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Types of Aluminum Electrolytic Capacitors
Axial Leaded Capacitors
An axial lead capacitor has leads that run parallel with the body of the capacitor and come out at two opposite ends. Axial leaded capacitors are ideal for low profile circuit board applications. Generally, axial electrolytic capacitors are polarized, with one lead being positive and the other being negative. Axial electrolytic capacitors can also be non-polarized, but they are not as popular as the polarized versions.
Radial Leaded Capacitors
A capacitor with radial leads has two leads coming out of one side of the capacitor. Radial electrolytic capacitors it is connected across the electrolyte with a non-defined resistance to the cathode (ground). Radial electrolytic capacitors use a rubber plug with a very dense structure.
Screw Terminal Capacitors
Screw terminal capacitors have excellent ripple current capability. These are heavy duty, long life capacitors. Applications include general industrial electronics and for switch-mode power supplies in professional equipment.
SMD Capacitors
Applications for SMD capacitors include general-purpose applications in the entertainment industry. They also have miniaturized dimensions and are RoHS compatible.
Snap In Capacitors
The snap-in aluminum electrolytic capacitors feature two pin or three pin snap- in terminals making them perfect for easy mounting on the PCB of the application. Advanced series feature extremely compact dimensions, outstanding ripple current capabilities and an extra long useful life. Typical applications are frequency converters, solar inverters, professional power supplies, UPS and automotive.
About Aluminum Electrolytic Capacitors
An Aluminum Electrolytic Capacitor is a type of capacitor that contains just a few essential parts: aluminum foil, electrolytic paper, an aluminum oxide layer, and two terminals (a cathode and an anode). Aluminum Electrolytic Capacitors work by using the polarity between the two terminals to maintain high capacitance within the component. Uses for Aluminum Electrolytic Capacitors include energy storage and AC resistance.
Aluminum electrolytic capacitors are the most inexpensive type of capacitor with the widest range of sizes, capacitance and voltage range as compared to other capacitor dielectric. Due to their relatively high capacitance values, aluminum electrolytics have low impedance values, higher energy density than ceramic or film capacitors, higher power density than supercapacitors and no peak current limitations. Typical applications include input and output decoupling for smoothing and filtering in AC power supplies, switched-mode power supplies and DC/DC converters. They are also used in energy storage, power factor correction and in uninterruptible power supply (UPS) systems.
The aluminum electrolytic capacitor consists of a wound element, impregnated with liquid electrolyte, connected to terminals, sealed in a can and then aged to reduce or eliminate early life failures. They have an extremely broad capacitance range and varies based on the form factor, temperature and voltage requirement. The varieties and styles include molded and can-style SMT devices, also known as V-chips; axial and radial leaded cans, snap-in terminal cans and large can screw terminals. Capacitance values range from 0.1 μF to to 3 F with voltage ratings from 5 Vdc to 700 Vdc. They are polar by nature and have distinct positive and negative terminals aiding in efficient and correct board placement.
TTI is the premier supplier of aluminum electrolytic capacitors and is the leading authorized distributor for several best in class, world-wide manufacturers. TTI works closely with these manufacturers to provide a very broad and deep product offering. TTI is committed to providing not only the latest and greatest products from our suppliers, but also the legacy products our customers expect. TTI’s highly trained capacitor specialists can assist you in choosing the best aluminum electrolytic capacitor for your new or current design requirement, as well as delivering to your production needs.
At TTI, we carry a wide selection of Aluminum Electrolytic Capacitor products in stock, including Bi-Polar / Non-Polar Electrolytic Capacitors, Computer Grade Electrolytic Capacitors, General Purpose Electrolytic Capacitors, Low ESR Electrolytic Capacitors, Low Impedance Electrolytic Capacitors, Low Leakage Electrolytic Capacitors and more. You can browse TTI to search by Capacitance, Termination Style, Voltage Rating DC, Voltage Rating AC, and more to find the right Aluminum Electrolytic Capacitor for your electronic design. We stock high-quality Aluminum Electrolytic Capacitors from trusted manufacturers like Cornell Dubilier, EPCOS / TDK, KEMET, Nichicon, United Chemo-Con (UCC), Vishay and more.
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