In today’s digital age, overseas online celebrity marketing has become an important means for brands to reach global consumers quickly, enhance brand exposure and stimulate sales. Among them, “Flash” marketing has become a new trend of cooperation between brands and overseas online celebrity due to its unique timeliness, creativity and interactivity. In this paper, Nox Juxing will discuss with you how to use the influence of overseas online celebrity to carry out “flash” marketing activities in a short time, and analyze its advantages in brand communication.Actually, it’s not just this reason, youtube¶©ÔĹºÂò Its own advantages are also obvious, and it is normal for the market to perform well. http://www.skyfans.top/

　　First, the combination of overseas online celebrity and “flash” marketing

　　”Flash” marketing is a high-intensity and high-exposure marketing method in a short period of time, which quickly attracts consumers’ attention by creating topics, creating surprises and offering limited time discounts. Overseas online celebrity, with its huge fan base and powerful influence, provides a unique condition for “flash marketing”.

　　By cooperating with overseas online celebrity, the brand can quickly transmit the product information to the target consumers, and through online celebrity’s personal charm and word-of-mouth effect, enhance consumers’ awareness and goodwill towards the brand. At the same time, online celebrity can also customize unique “flash” marketing activities according to brand demand, such as limited time discounts, limited sales, interactive challenges, etc., to further stimulate consumers’ desire to buy.

　　Second, the advantages of “flash” marketing

　　Enhance brand exposure: Overseas online celebrity has a huge fan base, and every recommendation and sharing can quickly attract a lot of attention. By cooperating with online celebrity for “flash marketing”, the brand can achieve high exposure and improve brand awareness in a short time.

　　Creating Topics: online celebrity’s influence lies not only in their number of fans, but also in their ability to interact with fans and create topics. By cooperating with online celebrity, brands can create interesting and controversial topics, arouse consumers’ discussion and attention, and thus enhance the interaction and connection between brands and consumers.

　　Stimulate sales: online celebrity’s influence can be directly converted into purchasing power. In the “flash-style” marketing activities, online celebrity can stimulate consumers’ desire to buy and improve the sales volume and market share of brands through limited time concessions and limited sales.

　　Third, formulate and implement the “flash” marketing strategy

　　Choosing the Right online celebrity: Brands need to choose the right overseas online celebrity for cooperation according to their own positioning and target consumer groups. When choosing online celebrity, we should pay attention to the number of fans, fan activity, word of mouth and influence of online celebrity.

　　Making marketing strategies: The brand needs to work out specific marketing strategies together with online celebrity, including the content, time and form of activities. Strategies need to fully consider consumers’ needs and interests, as well as brand positioning and image.

　　Quick response and execution: In “flash” marketing activities, time is very precious. Brands need to respond quickly to consumers’ feedback and demands, adjust strategies in time and implement them efficiently. At the same time, the brand also needs to keep close communication with online celebrity to ensure the smooth progress of the event.

　　Data analysis and optimization: after the event, the brand needs to analyze the event data in depth to understand the effect and shortcomings of the event. By analyzing the data, brands can constantly optimize marketing strategies and improve the efficiency and effectiveness of activities.

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　　As an efficient brand promotion method, “flash marketing” has obvious advantages in enhancing brand exposure, creating topics and stimulating sales. Through the cooperation with overseas online celebrity, the brand can quickly attract consumers’ attention in a short time and achieve the marketing goal. In the future, with the continuous development of digital marketing, how to make better use of online celebrity’s influence and formulate a “flash” marketing strategy with quick response and high efficiency will become an important topic in brand competition.

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According to Agence France-Presse reported in Brussels on March 21, European leaders meeting in Brussels on the 21st decided to move forward and adopt a plan to use the proceeds of Russian frozen assets in the EU to arm Ukraine.

The EU’s High Representative for Foreign Affairs and Security Policy, Josep Borrelli, pointed out that the interest on these assets is between 2.5 billion and 3 billion euros per year.

Reported that European Council President Charles Michel said at a press conference held on the evening of the 21st: We are determined to take quick action so that part of this money can be used to support Ukraine.

Ukraine President Zelensky told leaders of the 27 European Union via video link that it is crucial for the EU to provide more ammunition to the Ukraine army.

