Polymer Capacitors use a conductive polymer as the electrolyte, providing low equivalent series resistance (ESR) and high capacitance. These capacitors are commonly used in applications such as power supply filtering, voltage regulation, and decoupling. Polymer capacitors offer improved performance over traditional electrolytic capacitors, with better stability and longer lifespan.

With their low ESR and high ripple current handling, polymer capacitors are ideal for high-speed and power-demanding applications. These capacitors are commonly found in modern electronics, including computer motherboards, power supplies, and industrial control systems.