{"product_id":"0201-0402-0603-0805-1206-1210-chip-ceramic-capacitor-1uf-2-2uf-4-7uf-6-3v-10v-16v-25v-35v-50v-100v-200v-250v-x7r-x5r-10-20","title":"0201 0402 0603 0805 1206 1210 CHIP CERAMIC CAPACITOR 1UF 2.2UF 4.7UF 6.3V 10V 16V 25V 35V 50V 100V 200V 250V X7R X5R 10% 20%","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYXYchip,YXYchip\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China,Mainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003esemi_Choice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp\u003eChip capacitor full name: multi-layer (laminated, laminated) chip ceramic capacitor, also known as chip capacitor, chip capacity.\u003c\/p\u003e\n\u003cp\u003eFull English name: Multiplayer Ceramic Chip Capacitors. English abbreviation: MLCC.\u003c\/p\u003e\n\u003cp\u003eMulti-layer Ceramic Chip Capacitors are classified into NPO, X7R, Z5U\u003c\/p\u003e\n\u003cp\u003ecatalogue\u003c\/p\u003e\n\u003cp\u003e1 size 3 package 5 MLCC capacitor selection\u003c\/p\u003e\n\u003cp\u003e2 Naming 4 Classification 6 Action 7 Internal structure\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e1 Size editing\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThere are two dimensional representations of the chip capacitance, one of which is expressed in inches\u003c\/p\u003e\n\u003cp\u003eOne is expressed in millimeters, the series models of the chip capacitor are 0402, 0603, 0805, 1206, 1210, 1808, 1812, 2010, 2225, 2512,\u003c\/p\u003e\n\u003cp\u003ethese are inch notation, 04 means the length is 0.04 inches, 02 means the width is 0.02 inches, Other similar size (mm)\u003c\/p\u003e\n\u003cp\u003eBritish dimensions Metric dimensions Length and tolerance Width and tolerance thickness and tolerance\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e0402 1005 1.00±0.05 0.50±0.05 0.50±0.05\u003c\/p\u003e\n\u003cp\u003e0603 1608 1.60±0.10 0.80±0.10 0.80±0.10\u003c\/p\u003e\n\u003cp\u003e0805 2012 2.00±0.20 1.25±0.20 0.70±0.20 1.00±0.20 1.25±0.20\u003c\/p\u003e\n\u003cp\u003e1206 3216 3.00±0.30 1.60±0.20 0.70±0.20 1.00±0.20 1.25±0.20\u003c\/p\u003e\n\u003cp\u003e1210 3225 3.00±0.30 2.54±0.30 1.25±0.30 1.50±0.30\u003c\/p\u003e\n\u003cp\u003e1808 4520 4.50±0.40 2.00±0.20 ≤2.00\u003c\/p\u003e\n\u003cp\u003e1812 4532 4.50±0.40 3.20±0.30 ≤2.50\u003c\/p\u003e\n\u003cp\u003e2220 57505.70±0.40 5.00±0.30 ≤2.50\u003c\/p\u003e\n\u003cp\u003e2225 5763 5.70±0.50 6.30±0.50 ≤2.50\u003c\/p\u003e\n\u003cp\u003e3035 7690 7.60±0.50 9.00±0.05 ≤3.00\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e2 Naming and Editing\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe parameters included in the naming of the chip capacitor are the size of the chip capacitor, the material used to make the chip capacitor,\u003c\/p\u003e\n\u003cp\u003ethe accuracy required, the required voltage, the required capacity, the requirements of the end and the requirements of the packaging. Generally,\u003c\/p\u003e\n\u003cp\u003ethe parameters required to order the chip capacitor should be the size, the required accuracy, the voltage requirements, the capacity value,\u003c\/p\u003e\n\u003cp\u003eand the required brand.\u003c\/p\u003e\n\u003cp\u003eName of chip capacitor:\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e0805CG102J500NT 0805: refers to the size of the chip capacitor, which is expressed in inches.08 means the length is 0.08 inches, 05 means the width is 0.05 inches CG:\u003c\/p\u003e\n\u003cp\u003eThis material is generally suitable for making capacitors less than 10000PF, 102: refers to the capacity of the capacitor, the first two digits are significant numbers,\u003c\/p\u003e\n\u003cp\u003ethe following 2 indicates how many zeros 102=10×100, that is, = 1000PF J: It is required that the error accuracy of the capacity value of the capacitor is 5%,\u003c\/p\u003e\n\u003cp\u003eand the dielectric material and the error accuracy are paired 500: it is required that the voltage withstand of the capacitor is 50V, and the first two digits of 500 are\u003c\/p\u003e\n\u003cp\u003esignificant numbers, followed by how many zeros there are. N: refers to the end material, now the general end refers to three layers of electrodes (silver\/copper layer),\u003c\/p\u003e\n\u003cp\u003enickel, tin T: It refers to the packaging method, T stands for ribbon packaging, and the color of the chip capacitor, which is usually a little lighter than the cardboard box\u003c\/p\u003e\n\u003cp\u003eyellow and bluish gray, which will have different differences in the specific production process, there is no printing on the chip capacitor, which is related to his production\u003c\/p\u003e\n\u003cp\u003eprocess (the chip capacitor is made of high temperature sintering surface, so there is no way to print on its surface). The patch resistance is made of screen printing (can print marks).