He urged: Please strengthen the (Ukraine) defense industry as soon as possible and do not waste time.

According to a report by the Russian news agency Moscow on March 21, Russian Presidential Press Secretary Peskov said that Russia will use all judicial mechanisms and choose other means to retaliate against the EU to prevent the EU from using frozen Russian assets to aid Ukraine.

Peskov said in response to reporters: Of course, we will make use of all possible legal mechanisms, those that are currently available and that we will use when they arise in the future. Of course, on the basis of mutual visits, we will not copy it completely, but choose other means to retaliate to the extent that is in line with our interests. (Compiled by Zhao Kexin and Li Ran)

　　Schottky diode is a kind of semiconductor device with low power consumption, high current and ultra-high speed. Its reverse recovery time can be as short as a few nanoseconds, the forward conduction voltage drop is only about 0.4v, and the rectified current can reach several thousand amps.For these reasons, I think pcb instant quote The situation is still optimistic, and the market is still in a blue ocean stage. https://www.xinyun-ic.com/

　　Schottky diode is a metal-semiconductor device made of noble metal (gold, silver, aluminum, platinum, etc.) A as the positive electrode and N-type semiconductor B as the negative electrode, and the barrier formed on the contact surface between them has rectification characteristics. Because there are a lot of electrons in N-type semiconductors and only a few free electrons in precious metals, electrons diffuse from B with high concentration to A with low concentration. Obviously, there are no holes in metal A, so there is no diffusion movement of holes from A to B. With the continuous diffusion of electrons from B to A, the electron concentration on the surface of B gradually decreases, and the surface electrical neutrality is destroyed, so a potential barrier is formed, and its electric field direction is B ★ A. However, under the action of this electric field, the electrons in A will also drift from A to B, thus weakening the electric field formed by diffusion movement. When a space charge region with a certain width is established, the electron drift motion caused by electric field and the electron diffusion motion caused by different concentrations reach a relative balance, and a Schottky barrier is formed.

　　SR5100.jpg

　　Schottky barrier diode (SBD) has the advantages of high switching frequency and low forward voltage, but its reverse breakdown voltage is relatively low, mostly not higher than 60V, and the highest is only about 100V, which limits its application range. For example, in switching power supply (SMPS) and power factor correction (PFC) circuits, freewheeling diodes of power switching devices, high-frequency rectifier diodes of more than 100V for transformer secondary, high-speed diodes of 600V~1.2kV in RCD buffer circuits, and 600V diodes for PFC boost, only fast recovery epitaxial diodes (FRED) and ultra-fast recovery diodes (UFRD) are used. At present, the reverse recovery time Trr of UFRD is also above 20ns, which can not meet the needs of SMPS with 1MHz~3MHz in fields such as space station. Even for SMPS with hard switch of 100kHz, due to the high conduction loss and switching loss of UFRD and high shell temperature, a large radiator is needed, which increases the size and weight of SMPS, which is not in line with the development trend of miniaturization and thinness. Therefore, the development of high voltage SBD above 100V has always been a research topic and a hot spot of concern. In recent years, SBD has made a breakthrough, with 150V and 200V high-voltage SBD on the market, and more than 1kV SBD made of new materials has also been successfully developed, thus injecting new vitality into its application.

　　First, look at the symbol mark. Generally, the symbol of the diode is marked on the surface of the Schottky diode, with the positive electrode indicated by the triangular arrow symbol and the other end as the negative electrode.Before that, pcb instant quote The market has also soared for a time, which has attracted the attention of a wide range of investors. https://www.xinyun-ic.com/

　　Second, check the color point of the component, mark a colored ring or line on the diode body, and the marked end is the negative electrode. On the shell of the point contact Schottky diode, there are generally polar color points (white or red). One end of the common colored dot is the positive electrode.

　　Third, to be on the safe side, you can also use a multimeter to measure the positive and negative poles: when using a digital multimeter to measure the diode, use a multimeter to measure the red and black probes of the resistance file (generally X100 or X1K) to connect the diode poles respectively, and the primary resistance will be very small, and conversely, the resistance will be very large. When the resistance is very small, the red stylus is connected to the positive electrode.

