12101A221KAT2A

The 12101A221KAT2A is a multilayer ceramic capacitor (MLCC) manufactured by AVX, a recognized producer of passive electronic components. This component belongs to the broad family of film and ceramic capacitors widely used in electronic equipment for energy storage, filtering, and signal coupling applications across industrial and consumer markets. Multilayer ceramic capacitors like this part are fundamental building blocks in modern electronics. They function by storing electrical energy in an electric field between conductive plates separated by ceramic dielectric material. These capacitors are essential for power supply filtering, where they smooth voltage ripples and stabilize DC rails in power distribution systems. They are equally important in signal processing circuits for AC coupling, decoupling, and bypass applications, helping to block DC components while allowing AC signals to pass through. The 12101A series designation indicates this is part of AVX's established product line of general-purpose MLLCs. These capacitors typically serve the mainstream industrial, telecommunications, automotive, and consumer electronics segments where reliability and cost-effectiveness are balanced considerations. The "KAT2A" suffix provides information about the specific dielectric formulation, voltage rating class, and termination type—characteristics that determine the component's electrical performance envelope and mechanical construction. Engineers frequently specify AVX MLLCs in this family for applications requiring stable capacitance across operating temperatures, low equivalent series resistance (ESR) for efficient filtering, and proven long-term reliability in high-volume production environments. The multilayer construction provides relatively high capacitance density compared to single-layer alternatives, making these parts attractive when space constraints require compact solutions without sacrificing performance. Common application areas include switching power supplies, DC-DC converters, amplifier circuits, data acquisition systems, and industrial control equipment. In these contexts, the 12101A221KAT2A would typically be selected alongside complementary passive components to achieve desired frequency response, voltage stability, and transient response characteristics. The choice of this specific part number over alternative capacitors depends on matching the component's electrical specifications—including its rated voltage, capacitance value, tolerance class, and temperature coefficient—to the exact requirements of the circuit design. AVX's manufacturing consistency and broad availability through distribution channels make this series a practical choice for OEMs and contract manufacturers seeking to balance performance, cost, and supply chain reliability in their designs.