\u003c\/p\u003e\n\u003cp\u003eChip capacitors have medium and high voltage chip capacitors and ordinary chip capacitors. The series voltage has 6.3V, 10V, 16V, 25V, 50V, 100V, 200V, 500V, 1000V, 2000V, 3000V,\u003c\/p\u003e\n\u003cp\u003e4000V chip capacitors. There are two dimensional representations, one is expressed in inches. One is expressed in millimeters, and the models of the chip capacitor series are 0201,\u003c\/p\u003e\n\u003cp\u003e0402, 0603, 0805, 1206, 1210, 1812, 2010, 2225 and so on. The material of the chip capacitor is generally divided into three kinds, NPO,X7R,Y5V NPO This material has the most\u003c\/p\u003e\n\u003cp\u003estable electrical performance, almost does not change with the change of temperature, voltage and time, and is suitable for high frequency circuits with low loss and stability requirements.\u003c\/p\u003e\n\u003cp\u003eThe capacity accuracy is about 5%, but this material can only be used for smaller capacity, conventional 100PF below, 100PF-1000PF can also be produced but the price is higher.\u003c\/p\u003e\n\u003cp\u003eX7R This material is less stable than NPO, but the capacity is higher than NPO's material, and the capacity accuracy is about 10%. The capacitance of such media as Y5V is poor in stability,\u003c\/p\u003e\n\u003cp\u003ethe capacity deviation is about 20%, and it is more sensitive to temperature and voltage, but this material can achieve a high capacity, and the price is low, and it is suitable for circuits with\u003c\/p\u003e\n\u003cp\u003elittle temperature change.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e3 Package Editing\u003c\/p\u003e\n\u003cp\u003eChip capacitors: can be divided into non-polar and polar two categories, non-polar\u003c\/p\u003e\n\u003cp\u003eCapacitors The following two types of packages are the most common, namely 0805, 0603; The polar capacitor is what we usually call the electrolytic capacitor, generally we usually\u003c\/p\u003e\n\u003cp\u003euse the most for the aluminum electrolytic capacitor, because its electrolyte is aluminum, so its temperature stability and accuracy are not very high, and the chip element because\u003c\/p\u003e\n\u003cp\u003eof its close to the circuit version, so the temperature stability is required to be high, so the chip capacitor is more than the tantalum capacitor, according to its different voltage\u003c\/p\u003e\n\u003cp\u003eresistance, The chip capacitor can be divided into A, B, C, D four series,\u003c\/p\u003e\n\u003cp\u003eThe specific categories are as follows: Type Package type Withstand voltage\u003c\/p\u003e\n\u003cp\u003eA 3216 10V\u003c\/p\u003e\n\u003cp\u003eB 3528 16V\u003c\/p\u003e\n\u003cp\u003eC 6032 25V\u003c\/p\u003e\n\u003cp\u003eD 7343 35V\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e4 Category Editing\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eClassification of chip capacitors\u003c\/p\u003e\n\u003cp\u003eAn NPO capacitor\u003c\/p\u003e\n\u003cp\u003eTwo X7R capacitors\u003c\/p\u003e\n\u003cp\u003eThree Z5U capacitors\u003c\/p\u003e\n\u003cp\u003eFour Y5V capacitors\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eDifferences: The main difference between NPO, X7R, Z5U and Y5V is their different filling media. Under the same volume, the capacity of the capacitor composed of different\u003c\/p\u003e\n\u003cp\u003efilling media is different, and the resulting dielectric loss and capacity stability of the capacitor are also different. Therefore, when using capacitors, different capacitors should\u003c\/p\u003e\n\u003cp\u003ebe selected according to the different roles of capacitors in the circuit.