TAJE157K020HNJ Capacitors

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	--
Features:	General Purpose
Manufacturer Size Code:	E
Lead Spacing:	--
Height - Seated (Max):	0.169" (4.30mm)
Size / Dimension:	0.287" L x 0.169" W (7.30mm x 4.30mm)
Package / Case:	2917 (7343 Metric)
Mounting Type:	Surface Mount
Lifetime @ Temp.:	--
Series:	TAJ
ESR (Equivalent Series Resistance):	300 mOhm
Type:	Molded
Voltage - Rated:	20V
Tolerance:	±10%
Capacitance:	150µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

Tantalum capacitors are solid electrolytic capacitors that are widely used in electronics and telecommunications. They are used in a variety of applications due to their excellent electrical characteristics, such as low ESR, long life, and high capacitance density. The capacitors come in various forms and sizes, and are used in power supplies, analog modulation, and signal processing. This article will discuss the application field and working principle of TAJE157K020HNJ tantalum capacitor.

Application Field

Tantalum capacitors are widely used in power circuits, due to their reliable performance and high stability. Their main application is as a bypass used in power supply and decoupling circuits, where the high capacitance is used to improve performance and reduce power noise. In addition, tantalum capacitors are also used as a main capacitor, such as in switching power supplies, and as output filters in small DC-DC converters. They can also be used as non-polar capacitors in AC-DC or DC-AC conversion, where the same capacitance is required in both polarities and no phase shift is needed. Tantalum capacitors are also widely used in communication circuits, such as baseband transmission and RF circuits. They are used to filter noise, improve impedance matching, and reduce harmonic distortion due to their low ESR and high capacitance.

Working Principle

The TAJE157K020HNJ is a tantalum capacitor constructed with a solid sintered anode, manganese dioxide dielectric, and solid sintered cathode. The anode is formed from sintered tantalum, which is a powdered metal that has been pressed and heated to form a solid. The dielectric is utilized to form a barrier between the electrodes and create the electrical insulation layer required for a capacitor. The cathode, which is also a sintered material, is usually made of titanium, aluminum, or a mixture of these.The capacitor is connected to a circuit by attaching leads to the anode and cathode terminals. When an electrical current is applied to the leads, electrons travel through the dielectric, creating a built-up of charge on the two plates. This generates an electrostatic field between the plates, and creates a capacitance. This capacitance allows for the storage of electrical energy, similar to a battery, but for a much shorter duration.

Conclusion

The TAJE157K020HNJ is a solid tantalum capacitor that is used in a variety of applications due to its excellent electrical characteristics. Its main application is in power circuits, where it is used as a bypass to reduce power noise, as a main capacitor in power supplies, or as a non-polar capacitor in conversion circuits. It is also used in communication circuits to filter noise and reduce harmonic distortion. The capacitor is constructed with a solid sintered anode, manganese dioxide dielectric, and solid sintered cathode, and works by building an electrostatic field between the plates, thus creating capacitance and allowing for the storage of energy.

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