The T491D476M025AS is a tantalum capacitor manufactured by Kemet. It belongs to the T491 series, which are industry-standard solid tantalum capacitors designed for general-purpose applications. This specific part has a capacitance of 47µF and a voltage rating of 25V. It is a surface-mount device, meaning it's designed to be soldered directly onto the surface of a printed circuit board (PCB).

Applications

• Bypass capacitors: Smoothing power supply lines in electronic circuits.
• Coupling capacitors: Blocking DC signals while passing AC signals between different stages of a circuit.
• Filtering capacitors: Removing unwanted noise and ripple from voltage signals.
• Timing circuits: Providing a stable capacitance value for timing applications.
• General-purpose applications: Suitable for a wide range of electronic circuits requiring reliable capacitance.

Features

• Solid tantalum construction: Provides stable performance and long life.
• Surface mount packaging: Enables high-density circuit board assembly.
• Industry-standard case size: Facilitates easy replacement and compatibility.
• RoHS compliant: Free from hazardous substances.
• Wide operating temperature range: Suitable for use in various environmental conditions.

Benefits

• Reliable performance: Tantalum capacitors offer stable capacitance and low leakage current.
• Compact size: Surface mount packaging allows for smaller circuit designs.
• Easy to use: Industry-standard case sizes simplify design and manufacturing.
• Long lifespan: Tantalum capacitors are known for their long operating life.
• Wide range of applications: Suitable for a broad range of electronic circuits.

Additional Details

The T491 series offers a wide range of capacitance and voltage ratings. The ESR (Equivalent Series Resistance) is an important parameter to consider, especially in high-frequency applications. The operating temperature range typically spans from -55°C to +125°C, though derating may be required at higher temperatures. Consult the datasheet for detailed specifications, including ESR, ripple current rating, and leakage current. The D case size indicates the physical dimensions of the component. Tantalum capacitors are polarized components and must be connected with the correct polarity to avoid damage.