passive electronic component

  There are four main types of chip inductors, namely   wire-wound inductors , laminated, woven and thin-film chip inductors. Two types of wire-wound type and laminated type are commonly used. The former is a miniaturized product of traditional wire-wound inductors, while the latter is made using multi-layer printing technology and laminated production technology. The volume is smaller than that of wire-wound chip inductors. It is a key product developed in the field of inductive components. 1. Winding type It is characterized by a wide range of inductance, high inductance accuracy, low loss (that is, large Q), large allowable current, strong manufacturing process inheritance, simplicity, and low cost, but the disadvantage is that it is limited in further miniaturization. . Ceramic core winding inductors can maintain a stable inductance and a relatively high Q value at such a high frequency, and thus occupy an important position in the high-frequency loop. The winding point of TDK'

  Adjustable resistor  is an electronic component that is very common in instrumentation, security equipment, and home appliance control boards. The adaptation of adjustable resistor is mainly considered from the perspective of the voltage dividers. The resistance value R on both sides of the resistor can be relatively accurate and stable. , The power of the adjustable resistor is small, and the absolute accuracy can be ignored, which is mainly considered from the current controller. The following lists the matters needing attention in the use of adjustable resistors: 1. The power of the adjustable resistor can withstand the ambient temperature of 70 degrees Celsius, and other functions may be lost when the operating temperature is higher than 70 degrees Celsius. 2. The surface of the adjustable resistor should avoid the presence of water droplets and avoid using it in a humid place. 3. The rotating operating force of the adjustable resistor will become lighter as the temperature rises

  The introduction of   NTC thermistor resistor , NTC (negaTive Temperature Coefficient) refers to the thermistor phenomenon and material with a negative temperature coefficient and the resistance decreases exponentially as the temperature rises. The material is a semiconductor ceramic made of two or more metal oxides such as manganese, copper, silicon, cobalt, iron, and zinc, which are fully mixed, molded, and sintered. It can be made into a thermistor with a negative temperature coefficient (NTC), in which the resistivity and material constant vary with the material composition ratio, sintering atmosphere, sintering temperature and structural state. At present, non-oxide NTC thermistor materials represented by silicon carbide, tin selenide, and tantalum nitride are also available. NTC thermal semiconducting ceramics are mostly oxide ceramics with a spinel structure or other structures, which have a negative temperature coefficient. The resistance value can be approximated as: RT0 is