B41693A7278Q7

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An aluminum electrolytic capacitor (AEC) is an electronic component used in circuits to store energy and provide capacitive reactance. The B41693A7278Q7 is a type of AEC. It is rated for voltage up to 400 VDC and temperature range of -40°C to +85°C, and is suitable for down-hole oil and gas applications.

The B41693A7278Q7 features extremely low resistance and dielectric losses. It also features an 85% higher insulation resistance compared to conventional type aluminum electrolytics, making it an ideal choice for applications in aviation, military and space. Its exceptionally low equivalent series resistance (ESR) results in stable performance and improved power supply stability when used in high frequency applications.

The primary application field for B41693A7278Q7 is in dry-type transformers. In dry-type transformers, the capacitor has to be able to handle high peak currents. The B41693A7278Q7 is used in these applications due to its low ESR and very high current-handling capability for high-efficiency operation. It is also used as a voltage balancing component in AC voltage converting circuits for high-performance power supplies.

The working principle of the B41693A7278Q7 is based on the principle of capacitance. It is made from two metallic plates, one of which – the anode – is aluminum, and the other is called the dielectric (usually a paper-like substrate saturated with electrolyte). The dielectric, in combination with the electrolyte, forms the electrical barrier between the two plates. The amount of capacitance stored by the capacitor depends on the applied voltage, the size of the plates, and the thickness of the dielectric.

The B41693A7278Q7’s construction features the use of pure aluminum foil as the anode, which is plated with a thin layer of organic corrosion-resistant material. The anode is then folded into a “pin-type” configuration. This configuration helps to ensure a high-level of current-handling performance. The dielectric is a thin, highly absorbent material, such as a paper-like substrate saturated with electrolyte. The capacitor is then sealed with an aluminum housing and epoxy-like compounds.

In summary, the B41693A7278Q7 aluminum electrolytic capacitor is an ideal choice for several applications, from transformers and AC voltage converting circuits to aviation, military and space technologies. It offers exceptional performance with its high insulation resistance and exceptionally low ESR, which ensures stable performance and improved power supply stability in high frequency applications.

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