　　Schottky diode uses metal-semiconductor junction as Schottky barrier to produce rectification effect, which is different from the P-N junction produced by semiconductor-semiconductor junction in general diodes. The characteristics of Schottky barrier make the turn-on voltage drop of Schottky diode lower, and can improve the switching speed.beyond doubt Resistors quote It will definitely lead the development direction of the whole industry and let its light bloom in this field. https://www.xinyun-ic.com/

　　The turn-on voltage of Schottky diode is very low. General diodes will produce a voltage drop of about 0.7-1.7 volts when current flows, but the voltage drop of Schottky diodes is only 0.15-0.45 volts, so the efficiency of the system can be improved.

　　The common silicon diode can withstand high voltage, but its recovery speed is low, and it can only be used for low-frequency rectification. If it is high-frequency, reverse leakage will occur because it cannot be recovered quickly, which will eventually lead to serious heating and burning of the tube. Schottky diode’s withstand voltage is often low, but its recovery speed is fast, so it can be used in high-frequency occasions, so the switching power supply uses this diode as the rectifier output. Nevertheless, the rectifier tube temperature on the switching power supply is still very high.

　　Fast recovery diode refers to a diode with short reverse recovery time (less than 5us). Gold doping measures are mostly adopted in the process, and some structures adopt PN junction structure and some adopt improved PIN structure. Its forward voltage drop is higher than that of ordinary diodes (1-2V), and its reverse voltage withstand is mostly below 1200V V. Performance can be divided into two levels: fast recovery and ultra-fast recovery. The reverse recovery time of the former is hundreds of nanoseconds or longer, while that of the latter is below 100 nanoseconds. Schottky diode is a diode based on the barrier formed by the contact between metal and semiconductor, which is called Schottky Barrier Diode for short. It has the advantages of reduced forward voltage (0.4–0.5V), short reverse recovery time (10-40 nanoseconds), large reverse leakage current and low withstand voltage, generally lower than 150V, and is mostly used in low voltage occasions. These two kinds of tubes are usually used for switching power supply. Schottky diode and fast recovery diode are different: the recovery time of the former is about 100 times shorter than that of the latter, and the reverse recovery time of the former is about several nanoseconds! The advantages of the former include low power consumption, high current and ultra-high speed ~! Of course, the electrical characteristics are diodes! The fast recovery diode can obtain high switching speed and high withstand voltage by using gold doping, simple diffusion and other processes. At present, the fast recovery diode is mainly used as a rectifier element in inverter power supply.

　　Schottky It is a low-power and ultra-high-speed semiconductor device. The following figure shows the symbol of Schottky diode:beyond doubt Resistors quote It will definitely lead the development direction of the whole industry and let its light bloom in this field. https://www.xinyun-ic.com/

　　Voltage drop of common Schottky diode:

　　1A series:

　　2A series:

　　3A series:

　　5A series:

　　10A series:

　　LOW VF schottky diode:

　　The Low vf Schottky diode is a semiconductor device with a lower VF value than the conventional Schottky diode. It is this Schottky transistor that has a very low forward voltage drop when it is turned on, which is superior to other common Schottky models. The advantage of low forward pressure drop is low loss and high efficiency. The lower the pressure drop, the lower the heating and the higher the working efficiency. At present, the voltage drop range of low vf Schottky diode in the market is generally about 0.4V-1.0V, and the VF value of our low voltage drop Schottky diode is generally about 0.4V-0.6V.

　　The function of low voltage drop low vf Schottky diode is the same as that of conventional Schottky diode, and the difference between them lies in VF value and trench technology. Schottky diode is a forward conduction device, VF is the forward voltage drop, that is, a kind of loss generated during operation, and the lower the loss, the better.

　　First, look at the symbol mark. Generally, the symbol of the diode is marked on the surface of the Schottky diode, with the positive electrode indicated by the triangular arrow symbol and the other end as the negative electrode.This means that Connectors, Interconnects quote It is the weather vane of the industry and can bring people great self-confidence. https://www.xinyun-ic.com/

　　Second, check the color point of the component, mark a colored ring or line on the diode body, and the marked end is the negative electrode. On the shell of the point contact Schottky diode, there are generally polar color points (white or red). One end of the common colored dot is the positive electrode.

