LED lamp beads common sense LED lamp advantages and advantages and disadvantages
Voltage: LED uses low-voltage power supply, the power supply voltage is between 1.8-3.6V, depending on the product, so it is a safer power supply than using high-voltage power supply, especially suitable for public places. 2. Efficacy: Compared with incandescent lamps with the same light effect, the energy consumption is reduced by 80% 3. Stability: In theory, it can be lit for 100,000 hours. 4. Light attenuation: With the advancement of technology, the light attenuation is getting smaller and smaller. Now the light decay of ordinary LED lights within one thousand hours can be truly controlled within 5%, even after more than one thousand hours, the light decay is very small. 5. Environmental protection: no radiation, no pollution, truly environmentally friendly materials. LED products are generally exempt from inspection when exporting
Common sense of LED chip size:
According to the shape classification, the chip is generally divided into round and square slices. Among them, the wafer is relatively low-grade and the performance is not stable enough. Our company generally does not use the LED produced by the wafer; the square wafer is generally measured by the size, such as 12mil (1 mil=0.0254 square millimeter). Generally speaking, the larger the chip size of the same brand of chips, the higher the brightness. The LED lamp beads that our company often uses, the red light and yellow light are generally 9-12 mils, and the white, blue and green lights are generally 12-14 mils. This is also a commonly used chip on the market. If a larger chip is used, the brightness can be improved. However, the price of the chip has increased substantially, which is why the size of the chip is rarely used.
Common sense of LED color:
The different colors of LEDs are determined by the chips of different wavelengths. For example, the general wavelength of the red light chip is 620-630nm (nanometer), the general wavelength of the green light chip is 527nm, the wavelength of the blue light chip is generally 470nm, and the yellow light chip is generally 585nm, the white light LED also uses a blue chip, just add a proper amount of phosphor to the blue chip to emit white light.
According to the size of the power; it can be divided into low power and high power (in the industry, lamps above 0.5W are generally called high-power lamps). According to the shape: it can be divided into in-line type and patch type. The straw hat LED can be divided into F3 (the diameter of the lamp holder is 3mm) and F5 (the diameter of the lamp holder is 5mm) according to the size of the lamp holder; or according to the shape of the lamp holder, it can be subdivided into no edge, thin edge, thick edge, and round head; according to the lamp holder is transparent It can be divided into transparent and foggy. . . . . . More subdivision methods are not listed, the above list is only based on our company’s frequent use. Piranha LED can also be divided into F3 according to the size of the lamp holder, F5 according to the shape of the lamp holder is divided into round head (that is, the commonly used piranha lamp), flat head (this kind of head is very special, its light-emitting angle is close to 180 degrees, generally used in Where astigmatism is required) Low-power SMD LEDs can be divided into 0805, 1206, 2835, 3020, 3528, 5050 or 5060 according to their dimensions (the difference between 5050 and 5060 is very small, and it is difficult to distinguish with the naked eye. For customers who are not professional, they can follow His customary name), our company often uses 2835, 3528, 5050. High-power LEDs are generally distinguished by power, the common ones are 0.5W, 1W, 3W, 5W, and our company’s commonly used is 1W