470nF 50VDC Low Leakage Electrolytic Capacitor For Sale

470nF 50VDC Low Leakage Electrolytic Capacitor
85ºC rated Leakage characteristics similar to tantalum caps, but at a lower price.An electrolytic capacitor uses and electrolyte (a liquid or gel containing a high concentration of ions) to achieve a larger capacitance than the other capacitor types. These electrolytic capacitors are polarized, meaning that the voltage on the positive terminal must always be greater than the voltage on the negative terminal. They are commonly used as filters in devices in various power supplies to reduce the voltage ripple as well as input and output smoothing as an LPF.

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Capactitor Types

Ceramic:These offer low cost and high capacitance in a small physical size. Normally there are two types, the ‘High Stability Temperature Compensating’ type and the ‘Bypass and Coupling’ type. The former for use in resonant circuit and filter applications, with a value largely independent of voltage and frequency. The latter is for use in less critical applications, as they are less stable and have non-linear temperature characteristics and are somewhat voltage dependent.Polyester:These type offer good stability, a large range of values at low cost, and are the most widely used capacitor for general purpose.Polycarbonate:These have a low temperature coefficient, low dielectric loss at high frequency and excellent temperature stability characteristics.Polystyrene:These offer tight tolerance and are highly stable; making them suitable for very stable tuned circuits and oscillators.Polypropylene:This type has a very low dielectric loss and are particularly suitable in audio circuits and sample-and-hold circuits.Mylar:This is the Du Pont tradename for polyester. They usually have an aluminium film deposit on the dielectric and are called metallised polyester.