T491B475K020ZTZ001 Allicdata Electronics
Allicdata Part #:

T491B475K020ZTZ001-ND

Manufacturer Part#:

T491B475K020ZTZ001

Price: $ 0.06
Product Category:

Capacitors

Manufacturer: KEMET
Short Description: CAP TANT 4.70UF 20.0V
More Detail: 4.7µF Molded Tantalum Capacitors 20V 1411 (3528 Me...
DataSheet: T491B475K020ZTZ001 datasheetT491B475K020ZTZ001 Datasheet/PDF
Quantity: 1000
2000 +: $ 0.05421
Stock 1000Can Ship Immediately
$ 0.06
Specifications
Lifetime @ Temp.: 2000 Hrs @ 125°C
Failure Rate: --
Features: General Purpose
Ratings: --
Manufacturer Size Code: B
Lead Spacing: --
Height - Seated (Max): 0.083" (2.10mm)
Size / Dimension: 0.138" L x 0.110" W (3.50mm x 2.80mm)
Package / Case: 1411 (3528 Metric)
Mounting Type: Surface Mount
Series: T491
Operating Temperature: -55°C ~ 125°C
ESR (Equivalent Series Resistance): 3 Ohm
Type: Molded
Voltage - Rated: 20V
Tolerance: ±10%
Capacitance: 4.7µF
Part Status: Active
Packaging: Tape & Reel (TR) 
Description

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Tantalum Capacitors: T491B475K020ZTZ001 application field and working principle

Tantalum capacitors offer many advantages when used as power supply decoupling, in bypassing, and in filtering applications. The physical form factor of tantalum capacitors is quite small in comparison to other capacitors making them ideal for such applications. The ca of the T491B475K020ZTZ001 makes them suitable for enhancing the current-carrying capability of circuits, allowing higher load currents without the problems associated with connecting multiple, traditionally-sized capacitors. The T491B475K020ZTZ001 capacitor has two metallic plates that are separated by a dielectric layer.

Application Field of T491B475K020ZTZ001

The extremely low ESR of tantalum capacitors make them perfect for decoupling and by-passing applications: they can reduce the effects and noise of switching transistors and are useful to reduce the power factor in a power supply system. This structure also ensures the capacitor’s very low equivalent series resistance (ESR) that helps reduce power loss in applications where ESR is a factor. The small size and long life of the T491B475K020ZTZ001 also makes them suitable for use in mobile devices, such as mobile phones and laptops. The T491B475K020ZTZ001\'s small size makes it well suited for use in military and aerospace applications, as well as medical and automotive systems.

Working Principle of T491B475K020ZTZ001

Tantalum capacitors work by converting energy stored in an electrostatic field. A tantalum capacitor is constructed of two tantalum metal plates, each coated with a thin oxide layer. An electrolyte, usually in the form of a paste, completes the capacitor’s construction. The two tantalum plates act as the electrodes of the capacitor and the paste acts as the dielectric material. When a voltage is applied to the capacitors electrodes, a particular amount of energy is stored in the electrostatic field. This energy can later be released when the voltage is removed.

The tantalum capacitors have a very low equivalent series resistance (ESR) which implies that the current-carrying capacity of the capacitor can be increased without any issues. This feature helps reduce power loss in applications where ESR is an issue. As a result, the T491B475K020ZTZ001 is an excellent choice for applications which require higher load currents. Additionally, the low ESR also helps to reduce the effects of noise created by electrical switches.

The oxide layer on the tantalum plates is important as it acts as a barrier to the flow of current. It is essential in maintaining a predictable delivery of energy when the capacitor is connected to a power source. It also helps to ensure that the capacitor discharges slowly and reliably.

Lastly, the electrolyte paste between the plates serves as a dielectric that ensures a consistent level of energy is transferred. The paste is also used to stabilize the voltage, making the T491B475K020ZTZ001 highly suitable for applications that require a steady and reliable supply of power.

Conclusion

Tantalum capacitors are extremely useful components in various kinds of devices and systems. The T491B475K020ZTZ001 capacitor is an excellent choice due to its small size and long service life. It can be used in various applications, particularly those which require higher load currents and a low ESR. Additionally, its dielectric layer and electrolyte paste helps to ensure a steady and predictable supply of power. As a result, the T491B475K020ZTZ001 capacitor can be used in applications where a reliable and consistent supply of energy is required.

The specific data is subject to PDF, and the above content is for reference

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