FCN1206A122J

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Film capacitors, also known as plastic film capacitors, are a type of capacitor, made of a thin plastic film as the dielectric, typically polyester, polypropylene, Teflon or polycarbonate, with metal electrodes deposited on the two sides of the film. They are polarized capacitors and usually of tubular shape with a sealed metal or plastic body package, but they also come in many other shapes.

The FCN1206A122J series film capacitors are a wide range of metallized polyester film capacitors designed for general purpose, ac and dc blocking, snubber, timing and motor start applications.

The FCN1206A122J is a 1206 SMT capacitor with a maximum DC voltage of 50 volts, a maximum capacitance of 100uF, with a maximum ripple current of 250mA and a maximum AC voltage of 50 volts. This series of capacitors stands out from the rest thanks to its low ESR, low profile, high ripple current capabilities and excellent temperature rise performance.

The structure of the FCN1206A122J consists of metallized polyester film as the dielectric, and two nickel-plated aluminum outer electrodes in the shape of a cylinder. The capacitor is fully enclosed in a plastic shell. This particular model is designed to provide excellent electrical performance in both high and low temperature solder reflow operations.

The working principle of a film capacitor relies on the electrostatic field generated between two conducting surfaces. The electrostatic field creates a charge imbalance which relaxes towards equilibrium after being connected to an electrical power source. The amount of charge that can be stored by the capacitor is known as capacitance and is dependent on the distance between the two conducting surfaces and the permittivity of the dielectric material between them.

FCN1206A122J film capacitors are mainly used in automotive, industrial, computers, consumer electronic and telecommunication applications. Examples of application areas include:

• DC blocking
• Signal smoothing
• Noise or EMI filtering
• High frequency oscillator/sensing circuitry
• Timing and motor start applications

Due to the range and depth of their features, low ESR, low profile, and high ripple current capabilities, FCN1206A122J film capacitors are a very popular and reliable choice for both consumer electronics and industrial applications.

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