04023J1R4BBWTR

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Introduction to Thin Film Capacitors

Thin film capacitors are made by coating a thin layer of metal or ceramic dielectric material on a substrate such as stainless steel, glass, or ceramic. The thin layer of dielectric material provides a high-k dielectric constant, which allows for the fabrication of very compact components with a low equivalent series resistance (ESR) and minimal parasitic reactance. Since the substrates and materials used to fabricate thin film capacitors are cost effective, these capacitors are often the ideal choice for high-performance circuits with small size requirements, especially in the medical, aerospace and defense industries.

Overview of 0402 3J1R4BBWTR Capacitor

The 0402 3J1R4BBWTR capacitor is a thin film capacitor manufactured by Yageo. It has a maximum capacitance of 4.7µF, an operating temperature range of -55°C to +125°C, and a maximum voltage of 25Vdc. It has very low ESR and low parasitic reactance due to its thin film construction. This capacitor has a wide variety of applications in various fields, including automotive, aerospace, defense, and medical.

0402 3J1R4BBWTR Application Field and Working Principle

The 0402 3J1R4BBWTR capacitor is ideal for use in electronic circuits that require high capacitance, high-accuracy, low-noise, and robust performance. It is commonly used in medical electronics, automotive electronics, aerospace, and defense applications. Common applications include power management, voltage regulation, signal filtering, clock signal buffering, and radio frequency (RF) signal conditioning. The working principle of a thin film capacitor is basically the same for all capacitors. It consists of two electrodes, an insulating dielectric layer, and leads or terminals. When a voltage is applied across the two electrodes, a current flows through them, resulting in the storage of energy in the electric field between the electrodes. As the voltage across the two electrodes increases, the magnitude of the electric field also increases, which results in a higher capacitance. The size, type of material and relative dielectric constant (k) are all factors that determine the total capacitance of a thin film capacitor.

Conclusion

In conclusion, the 0402 3J1R4BBWTR capacitor is a thin film capacitor with a wide range of applications in the medical, automotive, aerospace, and defense fields. Its thin film construction provides for a high capacitance value and low parasitic reactance, making it ideal for signal filtering, power regulation and conditioning, and voltage regulation applications. Its low equivalent series resistance (ESR) and high-k dielectric constant make it ideal for small size requirements, making it a very attractive choice for high-performance circuitry.

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