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e5 NPO capacitors\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eNPO is one of the most commonly used monolithic ceramic capacitors with temperature compensation characteristics. Its filling medium is composed of rubidium, samarium\u003c\/p\u003e\n\u003cp\u003eand some other rare oxides.\u003c\/p\u003e\n\u003cp\u003eNPO capacitors are one of the most stable capacitors in terms of capacitance and dielectric loss. At temperatures from -55 ° C to 125 ° C, the capacitance changes to 0±30ppm\/ ° C,\u003c\/p\u003e\n\u003cp\u003eand the capacitance changes with frequency to less than ±0.3ΔC. The drift or lag of NPO capacitors is less than ±0.05%, which is negligible compared to thin film capacitors greater\u003c\/p\u003e\n\u003cp\u003ethan ±2%. The typical variation in capacity relative to service life is less than ±0.1%. The capacitance and dielectric loss of NPO capacitors vary with frequency depending on the\u003c\/p\u003e\n\u003cp\u003epackage form, and the frequency characteristics of large package size are better than that of small package size. The following table shows the optional capacity range of NPO capacitors.\u003c\/p\u003e\n\u003cp\u003eSealed DC=50V DC=100V\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e0805 0.5---1000pF 0.5---820pF\u003c\/p\u003e\n\u003cp\u003e1206 0.5---1200pF 0.5---1800pF\u003c\/p\u003e\n\u003cp\u003e1210 560---5600pF 560---2700pF\u003c\/p\u003e\n\u003cp\u003e2225 1000pF---0.033μF 1000pF---0.018μF\u003c\/p\u003e\n\u003cp\u003eNPO capacitors are suitable for slot capacitors in oscillators, resonators, and coupling capacitors in high-frequency circuits.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eX7R capacitor\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe X7R capacitor is known as a temperature-stable ceramic capacitor. When the temperature is -55 ° C to 125 ° C, the capacity change is 15%, it should be noted that the\u003c\/p\u003e\n\u003cp\u003ecapacitor capacity change is non-linear at this time.\u003c\/p\u003e\n\u003cp\u003eThe capacity of the X7R capacitor is different under different voltage and frequency conditions, and it also changes with time, changing about 1%ΔC every 10 years,\u003c\/p\u003e\n\u003cp\u003eshowing a change of about 5% over 10 years.\u003c\/p\u003e\n\u003cp\u003eX7R capacitors are mainly used in less demanding industrial applications where the capacity change is acceptable when the voltage changes. Its main feature is that the\u003c\/p\u003e\n\u003cp\u003epower capacity can be relatively large under the same volume. The following table shows the capacity ranges available for X7R capacitors.\u003c\/p\u003e\n\u003cp\u003eSealed DC=50V DC=100V\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e0805 330pF---0.056μF 330pF---0.012μF\u003c\/p\u003e\n\u003cp\u003e1206 1000pF---0.15μF 1000pF---0.047μF\u003c\/p\u003e\n\u003cp\u003e1210 1000pF---0.22μF 1000pF---0.1μF\u003c\/p\u003e\n\u003cp\u003e2225 0.01μF---1μF 0.01μF---0.56μF\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eZ5U capacitor\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eZ5U capacitors are called \"universal\" ceramic monolithic capacitors. The first thing to consider here is the use of temperature range, the main thing for Z5U capacitors is\u003c\/p\u003e\n\u003cp\u003eits small size and low cost. For the above three ceramic monolithic capacitors, it is said that the Z5U capacitor has the largest capacitance under the same volume. However,\u003c\/p\u003e\n\u003cp\u003eits electrical capacity is greatly affected by the environment and working conditions, and its aging rate can decrease by up to 5% every 10 years.\u003c\/p\u003e\n\u003cp\u003eDespite its unstable capacity, due to its small size, low equivalent series inductance (ESL) and equivalent series resistance (ESR), and good frequency response, it has a wide\u003c\/p\u003e\n\u003cp\u003erange of applications. Especially in the application of decoupling circuits. The following table gives the range of values for Z5U capacitors.