SMD LED packaging technology is the first phosphor and epoxy resin configuration, made of a mold, and then with a good phosphor made of epoxy resin cake, and paste on the chip, Filled with epoxy resin, and then made of SMD package LED. On the market more common size 50 (mm) × 50 (mm) of the SMD LED internal package has three LED chips, epitaxial out of the six pins, will be soldered to the PCB circuit board appearance, SMD LED so direct use Thermal insulation stickers attached to the appearance of the radiator, and then make heat dissipation has been greatly improved, SMD LED making the reliability greatly improved, light failure also smaller. On the high-power LED main selection of high thermal conductivity ceramic composite substrate, SMD LED main features are:
(1) high thermal conductivity low thermal resistance;
(2) Thermal expansion coefficient matching (TCE: 6.2);
(4) corrosion and yellowing;
(5) fit the ROHS standard;
(6) high temperature.
LED chip market is now highly sought after, in addition to the country's promotion of energy-saving, careful calculation, you can conclude that the top ten advantages, creating LED market hot:
First, the small size: SMD LED is basically a very small chip is encapsulated in the epoxy resin inside, very small, easy to design a variety of light source equipment.
Second, the pure color: SMD LED light color pure, soft, no glare, both as decorative purposes, but also for lighting purposes.
Third, low heat: single chip LED power is very low, generally 0.04 ~ 0.08W, SMD LED and high luminous efficiency, so the heat is not high. So LED lamps can be used as a decorative tank in the aquarium, and will not produce a lot of heat caused by water temperature rise, affecting the growth of ornamental fish.
Fourth, energy saving: high luminous efficiency, low heat caused by LED components of the super energy, LED lamps relative to the traditional lighting and decorative lighting, LED lighting power several times lower, but the effect is also much higher.
5, low radiation: no ultraviolet and infrared spectrum, SMD LED neither heat nor radiation, glare small, cold light source, you can safely touch, are typical of the green lighting
Sixth, environmental protection: LED soft light bar composition materials, whether it is LED or FPC, the material is the use of environmentally friendly materials, are recyclable, SMD LED not because of the large number of use caused by environmental pollution and damage.
Seven, low power requirements: SMD LED required voltage is very low, SMD LED you can use a small number of light source with a linear constant current driver can be a perfect LED efficient and stable work.
8, the reaction speed: patch LED without warm light time, sensitivity of about 10 ^ -9 seconds, so that it can be used in a variety of high-precision test equipment.
Nine, rugged: LED is completely encapsulated in the epoxy resin inside, SMD LED than the bulb and fluorescent tubes are solid. There is no loose part of the lamp body, making the LED is not easy to damage.
10, long life: LED lamps of the normal life is 5 to 10 million hours, 24 hours a day non-stop work, its life are almost nearly 10 years. Therefore, LED lamp life is several times the traditional lamps and lanterns.
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