T521W476M020ATE040

Operating Temperature:	-55°C ~ 105°C
Features:	General Purpose
Ratings:	--
Manufacturer Size Code:	W
Lead Spacing:	--
Height - Seated (Max):	0.059" (1.50mm)
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:	KO-CAP® T521
ESR (Equivalent Series Resistance):	40 mOhm @ 100kHz
Type:	Molded
Voltage - Rated:	20V
Tolerance:	±20%
Capacitance:	47µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum - Polymer CapacitorsTantalum and polymer capacitors are becoming increasingly popular in the electronics industry, especially in portable and medical applications. This is mainly due to their small size, long lifespan, high temperature tolerance, and long shelf life. The T521W476M020ATE040 capacitor is one such tantalum/polymer capacitor that has seen increased use in recent times. In this article, we will discuss the application fields of this capacitor and its working principle. Application FieldsThe T521W476M020ATE040 capacitor can be used in a wide range of applications. It is most often used in low-voltage DC power supplies and switching power supplies, such as in communication transmitters and receivers. Its long shelf life and high temperature tolerance make it ideal for use in aerospace, automotive, and medical industries, where reliable and long-term performance is required. Other applications where the T521W476M020ATE040 capacitor excels include high frequency circuits, audio circuits, and RFID circuits. Its high frequency performance makes it an ideal choice for use in oscillators, mixers, and amplifiers. It is also widely used in power filter circuits, as well as low-pass, high-pass, and band-pass filter circuits. Working PrincipleThe T521W476M020ATE040 capacitor is a tantalum/polymer capacitor, which is composed of two electrodes, one of which is made of a tantalum oxide material, and the other is a polymer. These two electrodes are separated by an electrolyte. When a voltage is applied to the electrolyte, cations are formed that are attracted to the tantalum oxide electrode, forming an electric double layer. This electric double layer acts as a capacitor, storing charge, and allowing current to flow across the device.The T521W476M020ATE040 capacitor is a polarized capacitor, meaning that it must be placed in the circuit in the correct orientation for it to operate properly. The electrodes are also temperature-sensitive, meaning that the capacitance of the device will vary as the temperature changes. This characteristic makes the device ideal for temperature compensation applications. ConclusionThe T521W476M020ATE040 capacitor is a tantalum/polymer capacitor that is increasingly gaining popularity in the electronics industry, particularly in portable and medical applications. It is highly reliable and has a long shelf life, making it an ideal choice for use in a wide range of applications, including power supplies, communication transmitters/receivers, and high frequency circuits. Its working principle involves the creation of an electric double layer due to the presence of an electrolyte and the attraction of cations to the tantalum oxide electrode. It is a polarized capacitor and its temperature-sensitive characteristics make it an ideal choice for use in temperature compensation applications.

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