12065C104JAT4A

The 12065C104JAT4A is a multilayer ceramic capacitor (MLCC) manufactured by AVX, one of the industry's established capacitor producers. This component belongs to the general family of surface-mount ceramic capacitors widely used across industrial electronics, consumer devices, and telecommunications equipment. Multilayer ceramic capacitors are fundamental passive components that store and release electrical energy. They are constructed from alternating layers of ceramic dielectric material and metal electrodes, which provides high capacitance density in a small package. The 12065 designation indicates this is a 1206-sized chip capacitor, a standard package dimension measuring 3.2 mm by 1.6 mm. This size represents a popular middle ground in surface-mount capacitor offerings—larger than 0603 or 0805 packages, but smaller and more space-efficient than 1210 or larger formats. The "104J" portion of the part number provides key information about the component's electrical characteristics. The "104" indicates a capacitance value of 100 nanofarads (0.1 microfarads), a value commonly used for decoupling, coupling, and filtering applications throughout circuit designs. The "J" designates the tolerance class, meaning the actual capacitance will fall within a specified range around the nominal value. AVX's "AT" series designation generally points to components designed for general-purpose industrial and commercial applications with reliable performance across standard operating conditions. This capacitor type is specified in applications including power supply filtering, signal coupling and decoupling, noise suppression, and impedance matching. Engineers frequently use these components in the power distribution networks of microprocessors and digital logic circuits, where they suppress voltage transients and maintain stable supply voltages. They also appear in analog signal paths, RF circuits, and motor control systems. Designers often select the 12065 package size when component density matters but larger packages would waste valuable PCB real estate. Compared to larger capacitors, the 1206 offers easier placement and better high-frequency performance due to reduced lead inductance. When specifying the 12065C104JAT4A specifically, engineers value AVX's manufacturing reputation for consistency and reliability, along with the established availability of this standard package and value combination across the supply chain. The multilayer ceramic construction inherently provides good frequency response, making these capacitors suitable for applications ranging from DC filtering to several gigahertz in RF circuits, depending on circuit design and implementation.