Polymer capacitor
Encyclopedia
Polymer capacitors, polymerized organic semiconductor solid-electrolyte capacitors and conductive polymer capacitors with different chemistry, are types of electrolytic capacitor
Electrolytic capacitor
An electrolytic capacitor is a type of capacitor that uses an electrolyte, an ionic conducting liquid, as one of its plates, to achieve a larger capacitance per unit volume than other types. They are often referred to in electronics usage simply as "electrolytics"...

 with solid, rather than the more usual liquid, electrolyte. Names used for similar technologies are OS-CON
OS-CON
OSCON or OS-CON is a Sanyo trademark for their polymer capacitors. The name is used for polymerized organic semiconductor solid-electrolyte capacitors and conductive polymer capacitors with different chemistry.-Characteristics:...

 (Sanyo
Sanyo
is a major electronics company and member of the Fortune 500 whose headquarters is located in Moriguchi, Osaka prefecture, Japan. Sanyo targets the middle of the market and has over 230 Subsidiaries and Affiliates....

 trademark
Trademark
A trademark, trade mark, or trade-mark is a distinctive sign or indicator used by an individual, business organization, or other legal entity to identify that the products or services to consumers with which the trademark appears originate from a unique source, and to distinguish its products or...

), Aluminum Organic Polymer Capacitors (AO-CAPS), Organic Conductive Polymer Aluminum Electrolytic Capacitor (OC-CON).

Characteristics

  • Some types have longer life at higher cost than standard (liquid) electrolytics. 50Khours life at 85 °C. Others are specified typically for guaranteed 1000 hours at 105 °C.
  • Equivalent series resistance
    Equivalent series resistance
    Practical capacitors and inductors as used in electric circuits are not ideal components with only capacitance or inductance. However, they can be treated to a very good approximation as ideal capacitors and inductors in series with a resistance; this resistance is defined to be the equivalent...

     (ESR) is lower than electrolytic of same value, and stable under varying temperature, unlike standard electrolytics.
  • Working voltage up to around 35 V
    Volt
    The volt is the SI derived unit for electric potential, electric potential difference, and electromotive force. The volt is named in honor of the Italian physicist Alessandro Volta , who invented the voltaic pile, possibly the first chemical battery.- Definition :A single volt is defined as the...

    .

Construction

  • Cathode is aluminum foil.
  • A separator sheet is impregnated with electrolyte.
  • Anode is aluminum foil with an oxide layer.


Sandwich is rolled and assembled into a leaded or surface-mount can.
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