The T491A225K020AS is a surface mount solid tantalum capacitor manufactured by Kemet. This capacitor belongs to the T491 series, which is renowned for its general-purpose applications, dependable performance, and robust reliability. Primarily, it's implemented for decoupling, filtering, and as a bulk capacitor within diverse electronic circuit designs.

Applications

• Decoupling in Digital Circuits: Provides local decoupling for integrated circuits, reducing noise and voltage fluctuations on the power rails.
• Filtering in Analog Circuits: Used in filter circuits to smooth out unwanted signals and noise in analog signal processing applications.
• Bulk Capacitance in Power Supplies: Stores energy and provides a stable voltage source in power supply circuits.
• Timing Circuits: Implemented in timing circuits for precise control and delay functions.
• Signal Coupling: Facilitates the transfer of AC signals while blocking DC signals between different circuit stages.

Features

• Surface Mount Design: Allows for automated placement and soldering on printed circuit boards.
• Solid Tantalum Construction: Offers high stability, reliability, and volumetric efficiency.
• Molded Case: Provides physical protection and electrical insulation.
• RoHS Compliant: Adheres to the Restriction of Hazardous Substances directive, promoting environmental responsibility.
• Stable Electrical Characteristics: Maintains consistent performance over a wide range of temperatures and frequencies.

Benefits

• Improved Circuit Performance: Reduces noise and improves the stability of electronic circuits.
• Increased Reliability: Solid tantalum construction ensures long-term reliability and minimal degradation.
• Compact Size: Allows for high-density circuit designs and miniaturization of electronic devices.
• Easy Assembly: Surface mount design simplifies the manufacturing process and reduces assembly costs.

Additional Details

Specifically, the T491A225K020AS features a capacitance of 2.2 μF (microfarads) with a tolerance of ±10%. Its voltage rating is 20V DC. The case size 'A' dictates its physical dimensions, which are important for PCB layout. The operating temperature range typically spans from -55°C to +125°C. The suffix 'AS' indicates specific packaging and termination options. The Equivalent Series Resistance (ESR) is an important characteristic to consider, particularly in high-frequency applications, and detailed specifications should be obtained from the manufacturer's datasheet. Referencing the datasheet will also provide precise information regarding soldering profiles and reliability data.