T491D336M020ZT Capacitors

Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Capacitance:	33µF
Tolerance:	±20%
Voltage - Rated:	20V
Type:	Molded
ESR (Equivalent Series Resistance):	800 mOhm
Operating Temperature:	-55°C ~ 125°C
Lifetime @ Temp.:	--
Mounting Type:	Surface Mount
Package / Case:	2917 (7343 Metric)
Size / Dimension:	0.287" L x 0.169" W (7.30mm x 4.30mm)
Height - Seated (Max):	0.122" (3.10mm)
Lead Spacing:	--
Manufacturer Size Code:	D
Features:	General Purpose
Failure Rate:	--
Series:	T491

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Tantalum capacitors are valued for a number of reasons. In comparison with other types of capacitors, they have greater energy density, capability of providing high ripple current, and low ESR values.The T491D336M020ZT model belongs to the T491 line of encapsulated tantalum capacitors which are features with a wide range of capacitance values encompassing the 2.2 to 1800 microfarad range. Each component provides an increased capacitance and low ESR for which they are renowned.Such capacitors are designed with a manganese dioxide anode, which provides a long lifetime as well as a maximum leakage current. Similarly, their oxide-coated cathode ensures that the component provides reliable performance. The T491D336M020ZT also boasts a 60 -100 degree Celsius temperature range.

Application Field and Working Principle

The T491D336M020ZT is primarily used in pulsed power systems, where the need for rapid delivery of energy is paramount. Within pulse systems, the capacitor is employed in filter circuits, where it maintains a steady current and voltage to the device. Similarly, the component is also used in power supplies where it is called on to provide an energy reserve during peak loads.The working principle of the T491D336M020ZT is based on the laws of electricity. When voltage is applied to the cathode, a current begins to flow, charging the capacitor\'s plates. This current produces an electric field between the two plates, with their electrostatic energy being stored within the capacitor. This energy is then released through the anode as the voltage decreases, providing the desired effects.Aside from pulse power applications, the T491D336M020ZT is also suitable for DC-DC converters, low-noise amplifiers, and other applications where stability is critical. They also have applications in medical equipment and automotive systems, proving their versatility.

Construction

The T491D336M020ZT component is encased in a plastic shell lined with a glass-ceramic material. This shell provides the capacitor with robust protection from shock and vibration, which may otherwise interfere with performance. Notably, the vitreous insulation ensures that the component functions in both wet and dry environments.Inside the housing, the component contains two dielectric layers. The first is the tantalum substrate itself, while the second is the manganese dioxide film, which serves as the anode. These two layers are separated by a hermetically sealed dielectric air gap. Finally, the output terminals are connected to the anode and cathode layers via a metallized layer of titanium.

Advantages

The T491D336M020ZT provides a number of advantages in comparison to other types of capacitors. To begin with, these components boast a high energy density for a given size and greatly reduced ESR levels. As such, they are able to store more energy at a given temperature than many of their counterparts. Moreover, their manganese dioxide anode allows for higher peak currents and less leakage than other types of capacitor.In addition, the T491D336M020ZT also has a wide temperature range and a low self-resonance frequency. This ensures that the component can be used in a variety of applications, including high-temperature systems. Similarly, its hermetically sealed housing prevents external factors such as humidity from interfering with performance.Finally, the T491D336M020ZT also has several other features which make it ideal for use in many different system designs. Its lead spacing is narrow, allowing for closer mounting in complex applications. Moreover, it has a high tolerance for capacitance deviation, ensuring a greater level of reliability over long periods of time.

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