MAL215099101E3 Capacitors

Aluminum electrolytic capacitors are based on the physical principles of electrolyte polarization. An electrolyte is an ionic conductor dissolved in water, and under certain conditions, the electric field of the applied voltage can cause a layer of charged particles, usually ions, to form at the interface between the water and the electrolyte. These ions form a layer of insulation between the electrodes, which effectively separates the opposite charges in the electrolyte and prevents them from leaking into each other. The most commonly used electrolyte within the electrolytic capacitor is a mixture of boric acid and ethylene glycol along with other additives.

The MAL215099101E3 is a miniature aluminum electrolytic capacitor from Cornell Dubilier, Inc. It is a non-solvent type, meaning that it does not require the use of potentially hazardous solvents for its operation. Its case size measures at 7.3 mm x 3.2 mm, and its design allows for a low ESR (equivalent series resistance) and a high ripple current rating for capacitor performance. This device is ideal for applications needing very low profile components, such as power management and amplifier circuits.

The working principle of the MAL215099101E3 is based on the traditional aluminum electrolytic capacitor structure: an anodized aluminum film wrapped around a thin plastic-foam core, with a cathode attached to each side. A voltage is applied between the electrodes, causing ions to move from one side of the anode to the other. As these ions move, they deposit themselves onto the aluminum film, creating a very thin but electrically charged surface layer called the “oxide layer”.

This oxide layer acts as a barrier between the two electrodes, blocking current from flowing between them. In order for current to flow through the device, the applied voltage must exceed a certain value called the “breakdown voltage”, which is usually around 4-5V. Once this voltage is reached, an “electrochemical reaction” takes place, forming an extremely thin layer of insulating oxide on the anode surface.

The MAL215099101E3 can operate within a temperature range of -55C to +105C, making it ideal for applications in extreme environments. The device also has an extremely low ESR of 0.22 mOhm and an extremely low leakage current of 0.001µA. This makes this miniature aluminum electrolytic capacitor device suitable for high reliability applications such as switching power supply, general powerline filtering and high-speed transistor protection.

In summary, the MAL215099101E3 is a miniature aluminum electrolytic capacitor that relies on the principles of electrolyte polarization for its operation. Its miniaturized size and extremely low ESR and leakage current make it suitable for high reliability applications in extreme environments. Its anodized aluminum film construction ensures stable performance and allows for a high ripple current rating.