\u003c\/p\u003e\n\u003cp\u003eSealed DC=25V DC=50V\u003c\/p\u003e\n\u003cp\u003e0805 0.01μF---0.12μF 0.01μF---0.1μF\u003c\/p\u003e\n\u003cp\u003e1206 0.01μF---0.33μF 0.01μF---0.27μF\u003c\/p\u003e\n\u003cp\u003e1210 0.01μF---0.68μF 0.01μF---0.47μF\u003c\/p\u003e\n\u003cp\u003e2225 0.01μF---1μF 0.01μF---1μF\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eOther technical indicators of Z5U capacitors are as follows:\u003c\/p\u003e\n\u003cp\u003eOperating temperature range 10℃ -85 ℃\u003c\/p\u003e\n\u003cp\u003eTemperature characteristic 22% ---- -56%\u003c\/p\u003e\n\u003cp\u003eThe maximum dielectric loss is 4%\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eY5V capacitor\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe Y5V capacitor is a general purpose capacitor with a certain temperature limit, and its capacity can vary from 22% to -82% in the range of -30 ° C to 85 ° C.\u003c\/p\u003e\n\u003cp\u003eY5V's high dielectric constant allows capacitors up to 4.7μF to be manufactured at small physical sizes.\u003c\/p\u003e\n\u003cp\u003eThe following table shows the value range of Y5V capacitors\u003c\/p\u003e\n\u003cp\u003eSealed DC=25V DC=50V\u003c\/p\u003e\n\u003cp\u003e0805 0.01μF---0.39μF 0.01μF---0.1μF\u003c\/p\u003e\n\u003cp\u003e1206 0.01μF---1μF 0.01μF---0.33μF\u003c\/p\u003e\n\u003cp\u003e1210 0.1μF---1.5μF 0.01μF---0.47μF\u003c\/p\u003e\n\u003cp\u003e2225 0.68μF---2.2μF 0.68μF---1.5μF\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eOther technical indicators of Y5V capacitors are as follows:\u003c\/p\u003e\n\u003cp\u003eOperating temperature range -30℃ -85 ℃\u003c\/p\u003e\n\u003cp\u003eTemperature characteristics 22% ---- -82%\u003c\/p\u003e\n\u003cp\u003eThe maximum dielectric loss is 5%\u003c\/p\u003e\n\u003cp\u003eNaming methods for chip capacitors can be found on the AVX website. Different companies may have slightly different naming methods.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eMLCC capacitor selection editing\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eMain MLCC Main manufacturer: ********.\u003c\/p\u003e\n\u003cp\u003eThere are many factors that need to be considered when capacitance shape selection. The following discusses the capacitor shape selection elements of MLCC.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eSelection element\u003c\/p\u003e\n\u003cp\u003e- Parameters: capacitance value, tolerance, voltage resistance, operating temperature, size\u003c\/p\u003e\n\u003cp\u003e- Material\u003c\/p\u003e\n\u003cp\u003e- DC bias effect\u003c\/p\u003e\n\u003cp\u003e- Disabled\u003c\/p\u003e\n\u003cp\u003e- Price and availability\u003c\/p\u003e\n\u003cp\u003eThe properties of different media determine the different applications of MLCC\u003c\/p\u003e\n\u003cp\u003e-C0G capacitors have high temperature compensation characteristics, suitable for use as bypass capacitors and coupling capacitors\u003c\/p\u003e\n\u003cp\u003e-X7R capacitors are temperature-stable ceramic capacitors suitable for less demanding industrial applications\u003c\/p\u003e\n\u003cp\u003eZ5U capacitors are characterized by their small size and low cost and are particularly suitable for use in decoupling circuits\u003c\/p\u003e\n\u003cp\u003eY5V capacitors have the worst temperature characteristics, but large capacity and can replace low-volume aluminum electrolytic capacitors\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eMLCC commonly used C0G(NP0), X7R, Z5U, Y5V and other different media specifications, different specifications have different characteristics and uses. The main difference between\u003c\/p\u003e\n\u003cp\u003eC0G, X7R, Z5U and Y5V is their different filling media. In the same volume due to the filling medium of different capacitor capacity is different, the resulting capacitor dielectric loss,\u003c\/p\u003e\n\u003cp\u003ecapacity stability, etc., is different, so in the use of capacitors should be based on the capacitor in the circuit to choose different capacitors.\u003c\/p\u003e\n\u003cp\u003eFunction editing\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eFunction in a circuit\u003c\/p\u003e\n\u003cp\u003eIn a direct current circuit, a capacitor is equivalent to an open circuit. A capacitor is a device that stores electrical charge and is one of the most commonly used electronic components.