381LX153M016J032

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Aluminum electrolytic capacitors, also known as electrolytic capacitors, are widely used in power supply filters, signal coupling lightning protection circuits, and timing circuits, providing energy storage devices in various electronic circuits. The item 381LX153M016J032 is a good example of an aluminum electrolytic capacitor. This article will discuss the application field and working principle of 381LX153M016J032.

Applications of 381LX153M016J032

381LX153M016J032 is a screw-terminal type, axial-leaded aluminum electrolytic capacitor with an operating temperature range between -55℃ and 105℃. It has a capacitance of 151μF, a rated voltage of 16V, and a tolerance of ±20%. It is widely used in audio equipment, instrumentation, and circuit protectors. 381LX153M016J032 is suitable for use in DC, AC, or combined DC/AC applications.

In audio equipment, 381LX153M016J032 aluminum electrolytic capacitors are used as high-pass and low-pass filter components, cutting off low frequencies and raising high frequencies. In instrumentation, it can be used for voltage filtering of power supplies and for signal input/output filtering. It can also be used as noise filters and as a coupling/decoupling capacitor in power supplies. In circuit protection, the item can provide protection against electromagnetic and radio frequency interference, surge and other short circuit current.

Working Principle of 381LX153M016J032

The main component of 381LX153M016J032 is an electrolytic anode, which is made of two thin layers of aluminum foil separated by a non-conductive electrolyte material. One of the aluminum layers is etched with microscopic pores, forming multiple capacitance elements. This is why electrolytic capacitors are known as anodic capacitors. The other aluminum layer is separated by a dielectric separator, which prevents short-circuiting of the parallel paths formed by the anodic layer.

Anode and cathode connections within the aluminum electrolytic capacitor are reversed compared to normal capacitors. The negative terminal is connected to the anode, and the positive terminal is connected to the cathode. This difference is explained by the electrochemical properties of electrolytes. Because the anode and cathode have different chemical reactivities, electrons will flow through the small pores in the anode layer, establishing an electric field.

When a voltage is applied, the electric field across the dielectric separator creates an electrostatic force that attempts to configure the capacitor elements. The current flow through the electrolyte will cause some of the charge to leak onto the anode layer, thus acting as a source of capacitance several times higher than the rated value. This property, together with the high capacitance and relatively small size, makes aluminum electrolytic capacitors ideal for signal filtering, noise suppression, and other applications.

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