ALS70A912MF250

Aluminum Electrolytic Capacitors are electrical capacitors which use an electrolytic solution to form an oxide layer on the surface of an aluminum sheet. This oxide layer acts as the dielectric in the capacitors, and is responsible for providing the dielectric strength between the two plates of the capacitor. The ALS70A912MF250 is an aluminum electrolytic capacitor that is mostly used in power supplies and other circuit applications.

The ALS70A912MF250 is a form of radial-type electrolytic capacitor, which means that it has a round shape and is composed of two aluminum plates separated by a dielectric layer. The ALS70A912MF250 has a capacitance of 250 μF, a rated operating voltage of 12V, and a rated temperature of 105°C. The capacitor has a life span of 7000 hours and a maximum operating temperature of 105°C.

Application Field

Aluminum electrolytic capacitors can be used for a variety of purposes. The ALS70A912MF250 is suitable for use in a wide range of power supply and inverter applications. It can be used in power supplies and DC-DC converters to reduce voltage ripples and provide a clean power supply. It can also be used in motor control systems to improve the efficiency of the systems. Additionally, it can be used to filter electronic noise in audio systems and other applications that require clean power.

Working Principle

The working principle of an aluminum electrolytic capacitor is based on the electrolytic solution used in the capacitor. When electric current flows through the electrolyte, an oxide layer is deposited onto the surface of the electrodes, which act as the dielectric. This oxide layer increases the capacitance value of the capacitor. As the applied voltage increases, the oxide layer becomes thinner, reducing the capacitance value. This phenomenon is called voltage derating in aluminum electrolytic capacitors.

The ALS70A912MF250 capacitors are designed to maintain a stable capacitance value over the full operating temperature range from -55°C to 105°C. However, due to the oxide layer thinning out at higher temperatures, the capacitance value drops. Therefore, in applications where the operating temperatures exceed 105°C, it is recommended to de-rate the capacitors to maintain the same capacitance value.