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The Size Of The Metal Film Capacitor Is Judged According To What

Dongguan Weiqing Electronics Co.,Ltd | Updated: Feb 05, 2019
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1. metal film capacitors are commonly represented by "c" plus numbers in the circuit. the capacitor is an element consisting of two metal films abutting and separated by an insulating material. the  characteristics of the capacitor are mainly dc-dc communication.


七乐彩预测最准十专家the size of the metal film capacitor capacity is the size of the energy that can be stored. the barrier function of the capacitor to the ac signal is called the capacitive reactance, which is related to the frequency and capacitance of the ac signal.


七乐彩预测最准十专家capacitive reactance xc=1/2πf c the types of capacitors commonly used in telephones are electrolytic capacitors, ceramic capacitors, chip capacitors, monolithic capacitors, tantalum capacitors and polyester capacitors.


2. identification method: the identification method of the capacitance is basically the same as the identification method of the resistance, and there are three types: the direct label method, the color scale method and the number standard method. the fundamental unit of the capacitance is expressed in terms of other units: millifarad (mf), microfarad (uf), nanofarad (nf), and picofarad (pf).


where: 1 farad = 103 millifarads = 106 microfarads = 109 nanofarads = 1012 picofarads

the capacity of a large capacity capacitor is directly indicated on the capacitor.

the capacity of a metal film capacitor with a small capacity is represented by a letter or a numerical value on the capacitor.

digital notation: the three-digit number is used to indicate the size of the capacity. the first two digits represent the significant digits and the third digit is the magnification.


3, capacitance capacity error table

symbol f g j k l m

七乐彩预测最准十专家allowable error ±1% ±2% ±5% ±10% ±15% ±20%


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