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5050 SMD lamp beads refer to square SMD LED light sources with LED length, width and height of 5.0*5.0*1.6mm respectively. There are two thicknesses of 5050 SMD LEDs, 1.6mm and 2.8mm. The 5050 SMD LEDs are made of silicone sealant, which is small in size and fine in workmanship. It is widely used in high-end civil energy-saving lamps, automotive dashboards, LED light strips, Mobile phone backlight and keys, instrument backlight and products that require smaller LED light-emitting diodes. The single-core 5050 SMD lamp bead is the practical application product of the latest research on light-emitting diodes. So, what is the difference between 5050 single-core and three-core red light bead patches? 1.5050 single-core red light patch lamp beads are an upgraded substitute for three-core products; 2.5050 three-core SMD lamp beads cause the phosphor to deviate from the center of the chip due to thermal expansion and cold contraction, resulting in blue light leakage, resulting in uneven color temperature and color. The problem of spot movement, 5050 single-chip SMD lamp beads solve the problem of three-core 5050 SMD chromatic aberration; 3.5050 three-chip SMD lamp beads are packaged with low-power chips, and 5050 single-chip SMD lamp beads are packaged with high-power chips. Package; with the increase of the chip, the LED light decay tends to zero, which prolongs the service life of the LED; 4.5050 single-core LED SMD lamp beads greatly improve the reliability of the LED; the 5.5050 single-chip SMD lamp beads have low thermal resistance Based on the 5050 three-core LED chip, which contributes to the service life, heat dissipation and light efficiency of the light-emitting diode; SMD lamp beads have high cost performance and stability, and were the dominant direction of the market in the past, and are currently mainly aimed at high-end customers. The above is about the dynamics of LED lamp beads. If you want to know more news and dynamics of our company, please click to browse our official website. Our company also sells UV Lights, UV LED Curing, UVC LED, UV Germicidal Lamps, UV Curing and UV LED Packages.

The main features of 5050 SMD lamp beads are: Low voltage drive, environmental protection and energy saving; Small size, easy installation; High brightness, large scattering angle, and good consistency. Precautions for use: 1. Overcurrent protection: The customer must use a resistor for protection, otherwise the drift of the voltage will cause a large change in the current (breakdown). When the lamp bead is used, the current must be within the specified range to avoid damage caused by excessive current. 2. Storage method; Do not open the moisture-proof bag before preparing to use the product. Before opening the package, please check whether there is any air leakage in the packaging bag. After opening the package, check whether the 20%RH marking area of the humidity label card has changed from blue to pink. If there is air leakage or discoloration, please contact the manufacturer or return it to the manufacturer for high temperature dehumidification treatment. (High temperature dehumidification environment: 120 degrees, 6H) Do not handle it yourself. Before opening the package, LEDs should be stored at a temperature below 30°C and a humidity below 30°C. 70%RH. After opening the package, under the condition that the temperature is lower than 30℃, the humidity is lower than 60%RH, and the temperature is controlled within 4H from the time of opening the package to the completion of welding. If the hygroscopic material (silicon gel) has subsided or the LEDs have exceeded the storage time, it needs to be baked based on the following conditions: 60±5℃ / 24 hours. Precautions for reflow soldering 1. Reflow soldering cannot be performed more than twice. During soldering, do not add any pressure to the LEDs while heating. After welding, the overcurrent can not be overcurrent until the temperature is normally returned to below 40°C. Protective measures Use appropriate tools to pick from the side of the material, because the product is encapsulated with silicone to avoid crushing the colloid during the application process and damaging the internal structure and causing defects. LEDs are semiconductor sensitive devices, and may be damaged by electrostatic discharge (ESD) or pulsed current (EOS). Effective grounding of the operating machine and good electrostatic protection during operation can effectively improve product quality. SMD LED lamp beads need to avoid sulfur in the production process and the environment in which the lamps are used. halogen. acid. alcohol. alkali. Ketoxime volatile compounds, strong oxides. Contact with corrosive substances such as plasticizers (also known as plasticizers, dioctyl phthalate DOP or dibutyl phthalate DBP, PVC materials contain a large amount of plasticizers). That's it for today's explanation. If you want to know how to buy it, you can directly contact the online customer service for consultation. The above is about the news. If you want to know more news and news of our company, please click to browse our official website. Our company also sells UV Lights, UV LED Curing, UVC LED, UV Germicidal Lamps, UV Curing and UV LED Packages.

