1812AC821KAT1A

The AVX 1812AC821KAT1A is a multilayer ceramic capacitor (MLCC) designed for general-purpose applications across industrial, consumer, and commercial electronics. This component belongs to the popular 1812 package family, which refers to its physical dimensions (0.18 x 0.12 inches or approximately 4.6mm x 3.2mm), making it suitable for standard PCB assembly processes including both automated and manual placement. Multilayer ceramic capacitors like this unit are foundational passive components widely used for energy storage, signal coupling, filtering, and decoupling applications in electronic circuits. The 1812 package size offers a practical balance between compact footprint and capacitance density, making it a preferred choice for space-constrained designs that still require reasonable capacitance values. This particular part carries the "AC" designation within AVX's product nomenclature, indicating it belongs to their established commercial-grade capacitor line designed for reliable mid-range performance requirements. Engineers typically specify this component in power supply circuits, audio equipment, RF applications, data acquisition systems, and general industrial control electronics where stable capacitive performance is needed. The 1812 form factor is particularly common in legacy and modern designs alike, ensuring broad compatibility with existing PCB layouts and manufacturing standards. The ceramic dielectric technology provides excellent frequency response characteristics and low ESR (equivalent series resistance) relative to other dielectric options, which proves beneficial in high-frequency filtering and transient suppression roles. The part's construction using multiple ceramic layers and internal electrodes allows manufacturers to achieve higher capacitance values within the compact package compared to single-layer designs. This makes the 1812AC series economically attractive for volume applications where cost-per-function matters significantly. AVX's commercial-grade designation suggests this component meets standard temperature stability and reliability requirements suitable for industrial environments, though actual performance specifications should be verified for your specific application requirements. Designers choose the 1812AC821KAT1A when they need a proven, readily available capacitor with consistent performance across standard operating conditions. The widespread adoption of this package size means broad component availability from multiple distributors and a well-established supply chain, reducing procurement risk for both prototype and production applications. When evaluating alternatives, engineers typically consider capacitance value, voltage rating, temperature coefficient, and physical constraints—all factors where the 1812 platform offers mature, well-documented solutions.