Shenmao Capacitors specialized in aluminum electrolytic capacitors from 1970

The stability of metal film capacitors|Focus on mid-to-high-end brand capacitor manufacturers

by:Shenmao     2021-03-23
Metal film capacitors have excellent electrical characteristics, high stability and long life, and can meet a variety of different applications. At present, capacitor manufacturers have been continuously improving this product to provide greater capacitance in a smaller package size. According to specific applications, capacitor manufacturers can optimize the characteristics of metallized film capacitors by selecting the appropriate dielectric. For example, polyester film shows good characteristics in common applications, with high dielectric constant (making it the highest unit volume capacitance in metalized film capacitors), high insulation strength, self-healing characteristics and good temperature stability Sex. Among all types of metallized film capacitors, polyester capacitors achieve the best volumetric efficiency at a moderate cost, and are the most popular choice for DC applications such as decoupling, blocking, bypass, and noise suppression. The capacitor made of metalized polypropylene film has low dielectric loss, high insulation resistance, low dielectric absorption and high dielectric strength. It is a long-lasting and space-saving solution, and its long-term stability is also very good. Great. These characteristics make metalized polypropylene film capacitors an important choice for applications such as AC input filters, electronic ballasts, and buffer circuits. Polypropylene capacitors can provide rated voltages of 400VAC or higher to meet the requirements of industrial three-phase applications and professional equipment. They can also be used in switching power supplies, frequency discrimination and filter circuits, as well as energy storage and sample and hold applications. In addition, AC and pulse capacitors can be optimized for applications with steep pulses, such as electronic ballasts, motor controllers, switched mode power supplies (SMPS), CRT televisions, and displays or buffers. In these applications, a bimetalized polypropylene film structure with a low-loss dielectric is generally used, which can withstand high voltage and high pulse load applications under high frequency conditions.
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