LLG2D152MELB35

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Aluminum electrolytic capacitors are widely used components in electronic circuits and are a type of electrolytic capacitor. They are used in DC power supplies, DC-to-DC converters, and electronic filters. An aluminum electrolytic capacitor (EL-CAP) consists of two aluminum foils which have been rolled up together with a paper separator in between which is soaked in an electrolyte. It is a polarized capacitor with an anode and a cathode. Current flows from the anode to the cathode, creating an electric field across the capacitance and a capacitor should always be connected in a circuit with the anode and the cathode in the correct orientation.

LLG2D152MELB35 Application Field and Working Principle

The LLG2D152MELB35 is a general purpose through-hole axial lead aluminum electrolytic capacitor from KEMET Corporation. It has two ratings - a DC working voltage rating of 35V and a capacitance value of 152 μF with an operating temperature range of -25°C to +85°C. Its size is 11.7mm≤D≤13.2mm, and its life expectancy is 1,000 hours at 105°C. It has a polarity of positive-negative, and its tolerance rate is ±20%. The LLG2D152MELB35 is designed for D.C. applications in automotive, low voltage lighting, power supplies, and telecommunications equipment.

This aluminum electrolytic capacitor is made up of an aluminum anode, which is covered with a thin oxide layer; a cathode of aluminum oxide and a paper spacer which is soaked in an electrolytic solution. The electrolyte is a mixture of a metal hydroxide (like aluminum or lead hydroxide) and a liquid solvent. The oxide layer acts as an insulator between the anode and cathode, and the electrolyte provides an ionic path for electron flow from the anode to cathode, creating an electric field across the device. As the current passes through the capacitor, the electrolyte reduces the electric field and acts as a charge storage medium. Thus, the aluminum electrolytic capacitors LLG2D152MELB35 can act as peak-load filters, energy-storage, and component-level noise-limiting circuits. Additionally, they have a long-life expectancy compared to other capacitor types due to its construction and materials.

The LLG2D152MELB35 has a good temperature coefficient and temperature stability. Moreover, its low-ESR (Equivalent Series Resistance) and higher ripple current handling capability makes it a good choice for bulk energy storage applications, and its temperature capability extends its range of applications even further. The LLG2D152MELB35 is typically found in power supplies, D.C. circuits, audio equipment, switching power supplies, HF/SSB transmitters, and radio communication systems.

Aluminum electrolytic capacitors like the LLG2D152MELB35 are a mainstay for power supplies because of their large capacitance values, low temperature coefficient, small size, and low cost. They have a wide array of applications and are used to filter out high frequency noise, smooth out AC signals, and store large amounts of energy for use in peak-load operations. With their reliability, robustness and low cost, they have become the capacitor of choice, for many applications in modern electronic circuits.

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