passive electronic component

  The main role of a capacitor Capacitors  play an important role in circuits such as tuning, bypassing, coupling, and filtering. With the rapid development of electronic information technology, the update speed of digital electronic products is getting faster and faster. The sales of consumer electronic products such as flat-panel TVs (LCD and PDP), notebook computers, digital cameras and other products continue to grow, which drives capacitors. Industry growth. So what is the main function of the capacitor? 1. Bypass The bypass capacitor is an energy storage device that provides energy for the local device. It can uniformize the output of the regulator and reduce the load demand. Just like a small rechargeable battery, the bypass capacitor can be charged and discharged to the device. In order to minimize the impedance, the bypass capacitor should be as close as possible to the power supply pin and ground pin of the load device. This can well prevent the ground potential rise and nois

  The practical application of multilayer inductors and the four main points of attention Multilayer inductors  are non-wound inductors. The commonly used sizes are 0402, 0805, 0603, 1206, 1210, 1812, etc. The multilayer inductors have good magnetic shielding, high sintering density, and good mechanical strength. They are comparable to wire-wound inductors. Compared with the small size, it is conducive to the miniaturization of the circuit, the magnetic circuit is closed, it will not interfere with the surrounding components, and will not be interfered by the surrounding components, which is conducive to the high-density installation of the components; Laminated integrated structure, high reliability, good heat resistance, good solderability, regular shape, suitable for automated surface mounting production. The disadvantage is that the pass rate is low, the cost is high, the inductance is small, and the Q value is small. At present, laminated inductors are widely used in notebook comp

  Engineers need to know how components fail The failure of  components  is directly affected by factors such as temperature, humidity, voltage, and machinery. The effect of temperature changes on capacitance The temperature change will cause the dielectric loss of the capacitor to change, thereby affecting its service life. When the temperature rises by 10°C, the life of the capacitor is reduced by 50%, and at the same time, it also causes a change in the resistance-capacitance time constant, and even thermal breakdown due to excessive dielectric loss. In addition, the increase in temperature will also reduce the insulation performance of inductors, transformers, chokes, etc. Humidity causes failure When the humidity is too high, when dust containing acid and alkali falls on the circuit board, it will corrode the solder joints and wiring of the components, causing the solder joints to fall off and the joints to break. Excessive humidity is also the main cause of leakage coupling. Exce

  The practical application of laminated inductors and four key points for attention Laminate inductors  are non-wound inductors. Commonly used sizes are 0402, 0805, 0603, 1206, 1210, 1812, etc. The multilayer inductor has good magnetic shielding, high sintering density, and good mechanical strength. Compared with wire-wound inductors, the size is smaller, which is conducive to the miniaturization of the circuit, the closed magnetic circuit will not interfere with the surrounding components, and will not be interfered by the surrounding components, which is conducive to the high-density installation of components. Laminated integrated structure, high reliability, good heat resistance, good solderability, regular shape, suitable for automated surface mounting production. The disadvantages are low pass rate, high cost, small inductance, and low Q value. At present, multilayer inductors are widely used in notebook computer digital TVs, digital video recorders, lists and hard drives, perso

  The principle of passive electronic component failure The failure of the  passive electronic component  is affected by factors such as humidity, temperature, voltage, and machinery. The effect of temperature changes on capacitance The temperature change will cause the dielectric loss of the capacitor to charge, thereby affecting its service life. When the temperature rises by 10°C, the life of the capacitor is reduced by 50%, and at the same time, it also causes a change in the resistance-capacitance time constant, and even a thermal breakdown occurs due to excessive dielectric loss. In addition, the increase in temperature will also reduce the insulation performance of inductors, transformers, chokes, etc. Temperature causes failure If the temperature is too high， when dust containing acid and alkali falls on the circuit board, it will corrode the solder joints and wiring of the components, causing the solder joints to fall off and the joints to break. Excessive temperature is also

  Kraft paper tape  is mainly used in industry. For example, the shielding of carton printing, the disposal of the appearance of clothing, the packaging of heavy objects and so on. Kraft paper tape is divided into water-free kraft paper tape, high temperature resistant kraft paper tape, wet water kraft paper tape, white kraft paper tape, wired kraft paper tape and so on. Wet water kraft paper tape can be used for printing. Water-free kraft paper tape is made of high-strength kraft paper and coated with heat-sensitive adhesive. The wet water kraft paper tape is made of kraft paper as the base material and modified starch as the adhesive. It can produce stickiness in front of wet water, and has the characteristics of writing on kraft paper. It is suitable for export carton sealing or covering the handwriting of the carton. Self-adhesive kraft paper tape is made of coated kraft paper and coated with acrylic glue or natural rubber glue. It has waterproof, strong adhesion, high tensile stre