T491A154K035AT4280

T491A154K035AT4280 is a type of tantalum capacitor that belongs to the Automotive Grade family of components. Tantalum capacitors are designed to capacitively store a charge and then release that charge when required. This family of components is specifically designed for use in automotive applications such as power supply, ignition, and other high voltage applications.T491A154K035AT4280 is a type of polymeric or surface mount tantalum capacitor. This type of capacitor is constructed onto the surface of a circuit board or other substrate material. There are two general kinds of polymeric tantalum capacitors – one that utilizes Ta2O5 as the dielectric material and a second type that utilizes Tantalum Oxide (Ta2O5/Ta). The dielectric material used in Ta2O5/Ta capacitor is highly resistant to temperature extremes and its high dielectric constant allows the device to store more electrical charge than other types of capacitors. This makes the Ta2O5/Ta capacitor suitable for use in power supply and ignition applications where high temperatures are expected.T491A154K035AT4280 features an extended life rating of 10,000 to 20,000 hours at 85°C/85%RH relative humidity and a ripple current endurance of 1500mArms. This device is also designed to provide a low ESR rating, ensuring better energy efficiency. The capacitor also features an operating temperature range of -40°C to +85°C, ideal for many automotive applications.The working principle of T491A154K035AT4280 is simple. Current flows into the capacitor through a pair of electrodes, creating an electric field across the dielectric material. This field affects the permittivity and capacitance of the medium, wherein the capacitance is determined by the thickness of the dielectric and its permittivity. The electric field is then balanced out by the electric charges stored in the capacitor, and electric current is blocked by these stored charges, creating a time-delay.Due to its high temperature resistance and its ability to store large amounts of electrical charge, T491A154K035AT4280 is an ideal component for automotive applications. This type of capacitor is used in applications such as power supply, ignition, and other high voltage applications that require a high level of temperature endurance and energy efficiency.