T491C105K050AS-F

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Tantalum capacitors are used in a wide variety of applications and are found in an ever-increasing number of electronics products. The T491C105K050AS-F is a high voltage surface mount thin film chip tantalum capacitor, rated for 50 volts (V). This particular capacitor is commonly found in applications in consumer electronics, automotive electronics and other high-reliability/high-performance applications. Its primary characteristics include a dielectric thickness of 5.5 microns, a capacitance of 105 picofarads (pF), an ESR rating of 0.3 ohms and a temperature range of -55°C to +125°C.

Tantalum capacitors are well-known for their high volumetric efficiency. A tantalum capacitor is a type of electrolytic capacitor, with a tantalum metal plate and an insoluble solid electrolyte. It has a higher capacitance per volume compared to other solid capacitors, ranging from 1 to 300,000 microfarads (mF). This makes them suitable for small space applications such as medical devices, hearing aids, and car electronics, where high energy density is desired.

The T491C105K050AS-F is based on a thin film thin film capacitor construction, whereby a dielectric layer is deposited onto a substrate and a tantalum metal film is vapor-deposited onto the dielectric layer, while a conductive layer is vapor-deposited onto the circumference of the capacitor on top of the tantalum film. This type of capacitor offers higher volumetric efficiency, low ESR, and high reliability.

Tantalum capacitors also possess excellent self-healing properties. In normal operation, a longer-lived higher energy capacitor can be designed than other electrolytic types of capacitor, because of the protective oxide layer that forms on the body of the capacitor. In the case of an overvoltage situation, the dielectric might be stressed and a short circuit could occur. However, this short-circuit condition is self-healing and the internal short-circuit cleared, provided that the fault is not too severe or prolonged.

In order to ensure a long life, the T491C105K050AS-F should be stored, handled and used in an environment where temperature, humidity, air pressure and cleanliness are maintained. It should also be used with care in order to avoid any physical shock or vibration. It has a typical impedance of 94mOhms at 100kHz,0.1V and is AEC-Q200 Grade. These characteristics make the T491C105K050AS-F ideal for use in voltage regulator circuits, wave filters, level shifters, frequency dividers and active RC filters.

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