According to structure, capacitors are classified as: The capacitors are classified into two types according to polarization: A polarized capacitor is an important electronic circuit component and is often termed an electrolytic capacitor. These capacitors are used to achieve high capacitive density.
The specifications of capacitors are: 1. Capacitance Value The value of the capacitor is measured in terms of its capacitance value and is expressed in farads, microfarads, and nanofarads. 2. Voltage Rating
The value of the capacitor is measured in terms of its capacitance value and is expressed in farads, microfarads, and nanofarads. 2. Voltage Rating Voltage rating is the operating voltage of the capacitor and it is measured in volts. 3. Temperature Co-efficient
Depending on the type of metal and electrolyte used, the electrolytic capacitors are classified into the following types. Aluminum electrolytic capacitors – aluminum oxide (dielectric). Tantalum electrolytic capacitors – tantalum pentoxide (dielectric). Niobium electrolytic capacitors – niobium pentoxide (dielectric). Aluminum electrolytic
Depending on the type of capacitor, the values of the capacitor vary. For example, electrolytic capacitors have their values printed on their body along with the pins. Disc capacitors have their values represented in terms of PF, uF, KPF, etc. a black band is used to represent the negative terminal of the capacitor.
Standard, bi-polar, and polymer types are included. Figure 5: An illustration of the range of voltage/capacitance ratings for aluminum capacitors available through DigiKey at the time of writing. The primary strength of aluminum capacitors is their ability to provide a large capacitance value in a small package, and do so for a relatively low cost.