T491A155M016ZT7111

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Tantalum capacitors are one of the most common components used in electronic circuits and can be found in all sorts of consumer electronics, computers, and other devices. The T491A155M016ZT7111 is a polarized surface-mount tantalum capacitor, typically used as a power supply filter capacitor in digital and analog circuits.

The T491A155M016ZT7111 is a bipolar tantalum capacitor with straight leads and a surface mount package. It has an output resistance of 1 mΩ and an ESR of 1.4 mΩ. The T491A155M016ZT7111 is rated for 15V and has a capacitance of 15μF. It is rated for operation from -55°C to +125°C.

The T491A155M016ZT7111 is commonly used in DC-DC power supplies, LCD drivers, and 1-cell Li-ion battery packs. It can also be used for protecting outputs from high frequency interference or for decoupling between input and output stages of amplifiers.

A tantalum capacitor works similarly to any other type of capacitor, by storing electrical charge on two metal plates and passing this charge to the load when the voltage difference between the plates reaches a certain level. The unique feature of tantalum capacitors is that they use electrolytic paste instead of an insulator between the two metal plates. This electrolytic paste provides a better surface area for the plates to collect electrons and therefore provides higher capacitance.

The T491A155M016ZT7111 employs Polarized Liquid Electrolytic Capacitors (PLECs). This type of capacitor has two dry metal plates – an anode and a cathode – immersed in a wet electrolytic solution. This solution usually consists of dissolved tantalum salts that adheres to the plate surfaces and provide the high capacitance values required for bypassing. The electrolytic solution also helps to reduce inductive losses and ESR.

The T491A155M016ZT7111 also features High Temperature Leaded Polymer Capacitors (HTLP). This type of capacitor has two dry electrolytic plates with a layer of polymer electrolyte. The polymer electrolyte provides good stability at higher temperature, making the capacitor suitable for high temperature applications. The HTLP capsule has low ESR and low leakage current, making it ideal for power supply filtering and decoupling in mobile and consumer applications.

The T491A155M016ZT7111 is a great alternative to aluminum electrolytic capacitors, as it offers higher capacitance, higher frequency response, and improved temperature stability. This makes it ideal for power supply and decoupling applications in portable, consumer, and medical electronics.

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