T520B157M003ATE070

Operating Temperature:	-55°C ~ 105°C
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
Lifetime @ Temp.:	2000 Hrs @ 105°C
Series:	KO-CAP® T520
ESR (Equivalent Series Resistance):	70 mOhm @ 100kHz
Type:	Molded
Voltage - Rated:	3V
Tolerance:	±20%
Capacitance:	150µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum - Polymer Capacitors

Tantalum-polymer capacitors, also known as polymer tantalum capacitors, are surface-mount capacitors that feature an anode made of tantalum, an oxide-based solid electrolyte, and MnO2 cathode. Compared to traditional aluminum electrolytic capacitors, polymer tantalum capacitors offer excellent volumetric efficiency and high-temperature reliability. The particular T520B157M003ATE070 device is a very popular part in the polymer tantalum capacitor family.

Application Field

Tantalum-polymer capacitors are highly-versatile components that are typically used in lightweight, low-profile applications that should maintain a high-temperature reliability. They have become the component of choice in many high-density mobile applications such as tablet computers, smartphones, and wearables. They are particularly suited to power delivery applications because their small size and light weight allow them to be integrated easily into smaller, lighter, and thinner circuits. The T520B157M003ATE070 component in particular, is an ideal component for any highly-dense application. It features a maximum capacitance of 20µF, and features a low ESR of 0.51Ω and a maximum ripple current of 2.2A The device also offers excellent volumetric efficiency, making it an ideal component for many applications.

Working Principle

The working principle of a Tantalum-Polymer capacitor is similar to that of any traditional capacitor. The device consists of two electrodes separated by an electrolyte. When there is a voltage difference across the terminals, an electric field develops within the device, which causes an electric current to flow. This current causes an electrostatic field within the device, which results in a charge buildup on the plates. The charge buildup is proportional to the voltage difference between the terminals, and the resulting capacitance of the device is determined by the construction of the device. The T520B157M003ATE070 capacitor consists of an anode made of tantalum, an oxide-based solid electrolyte. The cathode is composed of MnO2 and electrodes are separated by the oxide-based solid electrolyte. Thus, when a voltage is applied across the terminals of the device, an electric field develops within the capacitor, resulting in a charge buildup on the capacitor plates. As the electric field increases, the capacitance of the device increases. This increase in capacitance is limited by the construction of the device and its maximum capacitance is 20µF. In addition to utilizing its charge storage capability, the device also has a low ESR and ripple current rating, allowing it to operate efficiently in high-frequency applications. Combined, these features make the T520B157M003ATE070 capacitor an ideal component for many power delivery applications.

Conclusion

Tantalum-polymer capacitors offer numerous advantages over traditional aluminum electrolytic capacitors, including improved volumetric efficiency, high-temperature reliability, and a low ESR rating. The particular T520B157M003ATE070 device is a highly-versatile component that is well-suited for high-density mobile applications such as tablet computers, smartphones, and wearables. Furthermore, with its low ESR rating and maximum ripple current of 2.2A, it is also an excellent choice for many power delivery applications. Overall, Tantalum-polymer capacitors offer many advantages compared to traditional capacitors. With its excellent volumetric efficiency and high-temperature reliability, the T520B157M003ATE070 device has become a staple component in many high-density mobile applications.

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