　　Third, to be on the safe side, you can also use a multimeter to measure the positive and negative poles: when using a digital multimeter to measure the diode, use a multimeter to measure the red and black probes of the resistance file (generally X100 or X1K) to connect the diode poles respectively, and the primary resistance will be very small, and conversely, the resistance will be very large. When the resistance is very small, the red stylus is connected to the positive electrode.

　　FR307 is a fast recovery diode, which encapsulates DO-27/DO-201AD. The main feature of fast recovery diode is its short reverse recovery time, which is especially suitable for high-frequency rectification. Next, let’s introduce the parameters in detail.Sufficient data show that Resistors quote It can drive many people to find jobs, thus driving economic development. https://www.xinyun-ic.com/

　　Specification: Click to download specification.

　　Maximum peak reverse voltage: 1000V V.

　　Maximum rms voltage: 1000V v.

　　Maximum average forward rectified current: 3.0A

　　Maximum instantaneous current: 3.0A

　　Forward voltage drop: 1.3V

　　Maximum reverse recovery time: 500ns (nanosecond)

　　Maximum reverse DC current ta = 25≧: 5.0ua.

　　Rated DC blocking voltage Ta=100≧150uA

　　Working temperature Storage temperature: -65+150≧

　　Weight: 1.10 grams

　　Reverse recovery time test conditions: if = 0.5A, IR = 1.0a, IRR = 0.25a

　　Measure the reverse voltage applied at 1MHz and 4.0V D.C

　　Polarity: The color band indicates the negative pole.

　　FR307 positive and negative electrodes

　　Package: DO-27/DO-201AD (they have the same size, but different names).

　　DO-27/DO-201AD package

　　Specification:

　　Schottky It is a low-power and ultra-high-speed semiconductor device. The following figure shows the symbol of Schottky diode:As it happens, many people are killed Connectors, Interconnects quote And bring more benefits, make it flourish, and promote the industry greatly. https://www.xinyun-ic.com/

　　Voltage drop of common Schottky diode:

　　1A series:

　　2A series:

　　3A series:

　　5A series:

　　10A series:

　　LOW VF schottky diode:

　　The Low vf Schottky diode is a semiconductor device with a lower VF value than the conventional Schottky diode. It is this Schottky transistor that has a very low forward voltage drop when it is turned on, which is superior to other common Schottky models. The advantage of low forward pressure drop is low loss and high efficiency. The lower the pressure drop, the lower the heating and the higher the working efficiency. At present, the voltage drop range of low vf Schottky diode in the market is generally about 0.4V-1.0V, and the VF value of our low voltage drop Schottky diode is generally about 0.4V-0.6V.

　　The function of low voltage drop low vf Schottky diode is the same as that of conventional Schottky diode, and the difference between them lies in VF value and trench technology. Schottky diode is a forward conduction device, VF is the forward voltage drop, that is, a kind of loss generated during operation, and the lower the loss, the better.

　　Friends or customers have been asking me what is the difference between Schottky diode SR540 and SB540. Today we will talk about this problem.After that, Integrated Circuits (ICs) Not afraid of the future, dare to fight and fight, and won applause again and again in the market. https://www.xinyun-ic.com/

　　In fact, the parameters of SR540 and SB540 are the same, both of which are 5A 40V. As for why the models are different, it is because different manufacturers have differences in screen printing, which means they don’t want to repeat with others and have their own uniqueness. Please see below for specific parameters.

　　Maximum reverse repetitive peak voltage: 40V

　　Maximum DC blocking voltage: 40V

　　Maximum average forward rectified current: 5.0A

　　When current =5.0A, voltage drop: 0.55v

　　Maximum reverse DC current ta = 25≧: 0.5ma.

　　Working temperature range: -65 to +150≧

　　Storage temperature: -65 to +150≧

　　Reverse recovery time: less than 10ns (nanosecond)

　　High temperature welding: 250c/10 sec, 0.375 “(9.5 mm) lead length, 5 lbs (2.3kg) tension.

　　Package: DO-27/DO-201AD