4SW270M2.9X7.3 Allicdata Electronics
Allicdata Part #:

4SW270M2.9X7.3-ND

Manufacturer Part#:

4SW270M2.9X7.3

Price: $ 0.50
Product Category:

Capacitors

Manufacturer: Rubycon
Short Description: CAP ALUM POLY 270UF 20% 4V SMD
More Detail: 270µF 4V Aluminum Polymer Capacitor 2917 (7343 Met...
DataSheet: 4SW270M2.9X7.3 datasheet4SW270M2.9X7.3 Datasheet/PDF
Quantity: 1000
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
2000 +: $ 0.45289
Stock 1000Can Ship Immediately
$ 0.5
Specifications
Series: PC-CON, SW
Packaging: Tape & Reel (TR) 
Lead Free Status / RoHS Status: --
Part Status: Active
Type: Polymer
Capacitance: 270µF
Tolerance: ±20%
Voltage - Rated: 4V
ESR (Equivalent Series Resistance): 9 mOhm
Lifetime @ Temp.: 2000 Hrs @ 105°C
Operating Temperature: -55°C ~ 105°C
Ratings: --
Applications: General Purpose
Lead Spacing: --
Size / Dimension: 0.287" L x 0.169" W (7.30mm x 4.30mm)
Height - Seated (Max): 0.114" (2.90mm)
Surface Mount Land Size: --
Mounting Type: Surface Mount
Package / Case: 2917 (7343 Metric)
Description

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Aluminum - Polymer Capacitors: 4SW270M2.9X7.3 Application Field and Working Principle

Aluminum - polymer capacitors, or simply "polymer capacitors", are a type of electrolytic capacitor that supercedes the traditional aluminum electrolytic capacitors used in electronics. These capacitors are constructed with a thin sheet of aluminum foil impregnated with a thin layer of a polymer dielectric material. The advantages of using aluminum - polymer capacitors over traditional aluminum electrolytic capacitors include increased performance, such as higher capacitance, greater ripple current capabilities, and lower equivalent series resistance (ESR) values. Furthermore, the use of the thin film of a polymer dielectric increases the capacitor’s stability over a larger temperature range and its lifetime expectancy. The 4SW270M2.9X7.3 is a aluminum - polymer capacitor with a total capacitor value of 270 mF, and a rated voltage of 50 volts. The "4SW" stands for the 4-pin winding style and the "M2.9X7.3" stands for the dimensions of the capacitor in millimeters, measuring 2.9 mm in diameter and 7.3 mm in height. These capacitors are specifically designed for use in telecom and data communication applications, and are used most commonly in applications involving high frequency switching, such as in microcontrollers and mobile phone motherboards.The basic working principle of an aluminum - polymer capacitor is based on an electrical field generated between two inversely charged surfaces, such as a metal plate and an insulating material such as a polymer film. As shown in Figure 1 a, when a voltage is applied across the capacitor, a static electric field is generated between the two conductive plates. Electrons accumulate on the negative plate and become attracted to the positively charged plate due to this electric field, thus creating a charge imbalance within the capacitor (Figure 1 b). As electrons move from the negative plate to the positive plate and back again, a current flows through the capacitor, and the resultant output current is proportional to the applied voltage. The 4SW270M2.9X7.3 capacitor utilizes this basic principle to provide the user with improved performance and reliability over traditional aluminum electrolytic capacitors without increasing device size. Due to the use of a thin polymer dielectric material and a larger-than-average total capacitance value, this device can provide increased performance over traditional electric double-layer capacitors and higher stability and reliability with respect to temperature variations. Polymer capacitors also benefit from a decrease in Equivalent Series Resistance (ESR) values compared to traditional aluminum electrolytic capacitors. ESR is a measure of the resistance to an AC signal within a capacitor, and lower ESR values generally result in improved performance for AC signals, both in terms of signal integrity and power efficiency. Additionally, the use of a thinner dielectric material also improves the device’s ability to displace heat away from the capacitor plates and into the surrounding environment, making these devices ideal for use in high-temperature broadband applications.The 4SW270M2.9X7.3 is a reliable and high-performance device specifically designed for high-temperature applications where power supply connections and power supply noise need to be kept low. Additionally, the use of a polymer dielectric material and a large total capacitance value ensures greater stability and lifetime expectancy over traditional aluminum electrolytic capacitors.

The specific data is subject to PDF, and the above content is for reference

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