381LQ391M350K032

Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor is an electrolytic capacitor that uses an aluminum foil with an etched surface as the anode. The etched surface area has a greater surface area than the smooth aluminum foil anode surface area. These capacitors are sometimes called polarized capacitors since the etching on the anode foil creates a barrier that forces the current to flow in one direction only. This type of capacitor is characterized by very high capacitance values for a given volume.

The 381LQ391M350K032 aluminum electrolytic capacitor is a radial leaded device with a particularly large capacitance value. This capacitor is designed to operate at a maximum temperature of 105C and has a maximum ripple current of 1.2A. The 381LQ391M350K032 also features an insulation resistance of 100MOhm and a maximum tan delta of .2%, making it an ideal choice for high power applications.

381LQ391M350K032 Application Field and Working Principle

The 381LQ391M350K032 aluminum electrolytic capacitor is ideal for applications that require high capacitance and high ripple current. It is suitable for filtering circuits in power supplies, electronic ballasts, inverter circuits, and snubber circuits. It is also suitable as a decoupling capacitor in high frequency switching power supplies and motor drives.

The working principle of the 381LQ391M350K032 is that of any electrolytic capacitor. An aluminum foil with an etched surface is used as the anode, while a manganese dioxide film is used as the cathode. When a voltage is applied between the two, a current flows in one direction. This current causes the electrolyte to be decomposed to form an oxide layer on the anode. This oxide layer acts as an insulator and increases capacitance. It is this combined effect of the anode, cathode, and electrolyte that gives this type of capacitor its extremely high capacitance.

Furthermore, the 381LQ391M350K032 aluminum electrolytic capacitor also features a hermetically sealed metal case and heavy-bodied electrolyte for extended life under severe environments. At the same time, it also features high insulation resistance and leak current. This makes it an ideal choice for high power applications.

Conclusion

The 381LQ391M350K032 aluminum electrolytic capacitor is an ideal choice for applications that require high capacitance and high-ripple current. It features a hermetically sealed metal case and heavy-bodied electrolyte to ensure long life under severe environments. The anode, cathode, and electrolyte are combined to offer a high capacitance. This capacitor also features high insulation resistance and leak current, making it perfect for high power applications.