San Diego Super Aluminum Electrolytic Capacitor

Who makes aluminum electrolytic capacitors?

Tecate Group offers aluminum electrolytic capacitors that address the various electrical, mechanical, and environmental design challenges created by today's sophisticated electronic equipment. Low impedance, wide temperature range.

What are the different types of electrolytic capacitors offered by Tecate group?

There are three types of electrolytic capacitors offered by Tecate Group: Aluminum electrolytic: Aluminum electrolytic capacitors include an aluminum foil anode with an etched surface that forms a very thin surface of aluminum oxide, which acts as the dielectric.

Why do aluminum electrolytic capacitors have colossal capacitance?

Aluminum electrolytic capacitor construction delivers colossal capacitance because etching the foils can increase surface area more than 100 times and the aluminum-oxide dielectric is less than a micrometer thick. Thus the resulting capacitor has very large plate area and the plates are intensely close together.

Are aluminum electrolytic capacitors good for AC?

These are available for momentary-duty AC applications like motor starting and voltage-reversing applications, but the high DF of aluminum electrolytic capacitors – from 2% to 150% – causes excess heating and short life in most AC applications.

Can aluminum electrolytic capacitors withstand overvoltage?

Aluminum electrolytic capacitors can generally withstand extreme overvoltage transients of limited energy. Application of overvoltage more than about 50 V beyond the capacitor’s surge voltage rating causes high leakage current and a constant-voltage operating mode quite like the reverse conduction of a zener diode.

How do aluminum electrolytic capacitors work?

With non-solid electrolyte aluminum electrolytic capacitors the aluminum cases connect to the negative terminals by contact with electrolyte. The resulting isolation resistance may vary from a few ohms to a few thousand ohms. For axial leaded capacitors and flatpacks the case is connected to the negative lead.