Ceramic capacitor electrode material standards

What is a ceramic capacitor?

A ceramic capacitor is a fixed-value capacitor where the ceramic material acts as the dielectric. It is constructed of two or more alternating layers of ceramic and a metal layer acting as the electrodes. The composition of the ceramic material defines the electrical behavior and therefore applications.

What is the temperature coefficient of a Class 1 ceramic capacitor?

In addition to the EIA code, the temperature coefficient of the capacitance dependence of class 1 ceramic capacitors is commonly expressed in ceramic names like "NP0", "N220" etc. These names include the temperature coefficient (α).

What is a fixed value ceramic capacitor?

A fixed-value ceramic capacitor uses a ceramic material as the dielectric. It comprises two or more ceramic layers that alternate with a metal electrode layer . The electrical behavior and, thus, the uses of ceramic materials are determined by their composition.

What is the impedance of a ceramic capacitor?

Data sheets of ceramic capacitors only specify the impedance magnitude . The typical impedance curve shows that with increasing frequency, impedance decreases, down to a minimum. The lower the impedance, the more easily alternating currents can pass through the capacitor.

What are the three classes of ceramic capacitors?

Depending on the operating temperature, relative permittivity, stability, and aging values, the ceramic capacitor is classified into three classes, that is, Class—I, Class—II & Class—III. The ceramic materials used for various classes of ceramics are given in Table 1.3. Table 1.3. Class of ceramics.

What is the voltage proof of ceramic capacitors?

The voltage proof of ceramic capacitors is specified as rated voltage (UR). This is the maximum DC voltage that may be continuously applied to the capacitor up to the upper temperature limit. This guaranteed voltage proof is tested according to the voltages shown in the adjacent table.