1206AA390JAT3A

The 1206AA390JAT3A is a multilayer ceramic capacitor (MLCC) manufactured by AVX, housed in a standard 1206 surface-mount package. This compact form factor measures approximately 3.2mm × 1.6mm and is one of the most widely used component sizes in modern electronics due to its balance of capacitance density, ease of assembly, and compatibility with automated manufacturing processes. As a ceramic capacitor, this component is designed to store electrical charge and is commonly used for decoupling, filtering, and bypass applications across numerous industrial and commercial electronic systems. The 1206 package size makes it ideal for space-constrained designs where multiple capacitors must be placed on a circuit board, yet it offers sufficient lead spacing for reliable soldering on standard PCB assembly equipment. AVX's 1206 series capacitors are typically specified in applications requiring stable performance across standard operating temperature ranges and moderate voltage levels. Common use cases include power supply filtering in industrial control systems, signal conditioning circuits, timing applications, and general board-level noise suppression. These capacitors are particularly valuable in environments where reliability and consistent performance matter, such as factory automation, telecommunications infrastructure, test and measurement equipment, and consumer electronics. The 1206 package is especially popular in cost-sensitive high-volume production where per-unit component cost must remain low while maintaining adequate performance margins. Engineers often specify this size when designing boards that need to meet both mechanical constraints and electrical performance requirements without requiring specialized or exotic component values. When selecting the 1206AA390JAT3A specifically, engineers benefit from AVX's established manufacturing quality standards and the extensive availability of this part across multiple suppliers and inventory channels. This wide availability reduces procurement risk and lead time uncertainty compared to more specialized alternatives. The 1206 form factor also provides superior thermal characteristics compared to smaller packages, which can be important in applications with elevated ambient temperatures or high-frequency switching environments. The ceramic dielectric material used in MLCCs provides good frequency stability, making them suitable for both DC filtering and AC signal applications. Their low equivalent series resistance (ESR) characteristics make them particularly effective in modern switching power supplies and high-speed digital circuits where fast charge/discharge cycles are required. For engineers designing systems requiring general-purpose capacitive filtering and energy storage in a proven, mainstream package size, the 1206 MLCC represents a reliable, cost-effective solution backed by extensive design reference materials and real-world field experience across countless industrial applications.