1210AA221JAT1A

The 1210AA221JAT1A is a multilayer ceramic capacitor (MLCC) manufactured by AVX, one of the industry's established producers of passive electronic components. This capacitor is housed in a 1210 package, which represents a surface-mount form factor measuring 3.2mm x 2.5mm, making it suitable for compact circuit board layouts while remaining practical to handle and inspect during assembly. Multilayer ceramic capacitors like this component are fundamental building blocks in modern electronics, serving critical roles in filtering, coupling, decoupling, and energy storage applications across numerous industries. The 1210 package size positions this capacitor in the mid-range for surface-mount applications—larger than smaller 0603 or 0805 packages, offering better capacitance density and voltage handling capabilities, yet still compact enough for space-constrained designs. AVX's multilayer ceramic capacitors in this series are widely used in industrial control systems, telecommunications equipment, power supply circuits, automotive electronics, and consumer electronics. Engineers commonly specify them in applications requiring reliable filtering of power supply rails, AC coupling between amplifier stages, and bypass functions in high-frequency circuits. The ceramic dielectric material provides good stability across temperature ranges typical in industrial environments, making these components suitable for applications with moderate ambient temperature variations. The "AA" designation in this part number indicates a specific dielectric class within AVX's product family, typically representing a composition optimized for capacitance stability and general-purpose performance across a reasonable operating temperature window. This makes the component appropriate for applications where extreme temperature performance or ultra-stable capacitance values are not critical requirements, but reliable operation in standard industrial conditions is essential. The 1210 package also offers practical advantages during manufacturing and field service. The larger size compared to miniature packages reduces the risk of placement errors during automated assembly, simplifies rework procedures if needed, and allows adequate spacing for solder joint inspection. For engineers redesigning legacy systems or upgrading circuit boards, the 1210 package strikes a balance between modern compactness and manufacturing practicality. When selecting this specific part number, engineers might choose it over smaller alternatives when circuit board real estate permits, valuing the improved handling characteristics and generally higher voltage or capacitance options available in the larger package. Compared to film capacitors or other dielectric types, ceramic capacitors provide cost efficiency and performance reliability that makes them the standard choice for most general industrial applications where the capacitor is not the circuit's critical path component.