"Polyester Capacitor-The Polyester Capacitor consists of two metal foil electrodes, which are sandwicted in an extremely thin insulating medium and rolled into a cylindrical or flat cylindrical core. Polyester film capacitors are used as the dielectric capacitor. They have a high dielectric constant, small size, large capacity, and good stability.
Advantages: The precision, loss Angle, insulation resistance, temperature characteristics, reliability and adaptability to the environment of the film capacitor are better than the electrolytic capacitor, ceramic capacitor two kinds of capacitors.
Purpose: Used in various DC or low frequency pulse circuit. Suitable for use as a bypass capacitor.
Parameter identification
Capacitor voltage values are usually represented by letters to represent the cardinality. Common codes and cardinality correspondence are:

A: 1.0; B: 1.25; C: 1.6; D: 2.0; E: 2.5; F: 3.15; G4.0;

H: 5.0; J: 6.3; K: 8.0; Z: 9.0;

The numbers before the letters represent powers of 10, such as 2A, which is 102*1.0=100V, 2C, 102*1.6=160V, and so on.

The letter at the end of the voltage stands for capacitance in pF.

For example, 823 means 82*10^3=82000Pf, 224 means 22*104=220000pf=0.22μF; The final letter indicates accuracy, such as J for tolerance tolerance of ±5%, and so on.

Typical capacitance mark example: 2A823J is 82000Pf±5%, withstand voltage 100V. Letter and meaning of allowable deviation of capacitor capacity:

Letter meaning

F ±1%

G ±2%

J ±5%

K ±10%

M ±20%

N ±30%

For example, 104K represents a capacity of 100000Pf=0.1 μ f. The allowable deviation of capacity is ± 10%.

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