The T491A105M035AT7621 is a surface-mount solid tantalum capacitor manufactured by Kemet. It is part of the T491 series, which are known for their general-purpose applications, stable performance, and reliability. This capacitor is commonly used for decoupling, filtering, and bulk capacitance in various electronic circuits.

Applications

• Power Supplies: Used for filtering and decoupling in power supply circuits to reduce noise and ripple.
• Consumer Electronics: Found in devices like smartphones, tablets, and laptops for stable power delivery and signal conditioning.
• Industrial Equipment: Employed in industrial control systems, instrumentation, and automation devices for reliable performance in harsh environments.
• Automotive Electronics: Used in automotive control units (ECUs), infotainment systems, and other automotive applications.
• Medical Devices: Integrated into medical equipment such as patient monitoring systems, diagnostic devices, and imaging equipment.

Features

• Surface Mount Technology (SMT): Designed for automated assembly on printed circuit boards (PCBs).
• Solid Tantalum Construction: Provides stable electrical characteristics and high reliability.
• Molded Case: Offers physical protection and insulation.
• Wide Operating Temperature Range: Suitable for use in a variety of environments.
• RoHS Compliant: Complies with the Restriction of Hazardous Substances directive, ensuring environmental friendliness.
• Stable ESR (Equivalent Series Resistance): Provides consistent performance across a range of frequencies and temperatures.

Benefits

• Stable Performance: Solid tantalum construction ensures stable capacitance and low leakage current over time.
• High Reliability: Proven track record in demanding applications.
• Compact Size: Allows for high-density circuit designs.
• Easy Assembly: Surface mount design facilitates automated assembly processes.
• Long Lifespan: Offers a long operational life with minimal degradation.

Additional Details

Specifically, the T491A105M035AT7621 has a capacitance of 1.0 μF (microfarad) with a tolerance of ±20%. The voltage rating is 35V DC. The 'A' in the part number indicates the case size, which dictates the physical dimensions of the capacitor. The operating temperature range typically extends from -55°C to +125°C. The AT7621 suffix indicates specific packaging and termination options. The ESR value is a critical parameter and is specified in the datasheet, influencing the capacitor's performance in high-frequency applications. It's crucial to consult the datasheet for precise electrical and mechanical specifications, including soldering recommendations and reliability data.