T520V157M004ASE025

Series:	KO-CAP® T520
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Capacitance:	150µF
Tolerance:	±20%
Voltage - Rated:	4V
Type:	Molded
ESR (Equivalent Series Resistance):	25 mOhm @ 100kHz
Operating Temperature:	-55°C ~ 105°C
Lifetime @ Temp.:	2000 Hrs @ 105°C
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):	0.075" (1.90mm)
Lead Spacing:	--
Manufacturer Size Code:	V
Ratings:	--
Features:	General Purpose

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Introduction to Tantalum - Polymer Capacitors

Tantalum - polymer capacitors are electronic components that are widely used in many different applications. They are composed of a combination of tantalum, an alloy containing metal, and a polymer as the dielectric. This type of capacitor is highly versatile, offering both high capacitance, high volumetric efficiency, and low leakage. The combination of these characteristics make tantalum - polymer capacitors ideal for applications such as de-coupling, filtering, and energy storage.

T520V157M004ASE025

The T520V157M004ASE025 is a tantalum - polymer capacitor manufactured by KEMET. This capacitor is available in three different temperature ranges, namely 105°C, 175°C and 250°C. The T520V157M004ASE025 has a capacitance value of 0.15µF, a voltage rating of 16V, and a maximum operating temperature range of -55°C to +105°C. The T520V157M004ASE025 is a surface mount device with an overall dimension of 2.0 x 2.5mm, making it suitable for applications with limited board space.

Application Fields of T520V157M004ASE025

The T520V157M004ASE025 is suitable for a wide range of applications, because of its high capacitance, high volumetric efficiency, and low leakage characteristics. One of the main applications for this capacitor is for de-coupling, which helps to reduce suddern voltage transients and ripple noise from the circuit, thus improving the overall stability and reliability of a system. The T520V157M004ASE025 can also be used as a filter element in order to reduce any high-frequency noise and harmonics in a circuit. This capacitor can also be used for energy storage applications, such as in power supplies or for buffering.

Working Principle for T520V157M004ASE025

The T520V157M004ASE025 works on the principle of electrostatics. This means that when a voltage is applied to the terminals of the capacitor, a charge is stored in the dielectric material between the two capacitive plates. The amount of charge stored is proportional to the applied voltage and is directly related to the capacitance of the device. This stored charge creates an electric field, which is an attractive force between the positively and negatively charged sides of the capacitor. This attractive force results in a displacement current, which flows through the device when an external voltage is applied. The charge stored in the dielectric will remain until the external voltage is removed or the applied voltage falls below the rated voltage of the device.

Advantages and Disadvantages of T520V157M004ASE025

Tantalum - polymer capacitors have many advantages. As compared to conventional electro-ceramic capacitors, polymer capacitors are much more robust, providing better temperature stability, longer shelf life, and a lower dielectric absorption. Furthermore, polymer capacitors have a much higher capacitance, allowing them to be used in applications which require bigger capacitances than electro-ceramics are capable of.However, polymer capacitors also have some disadvantages. The main one being that they tend to have a higher equivalent series resistance (ESR) than electro-ceramic capacitors, which can lead to a decrease in the efficiency of the circuit. Furthermore, polymer capacitors have a limited voltage rating and tend to have shorter operational lifetimes than many other types of capacitors.

Conclusion

In conclusion, the T520V157M004ASE025 is a versatile and reliable tantalum - polymer capacitor with a range of applications such as de-coupling, energy storage, and filtering. Its high capacitance, high volumetric efficiency, and low leakage characteristics make it very suitable for use in many different applications. Despite having some disadvantages such as a higher ESR and shorter operational lifetimes, polymer capacitors are still a reliable and cost-effective type of capacitor.

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