Capacitors are manufactured in many styles, forms, dimensions, and from a large variety of materials. They all contain at least two electrical conductors, called plates, separated by an insulating lay
Some different capacitors for electronic equipment
Stacked paper capacitor from 1923 for noise decoupling (blocking) in telegraph lines
Wound metallized paper capacitor from the early 1930s in hardpaper case, capacitance value specified in "cm" in the cgs system; 5,000 cm corresponds to 0.0056 μF.
Folded wet aluminum electrolytic capacitor, Bell System 1929, view onto the folded anode, which was mounted in a squared housing (not shown) filled with liquid electrolyte
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 electro
Capacitor types
…decoupling or bypassing capacitors. Often, more than one capacitor family is employed for these applications, e.g. interference suppression can use ceramic capacitors or film capacitors. Other kinds of capacitors are discussed in the #Special capacitors section…
A typical ceramic through-hole capacitor
A selection of ceramic capacitors: fixed leaded disc capacitors on the left and right; multilayer ceramic chip capacitors (MLCC) in the middle
Ceramic tube capacitor, the typical style of ceramic capacitors in the 1950s and 1970s
MLCCs as decoupling capacitors around a microprocessor