08055A821KAT4A

# Product Description The 08055A821KAT4A is a multilayer ceramic capacitor (MLCC) manufactured by AVX, one of the industry's established producers of passive electronic components. This capacitor belongs to the 0805 package family, which is one of the most widely used surface-mount component sizes in modern electronics manufacturing. The 0805 footprint measures 2.0mm by 1.25mm, making it suitable for high-density PCB layouts while remaining large enough for reliable assembly and rework processes. Multilayer ceramic capacitors like this part are fundamental building blocks in virtually every category of electronic equipment. They serve critical functions including power supply filtering, signal coupling and decoupling, noise suppression, and energy storage in timing circuits. The compact 0805 package is particularly valued in consumer electronics, telecommunications infrastructure, industrial control systems, automotive electronics, and medical devices where space constraints are significant but performance cannot be compromised. The "A" designation in AVX's naming convention typically indicates a specific dielectric material formulation within their product line. AVX offers multilayer ceramic capacitors across several dielectric classes, each optimized for different application requirements. Some formulations prioritize high capacitance density, while others emphasize stability across temperature ranges or reduced voltage coefficient. The specific dielectric class of this part number determines its suitability for particular circuit roles. Engineers select this specific part number over alternatives based on several factors. AVX's manufacturing reputation and quality standards make their capacitors preferred in applications where reliability is non-negotiable. The established 0805 package ensures compatibility with standard pick-and-place equipment and existing PCB designs, reducing qualification risk and manufacturing complexity. For OEM customers managing large bills of materials, maintaining consistent suppliers and package types across product families reduces procurement overhead and supply chain complications. The 0805 package format also provides superior performance characteristics compared to smaller alternatives in many applications. The larger surface area facilitates better thermal management, and the package geometry supports lower equivalent series resistance (ESR) and inductance (ESL) compared to miniature packages, which is important in high-frequency filtering applications. This capacitor would typically be stocked by distributors serving design engineers and manufacturing operations that require reliable passive components for prototype development, qualification builds, and high-volume production runs. The 0805 MLCC remains the volume standard across multiple industries, ensuring this part number remains relevant for established and new designs alike.