Ceramic Dialectric Coupling

A class of ceramic dielectrics is further divided into sub classes depending on the temperature characteristics of the materials.

Ceramic dialectric coupling.

Fixed value capacitors can be broadly categorized into two. Polar and non polar capacitors. The ceramic dielectric is characterized by a nonlinear change of capacitance over the temperature range. The ceramic capacitor gains its name from the fact that it uses ceramic materials for its dielectric.

Some of the most common class i dielectrics include c0g and u2j. C0g also commonly known as np0 is an ultra stable dielectric material. This ceramic dielectric material has low relative permittivity. Higher dielectric permittivity and coupling results in higher sensitivity in material type.

The characteristics of a capacitor vary mainly depending on the dielectric material used. The capacitance value also depends on the applied voltage. Dielectric loss factor loss tangent the dielectric loss factor also known as dissipation factor is defined as the tangent of the loss angle tan d the loss factor represents the ratio of resistance to reactance of a parallel equivalent circuit of the ceramic element figure 3. The dielectric material determines the capacitance value energy efficiency and size of a capacitor.

Within the ceramic capacitor family there are many forms of ceramic dielectric that are used. Dielectric constant low dielectric losses and improved electromechanical coupling coefficients. Non polar capacitors include ceramic film and paper capacitors.