanical durability.
LED aluminum substrate is suitable for: Products are widely used in communications, electricity, electronics, medical equipment, mechanical equipment, lighting and other fields.
Overall analysis of the LED PCB industry
LED PCB product projects cover the entire industry of lighting products, such as commercial lighting and indoor lighting. On the whole, LED PCB will continue to maintain rapid development in the next few years, and the export value will increase steadily, but the export growth rate will decline. Domestic sales have ushered in a period of rapid growth due to sustained economic development.
However, the rapid development of China's LED PCB industry in the past five years has created fierce competition today. Due to LED lighting related technology and heat dissipation performance, the development of LED in the domestic market is slow, and most of the LED lighting is used for export. This aspect continues to give space and time for the development of LED aluminum substrates. Under the vigorous guidance of the country in the future, LED aluminum substrate technology will become more and more perfect, and domestic demand will increase.
LED PCB thermal conductivity
The thermal conductivity of the LED PCB is related to the insulating layer in the middle of the aluminum substrate (usually PP, and now there are thermally conductive adhesives, etc.). It is one of the three major criteria for measuring the quality of the aluminum substrate (the thermal resistance and the withstand voltage are different Two properties). The thermal conductivity of the aluminum substrate can be tested by a test instrument after the sheet is pressed. The current high thermal conductivity is generally ceramic, copper, etc., but due to cost considerations, the current mainstream in the market is the aluminum substrate, which corresponds to The thermal conductivity of the aluminum substrate is a parameter that everyone cares about. The higher the thermal conductivity, the better the performance.
LED PCB classification
LED PCB classification includes fluorescent lamp aluminum substrate, street lamp aluminum substrate, downlight aluminum substrate, wall lamp aluminum substrate, spotlight aluminum substrate, energy-saving lamp aluminum substrate, induction lamp aluminum substrate, ceiling lamp aluminum substrate, wall washer aluminum substrate, bulb lamp Aluminum substrate, tunnel light aluminum substrate, floodlight aluminum substrate, floodlight aluminum substrate, high-power aluminum substrate, low-power aluminum substrate, guardrail tube aluminum substrate, neon aluminum substrate, corn lamp aluminum substrate, candle light aluminum substrate, suction Ceiling lamp aluminum substrate, kitchen lamp aluminum substrate, corridor lamp aluminum substrate, underground lamp aluminum substrate, bold lamp aluminum substrate, high bay lamp aluminum substrate, bridge lamp aluminum substrate, floor tile lamp aluminum substrate, staircase lamp aluminum substrate.