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eIt starts with the structure of the capacitor. The simplest capacitor consists of a plate at both ends and an insulating dielectric (including air) in the middle. After power, the plate is charged,\u003c\/p\u003e\n\u003cp\u003eforming a voltage (potential difference), but because of the insulating material in the middle, the entire capacitor is not conductive. However, this is the case without exceeding the critical\u003c\/p\u003e\n\u003cp\u003evoltage of the capacitor (breakdown voltage) under the premise. We know that any substance is relatively insulated, when the voltage at both ends of the substance increases to a certain\u003c\/p\u003e\n\u003cp\u003eextent, the substance can conduct electricity, we call this voltage is called breakdown voltage. The capacitor is no exception, after the capacitor is broken down, it is not an insulator.\u003c\/p\u003e\n\u003cp\u003eHowever, in the middle school stage, such a voltage is not seen in the circuit, so it is working below the breakdown voltage and can be seen as an insulator. Ceramic capacitor\u003c\/p\u003e\n\u003cp\u003eHowever, in AC circuits, because the direction of the current is a certain function of time changes. The process of capacitor charge and discharge is time, this time, the formation of a\u003c\/p\u003e\n\u003cp\u003echanging electric field between the plates, and this electric field is also a function of time change. In fact, the current is passed between capacitors in the form of a field.\u003c\/p\u003e\n\u003cp\u003eIn the middle school stage, there is a saying, called AC, DC resistance, that is, this property of capacitance.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e5 The role of capacitors:\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e1) Bypass\u003c\/p\u003e\n\u003cp\u003eThe bypass capacitor is an energy storage device that provides energy to the local device, which can homogenize the output of the regulator and reduce the load demand. Just\u003c\/p\u003e\n\u003cp\u003elike a small rechargeable battery, the bypass capacitor can be charged and discharged to the device. To minimize impedance, the bypass capacitor should be as close to the power\u003c\/p\u003e\n\u003cp\u003esupply pin and ground pin of the load device as possible. This can well prevent the ground potential elevation and noise caused by too large input value. The ground potential is the\u003c\/p\u003e\n\u003cp\u003evoltage drop when the ground connection passes through a large current burr.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e2) Decoupling\u003c\/p\u003e\n\u003cp\u003eDecoupling, also known as decoupling. In terms of the circuit, it is always possible to distinguish between the driving source and the driven load. If the load capacitance is relatively large,\u003c\/p\u003e\n\u003cp\u003ethe drive circuit to charge the capacitor, discharge, in order to complete the signal jump, when the rising edge is relatively steep, the current is relatively large, so that the drive current\u003c\/p\u003e\n\u003cp\u003ewill absorb a large power current, due to the inductance in the circuit, resistance (especially the inductance on the chip pin, will produce rebound), This current is actually a noise relative\u003c\/p\u003e\n\u003cp\u003eto normal conditions, which will affect the normal operation of the preceding stage, which is the so-called \"coupling\".\u003c\/p\u003e\n\u003cp\u003eThe decoupling capacitor acts as a \"battery\" to meet the changes in the drive circuit current and avoid coupling interference between each other.\u003c\/p\u003e\n\u003cp\u003eCombining bypass capacitors and decoupling capacitors will be easier to understand. The bypass capacitor is actually decoupled, but the bypass capacitor generally refers to the\u003c\/p\u003e\n\u003cp\u003ehigh-frequency bypass, that is, to improve the high-frequency switching noise of a low impedance leakage path. The high-frequency bypass capacitance is generally small, and the\u003c\/p\u003e\n\u003cp\u003eresonant frequency is generally 0.1μF, 0.01μF, etc. The capacity of the decoupling capacitor is generally large, perhaps 10μF or more, depending on the distributed parameters in the\u003c\/p\u003e\n\u003cp\u003ecircuit and the change in the drive current. Bypass is to filter the interference in the input signal as the object, and decoupling is to filter the interference in the output signal as the\u003c\/p\u003e\n\u003cp\u003eobject to prevent the interference signal from returning to the power supply. This should be their essential difference.