Friends who are familiar with inductors know that inductors can be divided into many types according to different angles such as shape or function, such as welt inductors, integrated inductors, color ring inductors, I-shaped inductors, etc. Today, I will share with you the difference between chip inductors and magnetic ring inductors.Although both chip inductors and magnetic ring inductors belong to inductors, they are still very different. Today, we mainly analyze the difference between the chip inductance and the magnetic ring inductance from the perspective of the current that is allowed to pass through the inductance. Chip inductors have the characteristics of miniaturization, high quality, and high energy storage, and are one of the most commonly used inductor types. Due to its particularity, chip inductors are usually small current in terms of production requirements. For example, the current of some magnetic ring inductors can reach more than ten A, while the current of conventional chip inductors is only a few A. When the inductance value is tens of MH, the inductance current of the magnetic ring can reach 1A, but the current of the conventional SMD inductance can not be so large, even if the current is achieved, it is UA level (UA level usually refers to the quiescent current below 0.1mA .ie around 1-100UA, usually around 10UA). Magnetic ring inductance and chip inductance are still very distinguishable in appearance. We can see the magnetic ring inductance at a glance, why do you say that? Because the magnetic ring inductor generally has a ring, its enameled wire is wound on the magnetic ring. SMD inductors are generally white, wire wound, etc. The inductance value is generally marked on its surface, such as 2R2 and so on. Magnetic ring inductance has the characteristics of high saturation magnetic induction intensity, small temperature rise and large inductance. Magnetic ring inductance generally can pass large current and have high inductance value. However, there is little difference in the inductance value of the power type inductors. The main difference between them is the size of the current that is allowed to pass through during operation. In addition, their uses are also different. Chip inductors are mainly used in converters, communication equipment and other fields. Magnetic ring inductors are mainly used in fields such as automobiles. If you want to know more news and developments of our company, please click to browse our official website. Our company also sells UV Lights, UV LED Curing, UVC LED, UV Germicidal Lamps, UV Curing and UV LED Packages.

SMD LED beads should be small. The angle of the SMD LED can be larger, and the heat dissipation and stability will be much better. Because there is no silica gel and the reflector, the light transmittance of the lamp beads is low, so the luminous flux will be lower. The angle of the in-line LED can be very small, and the light is more concentrated. Although the shot is more expensive, the illumination power should be smaller, and the power of the in-line LED lamp bead is larger. The soldering point of SMD LED lamp bead is more limited than that of direct plug-in LED lamp. According to the shape: the in-line LED lamp beads are: round head, flat head, concave, straw hat, steel helmet, etc., while the SMD LED lamp beads are flat SMD lamp beads, which are divided into large patches and small patches. , As the name implies, large patches have high power, while small patches have low power. Process difference: SMD LED adopts SMD chip technology, and in-line LED adopts DIP plug-in technology. SMD led lamp beads are mainly used for: soft and hard light strips, light strips, keyboard lights, mouse lights, fluorescent tubes, jade bead lights, desk lamps. Plug-in led lamp beads are mainly used for: traffic lights, small street lights, downlights, flashlights, ceiling lights, etc. SMD LED lamp beads and in-line LED lamp beads have their own advantages and disadvantages. You can analyze which lamp beads are more suitable according to the specific situation! If you want to know more news and trends of our company, please click to browse our official website. Our company also sells UV Lights, UV LED Curing, UVC LED, UV Germicidal Lamps, UV Curing and UV LED Packages.

