381LX151M350K012

Introduction to Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are used mainly when a high capacity is needed in a small case size. The large surface area of the aluminum anode permits a relatively high capacitance value for given dimensional restrictions. Aluminum electrolytic capacitors are the most commonly used specialized capacitors and are commonly used to couple signal and power stages, and for energy storage. The construction and working principle of aluminum electrolytic capacitors in relation to the part number 381LX151M350K012 will be explored in this article.

Construction of Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors consist of two levels of aluminum foil: the anode and the cathode, electrochemically etched and spaced-out to high precision. The gap between the two levels of aluminum foil is occupied by an electrolyte. A silvered paper acts as the separator in between the two aluminum layers. For higher surge ratings, a flexible paper roll is also included in the capacitor. The cathode is connected to the capacitor\'s external body and the anode is connected to one of the capacitor\'s leads. This is then sealed and filled with an electrolyte to complete the capacitor construction.

381LX151M350K012 Application Field and Working Principle

The part number 381LX151M350K012 is a type of aluminum electrolytic capacitor. This particular capacitor model is designed primarily for use in switching power supplies, DC-DC converters, and LED lighting circuits. It can also be used in audio-frequency circuits, motor control circuits, rectifiers, and other types of circuit diagrams. This part number has a capacitance of 151uF, is rated at 350V DC, and has a temperature range of -40 to +85°C.

The capacitor model 381LX151M350K012 works on the principle of charge separation in a dielectric. When a DC voltage is applied, the positive charge accumulates on one terminal (the anode) and the negative charge accumulates on the other (the cathode). The electrons that accumulate on the cathode then travel across the dielectric to the anode, and the capacitor stores energy as the electric field between the positive and negative plates. When the current is removed, the electric field still remains and this causes the remaining charge to flow in reverse, creating the stored energy that makes up the capacitor\'s voltage.

Conclusion

In conclusion, aluminum electrolytic capacitors are a type of capacitor designed to offer high capacitance in a relatively small package. The part number 381LX151M350K012 is a particular type of aluminum electrolytic capacitor designed for use in circuits requiring high capacitance, high temperature, and high DC voltage ratings. The capacitor works by accumulating positive charge on one terminal (the anode) and negative charge on the other (the cathode), which creates an electric field capable of storing energy.