T498D685K035ZTE900 Capacitors

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Tantalum capacitors, also known as tantalum electrolytic capacitors, are one of the most common types of capacitors used in electrical and electronic circuits. They are built from a thin film of tantalum metal, and an oxide layer that acts as the dielectric, or insulating material, between the two pieces of metal. As with all capacitors, the purpose of a tantalum capacitor is to store an electrical charge, which can then be discharged when needed. In this way, they act like batteries, but there are some significant differences.

The T498D685K035ZTE900 tantalum capacitor is a low-voltage surface-mount device with a typical capacitance of 68.5uF. It has a rated voltage of 6.3V, and a maximum voltage of 7.5V. It has a maximum operating temperature of -40°C to 85°C, a high pulse ripple current handling capability, and a low ESR (Equivalent series resistance) of 0.0035Ω. It is designed to be used in DC circuit applications such as DC-DC converters, embedded systems, and general-purpose high-frequency applications.

The operation of a tantalum capacitor is based on the electrochemical principles of ionic storage and transport. It uses a thin film of tantalum metal as the cathode, and an oxide coating, such as manganese dioxide (MnO2), as the anode. When a charge is applied to the capacitor, the oxide coating stores the electrons and metal ions are attracted to the anode. The ions move freely through the oxide coating, transporting the stored charge to the anode and creating an electric field.

When the capacitor is discharged, the stored ions move back to the cathode and the charge is reduced. This cycle is repeated each time the capacitor is charged and discharged, creating an effective charge storage mechanism that is capable of storing energy for hundreds of thousands of cycles. Tantalum capacitors provide stable voltage and current levels and are commonly found in power supplies, DC-DC converters, and a variety of other circuits. Due to their excellent electrical characteristics and low cost, tantalum capacitors have become a popular choice for a wide range of applications.

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