The fuse (tube) is used in the protection circuit. Because the fuse is one-off, has a slow response speed, poor effect, and troublesome use, the fuse is not suitable for use in the finished LED lamp, because the LED lamp is mainly used in the city's glorious engineering and lighting. Chemical engineering. It requires the LED lamp bead protection circuit to be very harsh: the protection can be activated immediately when the normal use current is exceeded, so that the power supply path of the LED is disconnected, so that the LED and the power supply can be protected, and it can automatically restore after the entire lamp is normal. Power supply does not affect the operation of the LED. The circuit cannot be too complicated, not too big, and the cost is low. Therefore, it is very difficult to implement using a fuse. Use Transient Voltage Suppression Diode (TVS for short).Transient Voltage Suppression Diode is a high-efficiency protection device in the form of a diode. When its two poles are subjected to a reverse transient high-energy impact, it can immediately reduce the high resistance between its poles to a low resistance at a speed of 10 minus 12 seconds in a very short time, and absorb up to several kilowatts of surge power. The voltage between the two poles is clamped to a predetermined voltage value, which effectively protects the precision components in the electronic circuit. Transient voltage suppression diodes have the advantages of fast response time, large transient power, low leakage current, good uniformity of breakdown voltage deviation, easier control of the clamping voltage, no damage limit, and small size. However, it is not easy to find TVS devices that meet the required voltage value in actual use. The damage of the LED light bead is mainly caused by the overheating of the chip. TVS can only detect overvoltage but not overcurrent. It is difficult to choose a suitable voltage protection point, and this kind of device cannot be produced and it is difficult to use in practice. Choose self-recovery fuse self-recovery fuse, also known as polymer positive temperature thermistor PTC, is composed of polymer and conductive particles. After special processing, the conductive particles form a chain-like conductive path in the polymer. When the normal working current passes (or the component is at normal ambient temperature), the PTC resettable fuse is in a low resistance state; when there is an abnormal overcurrent in the circuit (or the ambient temperature rises), the large current (or the ambient temperature rises) The generated heat causes the polymer to expand rapidly, which cuts off the conductive path formed by the conductive particles. The PTC resettable fuse is in a high-resistance state; when the overcurrent (over-temperature state) in the circuit disappears, the polymer cools and the volume recovers Normally, the conductive particles re-constitute the conductive path, and the PTC resettable fuse is in the initial low resistance state. In the normal working state, the self-recovery fuse has very little heat, and in the abnormal working state, its heat is very high and the resistance value is very large, which limits the current passing through it, thereby playing a protective role. In the specific circuit, you can choose: ①Shunt protection. Generally, LED lights are divided into many branches connected in series. We can add a PTC component in front of each branch for protection. The advantage of this method is high accuracy and good protection reliability. ②Overall protection. Add a PTC component in front of all the light beads to protect the entire lamp. The advantage of this method is that it is simple and does not take up volume. For civilian products, the results of this protection in actual use are still satisfactory. In addition, our company also sells UV Lights, UV LED Curing, UVC LED, UV Germicidal Lamps, UV Curing and UV LED Packages, welcome to consult.

The configuration of LED applications depends on many factors, including LED parameters and quantity, voltage, efficiency, heat dissipation management, size and layout restrictions, and optics. The simplest configuration form is a single LED, and applications that use this design include automotive interior ceiling lights, map lights, reading lights, and so on. Since the actual application usually requires plane light emission, it is necessary to arrange and combine multiple LEDs as required to meet the application requirements of a larger range, higher brightness, dynamic display, color conversion, and the matching requirements between the LED and the driving power supply. 1. Brightness The brightness of the LED is different, and the price is different. The LED used in the LED lamps should meet the laser class Ⅰ standard. 2. Antistatic ability LEDs with strong antistatic ability have long life and high price. Generally, LEDs with anti-static voltage greater than 700V can be used for LED lighting. 3. Wavelength LEDs with the same wavelength have the same color. If the color is required to be the same, the price is high. It is difficult for manufacturers without LED spectrophotometers to produce products with pure colors. 4. Leakage current LED is a unidirectional conductive light-emitting body. If there is a reverse current, it is called leakage. LEDs with large leakage current have short life and low price. 5. Light-emitting angle LEDs with different uses have different light-emitting angles. Special lighting angle, higher price. Such as full diffusion angle, the price is higher. 6. Life span The key to different qualities is life span, which is determined by light decay. Low light decay, long life, long life, high price. 7. Chip LED's light-emitting body 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 made in Taiwan and China are lower than those in Japan and the United States. 8. Chip size The size of the chip is expressed by the side length. The quality of the large chip LED is better than that of the small chip. The price is proportional to the size of the chip. 9. Colloid The colloid of ordinary LEDs is generally epoxy resin. LEDs with anti-ultraviolet and fire retardants are more expensive. High-quality outdoor LED lighting should be anti-ultraviolet and fireproof. The above is about the selection skills of LED lamp beads. If you want to know more news and developments of our company, please click and browse our official website. Our company also sells UV Lights, UV LED Curing, UVC LED, UV Germicidal Lamps, UV Curing and UV LED Packages.

