What is the meaning of the capacitor model name and how to identify capacitors?

l  The model of the domestic capacitor is generally composed of four parts.

The first part , the letter is used to express the main name;

The second part uses letters to represent dielectric materials;

The third part uses letters or numbers to represent categories;

The fourth part represents the serial number in terms of numbers.

l  The capacitor capacity of the identification

Capacitor on the surface of the main parameters of the nominal capacitance, rated voltage and allowable deviation.

1. Ordinary capacitors, from the capacity of the identification of the distinction, there are three main methods :

( 1 ) Direct method with the number and unit symbols directly mark. It is usually expressed in terms of the number of letters  plus digital combinations.

For example : 4n7 means 4.7x10-9F = 4700 pF; 47n means 47 x 10-9 F = 47000 pF = 0.047 F.. 6p8 denotes 6.8 pF.

In addition, sometimes the number is preceded by R, such as R33, representing 0.33F. Sometimes they are represented by four digits greater than 1, and the units are pF, such as 2200 pF. Sometimes the number is less than 1, and the unit is F, such as 0.22 to 0.22 F.. Sometimes they are represented by three integers, the first two are valid, the third is the ratio, and the unit is pF, such as 10x10-3pF.

( 2 ) The character symbol method uses a regular combination of digital and literal symbols to represent capacity. For example, p10 means 0.1 pF; 1p0 means 1 pF; 6P8 denotes 6.8 pF; 22 denotes 2.2 F.

( 3 ) The color mark method uses a color ring or a color point to represent the main parameters of the capacitor. The color standard method of the capacitor is the same as the resistance.

2. Chip Capacitor

 ( 1 ) Flake Ceramic Capacitor Element Labeling Method Some manufacturers have English letters and numbers on the surface of chip capacitors, they represent a specific value, and the capacitance of the capacitor can be estimated by checking the form.

(2). Element marking method for sheet electrolytic capacitor

The parameters needed to be marked in the code of sheet electrolytic capacitors are capacitance and voltage.

The code is composed of 1 letters and 3 numbers. The letter indicates the voltage resistance of the electrolytic capacitor, the 3 numbers represent the capacitance, the unit is pF, the first, second digit number indicates the effective number of the capacitance, and the third digit represents the multiplex. The indicator strip above the sheet electrolytic capacitor indicates that the terminal is the positive pole of the electrolytic capacitor.

If you want to know more, our website has product specifications for the capacitors, you can go to Allicdata Electronics to get more information

Film capacitor : ECH-U1H101JX5