ECQ-E2123JB

Film Capacitors: ECQ-E2123JB Application Field and Working Principle

Film capacitors, also referred to a polyester capacitors or polyesterfilm capacitors, are a type of capacitance device that utilizes a polyester film as the dielectric medium as opposed to a metalized film or ceramic disc. The polyester film is sandwiched between two metal electrodes and the entire device is encapsulated in a plastic casing. The polyester film used in film capacitors is designed to offer superior electrical performance and endure operating conditions with a wide range of temperatures and harsh environments. As a result, film capacitors are often chosen for demanding applications in industrial, commercial, military and aerospace applications.

The ECQ-E2123JB is a polyester film capacitor that offers high voltage and high temperature performance in a wide range of applications. This series is suitable for temperatures ranging between -40°C to +105°C, making them suitable for automotive, military, industrial, telecom and medical applications. This series offers a voltage rating of 630 Vdc and a wide capacitance range from 0.022uF to 2.2uF.

The Working Principle

The core of the ECQ-E2123JB capacitor is a polyester film dielectric material which is sandwiched between two metal electrodes. The film has a very low dielectric absorption which is key for high frequency operations. The metal leads are connected directly to the terminals of the capacitor and provide a fixed capacitance value. To increase the capacitance value, a number of capacitors can be connected in parallel.

When a voltage is applied to the terminals of a capacitor, electrons will be repelled from the negative terminal and attracted to the positive terminal. The film dielectric layer acts as an insulator, blocking the flow of electrons and allowing charge to accumulate on the electrodes. As the voltage is increased, more electrons are attracted to the opposite terminal and the capacitance value decreases. This is known as charge storage; the same effect can be achieved with a battery.

Since the film dielectric layer acts as an insulator, the ECQ-E2123JB can handle higher voltages and higher temperatures than other types of capacitors. The film also has a very low dielectric absorption and can handle higher frequencies, making it ideal for high frequency applications. Additionally, the capacitor is encapsulated in a plastic casing which helps to protect it from shock and vibration.

Application Field

The ECQ-E2123JB capacitor is suitable for a wide range of applications including automotive, military, industrial, telecom, and medical. The high voltage and temperature range of the ECQ-E2123JB make it suitable for demanding applications. Additionally, the low dielectric absorption makes it ideal for high frequency operations. It can be used in switch mode power supplies, DC-DC converters, tank circuit applications, and digitally controlled power supplies.

The ECQ-E2123JB capacitor is a versatile and capable device suitable for a variety of applications. Its ability to handle high voltages, temperatures, and frequencies make it a go-to choice for many applications, and its wide capacitance range make it suitable for both large and small projects. Its rugged construction and plastic casing make it suitable for harsh environments, making it a great choice for industrial and military applications.