Polymer capacitor lowers impedance in high-frequency power rails

High-speed processors and power converters need local energy storage that can respond quickly to load changes, while occupying a minimal board area. The EEF-CX0J101R uses a conductive polymer electrolyte and laminated surface-mount construction to provide low equivalent series resistance (ESR). This helps to suppress noise and stabilize voltage rails around central processing units (CPUs), power modules, and compact electronic equipment.

The laminated construction also supports a low profile, making the capacitor suitable for densely packed boards. Low height can help engineers to place capacitance close to the load, where impedance and layout parasitics matter most.

In high-frequency applications, low ESR helps the capacitor respond to fast current demand. This is useful in dc-dc converter outputs, processor backup rails, and systems exposed to high-speed, high-current load fluctuations.

The EEF-CX0J101R is part of the CX series of conductive polymer aluminum electrolytic capacitors, designed for general electronic equipment rather than automotive, accelerator, or other continuous high-load applications.

The KX, JX, and TX series of SP-Caps also offer outstanding endurance, ensuring a long service life even under high-temperature and high-humidity conditions. This makes the capacitors ideal for constant high-load applications, such as AI servers.