Aluminum-Polymer Capacitors are a special type of capacitor, which are key electronic components used to store electrical energy temporarily in an electric field. They are distinguished by their use of a polymer electrolyte instead of the typical liquid or solid electrolytes found in other capacitors. Their main functions include filtering, decoupling, energy storage, and tuning. They stand out due to their low Equivalent Series Resistance (ESR), high frequency capacity, improved stability over temperature and voltage, and their compact form factor, proving them to be exceptional for applications that require high performance in a small package.
Specific applications for Aluminum-Polymer Capacitors often include digital devices, power supplies, and automotive applications, especially where the design requires high capacitance and low ESR. These capacitors are particularly suited to smoothing and filtering in power supplies, including in switch-mode power supplies (SMPS). Major manufacturers of Aluminum-Polymer Capacitors include Panasonic, KEMET, TDK, AVX, and Nichicon.