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e3) Filtering\u003c\/p\u003e\n\u003cp\u003eIn theory (that is, if the capacitor is a pure capacitor), the larger the capacitor, the smaller the impedance, and the higher the frequency of passing. But in fact, more than 1μF\u003c\/p\u003e\n\u003cp\u003ecapacitors are mostly electrolytic capacitors, have a large inductance component, so the impedance will increase after high frequency. Sometimes it will be seen that there is\u003c\/p\u003e\n\u003cp\u003ea large capacitance electrolytic capacitor in parallel with a small capacitor, at which time the large capacitor passes the low frequency and the small capacitor passes the high\u003c\/p\u003e\n\u003cp\u003efrequency. The role of the capacitor is to pass high and low resistance, and pass high frequency and low frequency. The larger the capacitance, the easier it is for low frequencies\u003c\/p\u003e\n\u003cp\u003eto pass through. Specifically used in filtering, large capacitance (1000μF) filter low frequency, small capacitance (20pF) filter high frequency. Some netizens have likened the filter\u003c\/p\u003e\n\u003cp\u003ecapacitor to a \"pond\". Since the voltage at both ends of the capacitor does not change, it can be seen that the higher the signal frequency, the greater the attenuation, it can\u003c\/p\u003e\n\u003cp\u003ebe said that the capacitor is like a pond, and the water amount will not change due to the addition or evaporation of a few drops of water. It converts changes in voltage into\u003c\/p\u003e\n\u003cp\u003echanges in current, and the higher the frequency, the greater the peak current, thereby buffering the voltage. Filtering is the process of charging and discharging.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e4) Energy storage\u003c\/p\u003e\n\u003cp\u003eThe energy storage capacitor collects the charge through the rectifier and transmits the stored energy to the output of the power supply through the converter lead.\u003c\/p\u003e\n\u003cp\u003eAluminum electrolytic capacitors with voltage ratings of 40 ~ 450VDC and capacitance values between 220 ~ 150000 μF (such as EPCOS B43504 or B43505) are more\u003c\/p\u003e\n\u003cp\u003ecommonly used. Depending on the power requirements, the device will sometimes be in series, parallel or a combination of the form, for power levels of more than 10KW\u003c\/p\u003e\n\u003cp\u003epower supplies, usually use a larger volume of can-shaped spiral terminal capacitors.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e7 Edit internal structure\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eIts appearance is made of ceramic, but there is more than one, it is also divided into glass capacitors, oil paper capacitors, electrolytic capacitors and so on.\u003c\/p\u003e\n\u003cp\u003eUsually referred to as Ceramic chip Capacitors refers to MLCC, that is, Multilayer Ceramic Capacitors.\u003c\/p\u003e\n\u003cp\u003eAccording to the material divided into conventional patch capacitance COG (NPO), X7R and Y5V, encapsulating the pin 0201040 2060 3.0805. 1206121, 0181, 2182, 5222.\u003c\/p\u003e\n\u003cp\u003eMultilayer ceramic capacitors (MLCC) are composed of parallel ceramic materials and electrode materials stacked in layers.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e8 Applications\u003c\/p\u003e\n\u003cp\u003eGeneral electronic equipment\u003c\/p\u003e\n\u003cp\u003eMobile device\u003c\/p\u003e\n\u003cp\u003eServer PC Tablet\u003c\/p\u003e\n\u003cp\u003ePower supply circuit\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e9 Features\u003c\/p\u003e\n\u003cp\u003eThe monolithic structure guarantees excellent mechanical strength and high reliability\u003c\/p\u003e\n\u003cp\u003eDue to the good low frequency characteristics of ESR ESL, it is more advantageous to design a loop close to the theoretical value.\u003c\/p\u003e\n\u003cp\u003eLow spontaneous heat due to low ESR can withstand higher ripple current.\u003c\/p\u003e\n\u003cp\u003eInfinitus.\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"margin-left:auto;margin-right:auto;display:block;width:800px\" 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