M39018/04-0048

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Aluminum Electrolytic Capacitors: The M39018/04-0048 application field and working principle

Aluminum electrolytic capacitors are electronic components with the highest energy density, making them a popular choice for applications such as smoothing ripple current or storing energy and releasing it when required. The M39018/04-0048 aluminum electrolytic capacitors are a series of military-grade aluminum electrolytic capacitors developed by Vishay Intertechnology Inc., with a rated voltage range of 16-25VDC.

Application Field

The M39018/04-0048 aluminum electrolytic capacitors are designed for military grade applications, meeting the military specifications of MIL-PRF-39018. This makes them an ideal choice for demanding conditions, such as harsh environments and continuous extreme temperatures. Due to their quality and long-term reliability, these products are widely used in military and aerospace applications. Besides military and aerospace applications, the M39018/04-0048 aluminum electrolytic capacitors are also useful in civil applications such as industrial control systems, computer power supplies, automotive electronics, and consumer electronics.

Working Principle

An aluminum electrolytic capacitor is composed of two aluminum plates separated by an absorbent paper soaked with an electrolyte. One plate (known as the anode) is made partially porous by chemical etching, creating numerous small holes for the electrolyte to access and to deposit its ions. The other plate (known as the cathode) is solid and acts as a plain vanguard. When a voltage is applied across the capacitor, the charges will flow in the form of electric current from the anode to the cathode and generate electric field. As a result of the applied electric field, a layer of positive charges will be accumulated on the anode side and a layer of negative charges will accumulate on the cathode side, forming an electric dipole from the static charge. This process, known as "polarization", creates a charge storage effect that enables capacitors to store energy. Additionally, the porous nature of the anode allows it to absorb more ions, which enhances the capacitive effect and makes the aluminum electrolytic capacitor much more suitable for storing energy.

Conclusion

The M39018/04-0048 aluminum electrolytic capacitors are ideal for the demanding conditions of aerospace and military applications, as well as civil applications such as industrial control systems, computer power supplies, automotive electronics, and consumer electronics. The working principle of the M39018/04-0048 aluminum electrolytic capacitors is based on the polarization effect and absorbency of the anode plate, which makes it capable of storing energy and releasing it when needed.

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