White LED lamp beads are voltage-sensitive devices. In actual work, the current is 20mA as the upper limit, but the current will often increase due to various reasons in use. If no protective measures are taken, this increase The LED lamp beads will be damaged after the current exceeds a certain time and amplitude. The main reasons for the damage of the LED lamp beads are: ① Sudden increase of the power supply voltage. ② The short circuit of a component or printed line or other wire in the circuit forms a local short circuit of the power supply path of the LED lamp beads, which increases the voltage in this place. ③ A certain LED lamp bead is short-circuited due to its own quality damage, and its original voltage drop is transferred to other LED lamp beads. ④ The temperature inside the lamp is too high, which makes the characteristics of the LED lamp bead deteriorate. ⑤ Water has entered the lamp, and the water is conductive. ⑥ The anti-static work was not done well during assembly, so that the inside of the LED lamp bead has been damaged by static electricity. Although the normal voltage and current values are applied, it is very easy to cause damage to the LED lamp beads. The above is about the reasons for the damage of LED lamp beads. If you want to know more news and developments of our company, please click and browse our official website. Our company also sells UV Lights, UV LED Curing, UVC LED, UV Germicidal Lamps, UV Curing and UV LED Packages.

In the LED packaging process, the vulcanization phenomenon mainly occurs in the die bonding and dispensing packaging processes, and the vulcanization is mainly caused by silver-containing materials (silver-plated stents and conductive silver glue) and silicone adhesive materials. When silver-containing materials are vulcanized, black silver sulfide will be generated, causing the vulcanized area to turn yellow and black; the vulcanization of silicone rubber materials will cause silica gel [poisoning", which will hinder curing and fail to fully cure. Among them, the poisoning of silicone curing agent: The curing agent of LED encapsulation silicone contains platinum (platinum) complex, and this platinum complex is very easy to poison. The poisoning agent is any kind of nitrogen (N), phosphorus (P) ), sulfur (S) compounds, once the curing agent is poisoned, the silicone will not be cured completely, which will cause the linear expansion coefficient to be higher and the stress to increase. Take the SMD lamp bead packaging process as an example, the materials that may be vulcanized during the production process include: 1. In the bonding process, the silver-plated stent is vulcanized, and the stent becomes yellow, black and tarnished, which will reduce reliability; 2. In the solidification process, the silver glue is vulcanized, the silver glue is black, and the color is dim, which will lead to reduced reliability or failure; 3. In the bonding process, the silicon-based bonding adhesive is vulcanized, which will hinder the curing and cannot be fully cured, which will cause the bonding force to decrease or fail; 4. In the dispensing, powder dispensing, and encapsulation processes, the silicon-based dot powder is vulcanized, which will cause curing hindrance, unable to fully cure, and product failure; 5. In the dot powder process, the phosphor contains sulfur, which will hinder the curing and cause the product to fail. LED packaging factory must pay great attention to the prevention of vulcanization in these two links during the LED production process. The prevention methods are: 1. Avoid exposing the LED to a slightly acidic (PH<7) workshop environment. Nitrogen-containing acid gases will first react with silver and then with sulfur/chlorine/bromine elements to produce black silver sulfide, silver chloride or silver bromide. 2. For the purchased other LED supporting materials, the manufacturer can be required to provide the LED auxiliary material discharge sulfur/bromine/chlorine test report provided by Jinjian to confirm whether it contains sulfur, halogen and other substances to prevent it from chemically or with the LED material. The physical reaction causes the corrosion of the silver plating layer of the LED product, and the performance of the LED silica gel and phosphor material changes, which leads to the failure of the LED photoelectric performance. 3. Use desulfurization gloves, finger cots, and sulfur-free masks; distinguish sulfur-free materials and box clamps; use sulfur-free cleaning agents; use sulfur-containing PCB boards after cleaning and desulfurization; set up a dedicated sulfur-free oven and use the products separately. Bake independently. 4. The substances that are prone to silica gel "poisoning" include: organic compounds containing N, P, S, etc.; heavy metal ion compounds such as Sn, Pb, Hg, Sb, Bi, As, etc.; organic compounds containing unsaturated groups such as ethynyl groups. Pay attention to the following materials: Organic rubber: sulfur vulcanized rubber such as gloves Epoxy resin, polyurethane resin: amine, isocyanate curing agent Comprehensive silicone RTV rubber: especially using Sn catalyst Soft polyvinyl cyanide: plasticizer, stabilizer flux Engineering plastics: flame retardants, enhanced heat-resistant agents, ultraviolet absorbers, etc. Silver-plated, gold-plated surface (the plating solution during manufacturing is the main reason) Outgassing generated by the Solder register (caused by heating and curing of silicone) Vulcanization is an irreversible chemical reaction. Once vulcanization occurs, the product will be scrapped and cannot be recovered. As a professional third-party LED analysis and testing organization, Jinjian Testing LED Laboratory has a large number of professional microstructure testing and analysis equipment and a large number of LED sulfur removal case analysis experience, which can quickly detect the possible sulfur/chlorine/bromine in the LED packaging process To investigate and identify the pollution sources, and provide an optimized plan to reduce millions of losses for packaging manufacturers. The above is about the development of LED packaging. If you want to know more news and developments of our company, please click and browse our official website. Our company also sells UV Lights, UV LED Curing, UVC LED, UV Germicidal Lamps, UV Curing and UV LED Packages.

