SCRN229R

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Film capacitors, or film dielectric capacitors, are passive components used in electronics that store electric charge in an electric field. They consist of two electrical conductors separated by a dielectric material, or an insulator, in which electrical charge is stored. A film capacitor is capable of holding much higher energy per unit volume (electrical capacitance) when compared to other types of capacitors, such as ceramic capacitors and electrolytic capacitors. The SCRN229R is a polarized, aluminum-and-polyamide-film capacitor that is widely used in consumer electronics for various applications.

The SCRN229R film capacitor is built on a rolled, anodized aluminum can with a molded-polyamide top. The housing is filled with oil to protect and help stabilize the capacitor. An internal carbon-impregnated paper layer serves as the dielectric, and two metalized aluminum windings (acting as electrodes) are wrapped around it. This construction provides the capacitor with a long-term stable capacitance rating, low loss and good reliability. It also makes the capacitor RoHS-compliant, meaning it is free from hazardous substances such as lead and cadmium.

The SCRN229R capacitors are rated at a voltage level (rated voltage) that allows them to be used in a wide range of applications. They are particularly well-suited for use in low-power filter applications, such as power-supply and filter circuits. They can also be used in various consumer electronics, such as TVs, computers and audio devices. Additionally, they are used in many industrial, automotive and medical applications, as well as in miniature and/or portable devices.

The SCRN229R film capacitors offer good performance and reliability at the rated voltage. They are relatively low ESR (equivalent series resistance) and ESL (equivalent series inductance). The self-healing properties also add to the reliability of the components. Finally, it has a long MTTF (mean time to failure) rating, making it a suitable choice for long-term applications.

The working principle of the SCRN229R film capacitor is based on the creation of an electric field between two conductors, and its behavior is governed by the same laws of electrostatics that apply to all capacitors. When a DC voltage is applied across the terminals of the film capacitor, electrons flow from the negative electrode to the positive one, creating an electric field between the two. The electric field stores energy in the form of an electrical charge, which can be discharged later when the voltage across the terminals is reversed.

Since film capacitors are polarized, they must be connected properly for them to work effectively. The negative and positive terminals must be connected to the negative and positive terminals, respectively, of the DC power source. Failure to do so will result in the capacitor being damaged and possibly reducing its lifespan.

The SCRN229R film capacitor is widely used in low-power filter applications, due to its long life span, stable capacitance and low losses at rated voltage. It is also used in many consumer, industrial, automotive, and medical applications due to its RoHS compliance. Thanks to its good performance characteristics, it has become a well-established solution in the market.

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