Ceramic Capacitors

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We offer several types of MLCC and ceramic (disc) capacitors, and capacitor arrays.

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. There are two types of ceramic capacitor – MLCC and ceramic disc – see below. The composition of the ceramic material defines electrical behaviour and therefore applications. Ceramic capacitors are divided into two application classes:
  1. Class 1 ceramic capacitors offer high stability and low losses for resonant circuit applications.
  2. Class 2 ceramic capacitors offer high volumetric efficiency for buffer, by-pass, and coupling applications.

What is a ceramic capacitor used for?

Ceramic capacitors may be used as general-purpose types as they are non-polarized and come in a variety of capacitances, voltage ratings, and sizes. They are the most common capacitors used in electrical circuits. They are typically employed in applications that need small physical size as well as a significant charge storage capacity.

Applications include:

  1. Tone compensation
  2. Volume control RF bypass
  3. Lighting ballasts
  4. Automatic volume control filtering
  5. Antenna coupling
  6. Resonant circuit
  7. Class 2 high-power capacitors are used in high voltage laser power supplies, power circuit breakers, induction furnaces, and more
  8. Ceramic disc capacitors are used across brush DC motors to minimise RF noise.
  9. MLCC capacitors used in printed circuit boards (PCBs) are rated for voltages from only a few volts up to several hundreds of volts, depending on the application.

What are the two types of ceramic capacitor?

Two types of ceramic capacitor are widely used in modern electronics: multilayer ceramic (MLCC) and ceramic disc. Ceramic capacitors typically have small capacitances between 1 nF and 1 μF, are low maximum rated voltage compared with electrolytic capacitors, and are nonpolarized. MLCCs are much smaller than disc capacitors and are therefore used in surface mount devices.