Ultraviolet LED light source, which is the abbreviation of ultraviolet light emitting diode, is distinguished from the perspective of human health and environmental impact, we can divide the purple light into the following grades according to wavelength: UV (violet light): Visible light purple light (400-420nm )UVA (315~400nm), also known as long-wave violet light or "black light". ... Ultraviolet LED Light Source, Also Short for Ultraviolet Light Emitting Diode, can be distinguished from the perspective of human health and environmental impact, we can divide the purple light into the following grades according to wavelength: UV (purple light): Visible light purple light (400-420nm) UVA (315~400nm), also known as long-wave Violet light or "black light". UVB (280~315nm), also known as medium-wave violet. UVC (200~280nm), also known as short-wave Violet or Germicidal Violet. UVD: vacuum ultraviolet (100-200 nm) Sunlight includes UVA, UVB, and UVC three bands of ultraviolet light, but due to the absorption of the ozone layer in the air, 99% of the ultraviolet light reaching the ground is in the UVA band. Ultraviolet LED generally refers to the LED whose emission center wavelength is below 400nm, but sometimes called near-ultraviolet LED when the emission wavelength is greater than 380nm, and called deep-ultraviolet LED when the emission wavelength is shorter than 300nm. Ultraviolet LED (UV LED) is mainly used in the fields of biomedicine, anti-counterfeiting identification, purification (water, air, etc.), computer data storage and military. And with the development of technology, new applications will continue to appear to replace the original technology and products. UV LED has broad market application prospects. For example, UV LED phototherapy instrument is a very popular medical device in the future, but the current technology is still in Growth period. Ultraviolet LEDs are receiving widespread attention from lighting equipment manufacturers and liquid crystal display manufacturers. Because by using ultraviolet light and fluorescent materials that can convert ultraviolet light into red, green, and blue respectively, it is possible to realize a white LED with strong color reproducibility. Currently, most commercially available white LEDs use blue LEDs and phosphor materials that convert blue light into yellow light, and the red light component is relatively weak. A faint orange color appears when white light is irradiated on a red material. If you want to use it for backlighting, you have to think of a way on the color filter. But if it is a UV LED, these problems can be solved. However, since the luminous efficiency of UV LEDs is about half lower than that of products using blue LEDs, brightness has become a major issue for UV LEDs. The above is about the dynamics of LED light source. If you want to know more news and developments of our company, please click and browse our official website. Our company also sells UV Lights, UV LED Curing, UVC LED, UV Germicidal Lamps, UV Curing and UV LED Packages.

LED lamp bead is a kind of new lighting components with low energy consumption, low thermal radiation, high luminous efficiency, economy, environmental protection and safety. Especially the advent of white LED lamp bead, the lighting industry really began the era of green lighting. With the advent of green lighting era, high-power LED lamp beads have gradually become the main body of lighting industry. High-power LED lamp beads mainly have three characteristics: 1, voltammetry characteristics High power LED lamp is a low voltage, high current driving device, when the LED lamp voltage change is very small, the current changes greatly. 2. Optical characteristics According to the principle of LED lamp bead, the brightness of LED lamp bead basically changes with the current of LED lamp bead. Controlling the luminance of high-power LED lamp beads is essentially to control its output luminous flux. 3. Temperature characteristics The size of the forward current of the LED lamp bead also varies with temperature. Once the ambient temperature exceeds a certain value, the allowable forward current of the white LED lamp bead will be greatly reduced. In this case, if the large current is still applied, it is easy to cause the aging of the white LED lamp bead. The above is about the dynamics of LED lamp beads. If you want to know more news and dynamics of our company, please click on our official website. Our company also sells UV Lights, UV LED flights, UVC LED flights, UV Germicidal Lamps, UV LED flights and UV LED Packages.