Yageo KEMET A798 aluminum organic capacitor

The Yageo KEMET A798 Aluminum Organic Capacitor (AO-CAP) is a solid state aluminum capacitor. The cathode is a conductive organic polymer, which results in very low ESR and improved capacitance retention at high frequency. AO- CAPs may be operated at steady state voltages up to 100% of rated voltage without the need to de-rate.

Since there is no liquid electrolyte, the A798 offers long operational lifetimes, low ESR, and high operational temperatures. The inherent low ESR renders the A798 suitable for high ripple current handling. The small package size, high ripple current capability, high operating temperature, low parasistics, and capacitance stability over life span makes the A798 ideal for demand applications.

The A798 high humidity and high temperature aluminium polymer capacitors deliver higher capacitance and ESR stability under harsh environmental conditions. Enhancements to the design and selected material upgrades were introduced to deliver 1,000hours at 85°C/85% RH rated voltage and 125°C endurance life and storage.

Features

• Minimum ESR up to 3mΩ
• Polymer cathode technology
• High frequency capacitance retention
• Non-ignition failure mode
• 100% accelerated steady state aging
• 100% surge current tested
• Volumetric efficiency
• Self-healing mechanism
• EIA standard case sizes

Applications

• Typical applications include DC/DC converters, notebook PCs, telecommunications, displays, and industrial applications with harsh humidity and temperature requirements.