ECQ-B1H181KF

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Film capacitors, also known as plastic film capacitors or film dielectric capacitors, consist of a thin plastic film used as a dielectric with metal electrodes deposited on it. The plastic film may have different applications, such as metallized film capacitors, foil capacitors, polyethylene-naphthalate (PEN) capacitors, polypropylene capacitors, and polyester capacitors, among others.

The ECQ-B1H181KF is a film capacitor with a metallized polyethylene naphthalate (PEN) dielectric. This type of capacitor is a surface-mounted high-frequency device made of a PEN film dielectric and has a capacitance value of 1.8µF and a voltage rating of 25V. It is available in a low-profile, compact package measuring 0.081in x 0.041in, making it ideal for applications where space is limited.

The primary application field of the ECQ-B1H181KF capacitor is power supply design, especially in higher frequencies where ceramic devices cannot meet the requirements. It is also suitable for a variety of circuits in telecommunications systems, such as power dividers, switch mode power supplies (SMPS), current spike suppression, and RF circuits.

The working principle of the ECQ-B1H181KF capacitor is based on the charge stored between two conductors separated by a dielectric material. When voltage is applied, electric charge accumulates on the two conductors, creating an electric field. When the applied voltage is higher than the breakdown voltage of the dielectric, the electric field will polarize the dielectric and it will act as an insulating barrier. This results in capacitive coupling between the two conductors.

The ECQ-B1H181KF capacitor features a high working frequency of 6MHz and a low dissipation factor of 0.75%. It also has significantly reduced resonance peaks compared to ceramic counterparts, making it ideal for high-precision applications where ceramic devices may not offer the required frequency stability. The low ESL and ESR values of the ECQ-B1H181KF capacitor ensure higher efficiency in power supplies due to its low power losses.

In conclusion, the ECQ-B1H181KF capacitor is a film capacitor featuring a polyethylene naphthalate (PEN) dielectric with a low profile package. It is suitable for power supply designs for use in high-frequency applications, telecommunications systems, and other high-precision applications. Its working principle is based on the charge stored between two conductors separated by a dielectric material. The ECQ-B1H181KF capacitor is a reliable and cost-effective solution for many low-profile capacitor needs.

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