Capacitors

Capacitors are essential passive components for energy storage, filtering, decoupling, timing, and signal coupling in electronic circuits. This category covers MLCC (multilayer ceramic), tantalum, aluminum electrolytic, film, polymer, and supercapacitors (EDLC). Key selection parameters: capacitance (pF to farads), voltage rating (DC working voltage with derating guidelines), dielectric type (C0G/NP0, X7R, X5R, Y5V for MLCC), ESR (equivalent series resistance), ripple current handling, temperature range, and package size (008004 to 2220 SMD, radial/axial leaded). Application-specific types include safety-certified X/Y capacitors for AC line filtering, automotive-grade MLCCs (AEC-Q200), low-ESL capacitors for high-speed decoupling, and high-temperature capacitors rated to 150°C+. Popular manufacturers: Murata, Samsung Electro-Mechanics, TDK, Taiyo Yuden, KEMET, Vishay, Nichicon, and Panasonic.