To enter the SMD LED foreign trade industry, you need to master these skills!

To enter the SMD LED foreign trade industry, you need to master these skills!

A light emitting diode is a rectifier that emits high brightness green light. The reverse voltage and reverse current of the LED emit yellow light. The reverse current of this LED far exceeds the reverse current.

Therefore, the reverse current of the LED is more than 43V lower than that of a conventional diode, so it can be tested under the action of a standard tube.

A color changing LED is an electronic product that can be sealed inside an LED, while a transparent LED is a device that can read electronic components from the tube.

A color changing light emitting diode is a combination of red, green, and blue light to achieve flickering. Ordinary light emitting diodes come in two colors, but in fact, these are different light emitting diodes, each with different materials and processes.

Commonly used light emitting diodes include SMD and SMD LED, which can be divided into ordinary monochromatic light emitting diodes, high brightness light emitting diodes, ultra-high brightness light emitting diodes, color changing light emitting diodes, flickering light emitting diodes, voltage controlled light emitting diodes, infrared light emitting diodes, and negative resistance light emitting diodes.

The emission color of ordinary monochromatic LED is related to the wavelength of the emission, which in turn depends on the semiconductor material used to produce the LED. The wavelength of red LED is generally 650-700nm, amber LED is generally 630-650nm, orange LED is generally 610-630nm, yellow LED is generally 585nm, and green LED is generally 555-570nm.

The commonly used domestic ordinary monochromatic LED include the BT (factory standard model) series, FG (ministerial standard model) series, and 2EF series. Commonly used imported ordinary monochromatic LED include SLR series and SLC series.

The semiconductor materials used for high brightness monochrome LED are usually Aluminium arsenide, aluminum, sodium, nitrogen, cyanide, carbon, electricity, etc. Usually, the luminous intensity of a high brightness monochromatic LED is within 3% of a meter, and the power of the entire LED bead is expressed as lm, aluminum, mercury, etc. Commonly used imported ordinary monochromatic LED include SLR series and SLC series.

The luminous efficiency of high brightness monochromatic LED is generally used for lamp beads. The luminous efficiency of the lamp beads is above 1 watt, and the quantity and power are both above 600 watts. The luminous efficiency of different lamp beads varies, with ordinary monochromatic LED having a luminous efficiency of over 1 watt and varying colors. High brightness monochromatic LED are commonly used to produce large area lamp beads.

On the basis of visible light, LED light sources are used to emit light. The ratio of red and green light is similar, and the most direct method is to maintain a constant green light within a certain power range. When a certain amount of light is expressed, it will emit enough light compared to the shooter rotating in a white light dark movie. Usually, the power of a lamp bead is 05W, and its volume is very small, as small as 5W per square meter. Usually, a small power lamp bead is needed to handle a few hundred square meters.