ULD1E470MDD1TD Capacitors

Packaging:	Tape & Box (TB)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Capacitance:	47µF
Tolerance:	±20%
Voltage - Rated:	25V
ESR (Equivalent Series Resistance):	--
Lifetime @ Temp.:	10000 Hrs @ 105°C
Operating Temperature:	-25°C ~ 105°C
Polarization:	Polar
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	91mA @ 120Hz
Ripple Current @ High Frequency:	130mA @ 100kHz
Lead Spacing:	0.098" (2.50mm)
Size / Dimension:	0.197" Dia (5.00mm)
Height - Seated (Max):	0.492" (12.50mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Can
Series:	ULD

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are one of the most widely used types of capacitors. They are used in a variety of applications, and their design and construction characteristics make them ideal for many uses. The specific type of aluminum electrolytic capacitor used in this article is the ULD1E470MDD1TD. This article will discuss the application field and working principle of this type of capacitor. Aluminum electrolytic capacitors are used in many applications, particularly in consumer electronics, due to their strong capacitance, low cost, low leakage current, and small size. Typical applications of aluminum electrolytic capacitors are power supplies, television displays, and audio systems. Besides, there are other areas that utilize aluminum electrolytic capacitors, for example, electric power system, motor drives, industrial temperature controls and general electronics device. The operating temperature range of aluminum electrolytic capacitors can reach from -40°C to +105°C. The ULD1E470MDD1TD has a capacitance rated at 470µF, with a rated voltage of 30V, and a temperature range of -40°C to +105°C. It has a low ESR (Equivalent Series Resistance) rating of 0.019Ω and a low equivalent series inductance of 0.0017 μH. This type of capacitor is typically used in switching power supplies in consumer electronics, and is suitable for applications where there is large ripple current and frequent over-voltage conditions. The working principle of aluminum electrolytic capacitors is based on electrochemical science. A typical aluminum electrolytic capacitor is constructed from two thin aluminum foils separated by a paper or plastic dielectric material. An insulating film of oxide is formed on the foil’s surface by anodic oxidation. Electrolyte is added to produce a chemical reaction that further increases the oxide layer’s thickness. These two foils act as the capacitor’s positively and negatively charged plates, and the oxide film allows the capacitor to store electrical charge. The capacitance of the aluminum electrolytic capacitor is determined by the size of the oxide layer, and is inversely proportional to the distance between the plates. As the oxide layer is thin and flexible, it will almost constantly react to the voltage changes and create a strong positive feedback effect. As a result, aluminum electrolytic capacitors have better performance at high frequencies than other types of capacitors. An aluminum electrolytic capacitor is a very reliable component, due to its highly stable electrochemical structure, and its ability to store charge at high temperatures. The ULD1E470MDD1TD type of capacitor is highly suitable for the applications that require low ESR and low equivalent series inductance, as well as its wide temperature range. As a result, this type of capacitor is a popular choice for many applications, particularly in the consumer electronics industry.

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