Do you know what 1ed lamp beads are? All LED lights need to use lamp beads, and LED lights without lamp beads cannot be lit. A lamp bead is a luminescent material installed in a light bulb, which belongs to a diode and is a semiconductor material. The lamp beads of 1ed lamps have very good advantages. They are a kind of filament with a long life and bright colors. There are many types of 1ed lamp beads, so there are many choices. Many people do not know how to choose when replacing 1ed lamp beads. Now let's take a look at how to choose 1ed lamp beads?
1. Selection skills
1. Brightness The brightness of the LED is different and the price is different. The LEDs used for LED lamps should meet the laser class I standard.
2. Antistatic ability LEDs with strong antistatic ability have a long life and are therefore expensive. Usually LEDs with anti-static greater than 700V can be used for LED lighting.
3. Wavelength LEDs with the same wavelength have the same color. If the same color is required, the price will be high. It is difficult for manufacturers without LED spectrophotometers to produce products with pure color.
4. Leakage current LED is a one-way conductive luminous body. If there is a reverse current, it is called leakage current. LEDs with large leakage current have short life and low price.
5. Lighting angle LEDs with different uses have different light-emitting angles. Special lighting angle, higher price. Such as the full diffusion angle, the price is higher.
6. Lifespan The key to different quality is lifespan, which is determined by light decay. Low light decay, long life, long life and high price.
7. Chip The light-emitting body of LED is a chip, and the price of different chips varies greatly. Chips in Japan and the United States are more expensive. Generally, the prices of chips in Taiwan and China are lower than those in Japan and the United States.
8. Chip size The size of the chip is represented by the length of the side. The quality of the large chip LED is better than that of the small chip. The price is proportional to the wafer size.
9. Colloid The colloid of ordinary LEDs is generally epoxy resin. LEDs with anti-ultraviolet and fire-retardant agents are more expensive. High-quality outdoor LED lighting should be anti-ultraviolet and fire-resistant.
2. Lighting principle
The terminal voltage of the PN junction constitutes a certain potential barrier. When the forward bias voltage is applied, the potential barrier drops, and the majority carriers of the P region and the N region diffuse to each other. Since the electron mobility is much larger than the hole mobility, a large number of electrons will diffuse into the P region, which constitutes the injection of minority carriers into the P region. These electrons recombine with holes in the valence band, and the energy obtained during recombination is released in the form of light energy. This is the principle of PN junction light emission.
1. In-line low-power specifications include: straw hat/helmet, round head, concave, oval, square (2*3*4) bullet head, flat head, (3/5/flat head/bread type) piranha, etc.
2. SMD patches are generally divided into (3020/3528/5050, these are front-emitting)/1016/1024, etc. These are side-emitting light sources.
Do you know how to choose 1e d lamp beads now? The lamp beads of 1e d lamps are very bright. We can choose according to different bulbs when choosing. The size and brightness of the lamp beads used by different bulbs are all the same. Different. The voltage of 1ed lamp beads is generally within 4v, and different products have different voltage amplitudes, which is a high-voltage power supply. The current of 1ed lamp beads is generally about fifteen milliamps, and its brightness will increase as the current increases. When choosing a 1ed lamp bead, it is best to look at its energy efficiency.
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