875075155010 Capacitors

Applications:	General Purpose
Ripple Current @ Low Frequency:	260mA @ 120Hz
Ripple Current @ High Frequency:	5.2A @ 100kHz
Lead Spacing:	--
Size / Dimension:	0.315" Dia (8.00mm)
Height - Seated (Max):	0.461" (11.70mm)
Surface Mount Land Size:	0.327" L x 0.327" W (8.30mm x 8.30mm)
Mounting Type:	Surface Mount
Package / Case:	Radial, Can - SMD
Series:	WCAP-PSLC
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Polymer
Capacitance:	1000µF
Tolerance:	±20%
Voltage - Rated:	6.3V
ESR (Equivalent Series Resistance):	8 mOhm
Lifetime @ Temp.:	2000 Hrs @ 105°C
Operating Temperature:	-55°C ~ 105°C
Ratings:	--

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Introduction: Aluminum - Polymer Capacitors

Aluminum - polymer capacitors, or simply "Al-polymer capacitors" is a type of electrochemical energy storage device composed of an anode and a solid polymer dielectric. Unlike conventional aluminum electrolytic capacitors, which are composed of two metalized electrodes, the electrochemical device of an Al-polymer capacitor is constructed of a specially configured structure, including a highly conductive aluminum substrate, a chemically treated film, and a semi-conductive ceramic layer. As a result of their unique construction, Al-polymer capacitors offer superior electrical characteristics, low ESR, excellent stability, and superior capacitance range compared to conventional aluminum electrolytic capacitors.

875075155010 Application Field and Working Principle

The application field of the 875075155010 Al-polymer capacitor is mainly focused on dc-dc converters and switching power supplies, enabling superior high-frequency operation, low ESR and excellent stability. Due to its small size, the Al-polymer capacitor can easily be incorporated into mobile electronic devices such as laptop computers, audio and video game consoles, mobile phones and PDAs.Al-polymer capacitors are based on the principle of electrochemical double layer capacitance. When a voltage is applied across the anode and the solid polymer dielectric, a double layer of ionic charges forms along the interface between the two materials. The electric field created by the charges causes a small amount of the solid polymer for ex to leak into the electrolyte. This electrolyte facilitates charge transfer, leading to an electrochemical reaction that generates energy in the form of electrical current.The structure of an Al-polymer capacitor is simple and compact, consisting of a highly conductive aluminum substrate, chemically treated film and a semi-conductive ceramic layer. The aluminum substrate provides a low resistance path for charge transfer and its surface has been etched to provide a high degree of adhesion between the substrate and the film. The film is composed of a single or multiple layers of a specially formulated polymer material with a high dielectric strength that allows for the formation of the electrochemical double layer capacitance. The semi-conductive ceramic layer provides dissipation of any excess charge.The main advantage of Al-polymer capacitors is that their performance characteristics do not depend on temperature, humidity, frequency of operation, or the applied voltage. This makes them ideal for use in applications where these parameters may vary greatly. Furthermore, the relatively low ESR values of Al-polymer capacitors allow them to be used in high-frequency switching applications, where conventional aluminum electrolytic capacitors are not able to tolerate the changing current level without significant voltage drop. This is highlighted in the figure below, where the ESR graph of a conventional capacitor shows the capacitor’s drop in voltage value when subjected to frequent switching conditions.

Conclusion

In conclusion, Al-polymer capacitors are superior to conventional aluminum electrolytic capacitors in areas such as dc-dc converters and switching power supplies, due to their higher capacitance range and low ESR values, high frequency operation and excellent stability. Furthermore, their performance characteristics are not dependent on temperature, humidity, frequency of operation, or applied voltage. This makes them an ideal choice for applications where these parameters may vary widely. The 875075155010 aluminum - polymer capacitor is a perfect example of this technology and can be used in a variety of different applications to provide superior electrical performance.

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