870025174009 Datasheet/PDFAluminum - Polymer Capacitors
The 870025174009 capacitor is a high-performance, aluminum-polymer-type capacitor. This type of capacitor is commonly used in many industrial and consumer applications, including automotive electronics and power electronics.
Capacitor Construction
An aluminum-polymer capacitor consists of a solid electrolytic capacitor and a thin-film, aluminum-polymer layer that serves as the dielectric. The aluminum-polymer layer provides much higher capacitance and voltage handling capabilities than traditional electrolytic capacitors.
The aluminum-polymer layer covers the outside of the capacitor, and is attached to the internal capacitor electrodes with a conductive epoxy. The epoxy bonds the film to the electrodes and seals the capacitor from the environment, protecting it from moisture, dirt, and other contaminants.
Applications
Aluminum-polymer capacitors have become popular in many industrial and consumer applications, due to their high performance and ability to withstand harsh environments. These applications include:
- Automotive Electronics - This type of capacitor is great for today’s vehicles, because they are capable of withstanding the harsh conditions that automotive environments can present.
- Power Electronics - The high power-handling capability of aluminum-polymer capacitors makes them ideal for power electronics applications, such as in DC-DC converters, UPS systems, and motor drives.
- Computer & Networking - These capacitors can also be used in computer and networking applications, where the high capacitance and voltage-handling capabilities make them ideal.
Working Principle
The working principle behind an aluminum-polymer capacitor is the same as other electrolytic capacitors; it is an electrical double-layer capacitor that stores energy in a thin film layer separated by an electrolyte. The aluminum-polymer film acts as the dielectric material and the electrolyte allows current to flow between the electrodes on either side of the dielectric layer.
When a voltage is applied to the capacitor, the electric field created by the voltage causes electrons to move through the electrolyte and form a double-layer of charge on the opposite side of the dielectric material. This double-layer of charge stores the energy, and is what allows the capacitor to store energy when it is not being used.
Conclusion
The 870025174009 aluminum-polymer capacitor is a high-performance type of capacitor that is well suited to many industrial and consumer applications. Its high capacitance and voltage-handling capabilities make it ideal for automotive electronics, power electronics, computer and networking applications.
The working principle of this capacitor is the same as other electrolytic capacitors, in that it stores energy in a thin film layer separated by an electrolyte.