420QXW27MEFR8X45

Polarization:	Polar
Package / Case:	Radial, Can
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.850" (47.00mm)
Size / Dimension:	0.315" Dia (8.00mm)
Lead Spacing:	0.138" (3.50mm)
Ripple Current @ High Frequency:	390mA @ 10kHz
Ripple Current @ Low Frequency:	260mA @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	QXW
Operating Temperature:	-40°C ~ 105°C
Lifetime @ Temp.:	2000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	420V
Tolerance:	±20%
Capacitance:	27µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors (AECs) are common electronic components typically found in a variety of circuit applications. They are used in almost all electronic equipment due to their large capacitance, low loss, and low cost. The most common type of aluminum electrolytic capacitor is the one with a spirally wound anode, an electrolyte consisting of a concentrated solution of boric acid, and an electrolyte-soaked paper capacitor separator.The 420QXW27MEFR8X45 aluminum electrolytic capacitor is a popular product within the family of AECs. It is a very small, inexpensive capacitor that is typically used in various applications such as power supplies, motor control, audio frequency circuits, and others where high voltage and high frequency are required. The 420QXW27MEFR8X45 capacitor is also well known for its high capacitance and low effective series resistance.The main advantage of the 420QXW27MEFR8X45 aluminum electrolytic capacitor is its ability to store large amounts of energy in a small size and for a relatively low cost. Compared to other types of capacitors, AECs have higher capacitance per volume and lower leakage. AECs also have much longer life expectancy than traditional capacitors due to their superior temperature cycling and thermal shock characteristics. In addition, AECs are very tolerant of electrical transients and over-voltages, making them ideal for use in high-voltage applications.The bad news is that AECs are difficult to design with, and they are highly temperature sensitive. They also require the user to be extra careful when soldering because the electrolyte can leak. Lastly, the rated voltage of AECs should not be used as their actual working voltage because this could result in capacitance loss resulting in malfunctioning or even destruction of the circuit.The working principle of an aluminum electrolytic capacitor is straightforward. It consists of an anode made of metal foil, and a cathode made of metal oxide. The anode is immersed in an electrolyte solution, and the cathode is connected to the negative terminal of the voltage source. When voltage is applied to the anode, current flows in the circuit, creating a voltage difference between the two electrodes. The electrolyte then ionizes, creating an electric field between the two electrodes, resulting in a capacitance.In summary, the 420QXW27MEFR8X45 aluminum electrolytic capacitor is an ideal choice for high-temperature, high-voltage, and/or high-frequency applications due to its large capacitance, low cost, and ease of use. It is able to store large amounts of energy in a small form factor, making it suitable for most electronics projects. Unfortunately, AECs are difficult to design with and are highly temperature sensitive, so the user must be extra careful when working with them. Also, the rated voltage of AECs should not be used as their actual working voltage in order to avoid permanent damage. However, properly applied AECs can provide reliable and powerful performance.

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