SFA37S5K156B-F

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Film Capacitors have been constructed in some form for nearly a century and their performance has been constantly enhanced since then. There are two types of film capacitors, namely the polypropylene film capacitors and the PTFE film capacitors. In this article, we will be discussing the application field and working principle of the SFA37S5K156B-F film capacitor, which is a polypropylene film capacitor.

The SFA37S5K156B-F film capacitor is mainly used in the field of switch mode power supplies (SMPS) and resonant converters, which use it to bypass AC radiation noise. It is also applicable to circuits that require a certain level of voltage withstanding capability and ripple current. This type of capacitor provides superior energy and heat dissipation and is relatively compact when compared to other types of capacitors.

The SFA37S5K156B-F film capacitor has a special potted construction with a UL 94V-0 case. This makes the capacitor suitable for outdoor as well as indoor environments. The capacitor is also impervious to any external moisture and air, thus making it highly reliable and durable. Additionally, this particular type of capacitor features a low ESR and has an operating temperature range from -55°C to +125°C.

The working principle of the SFA37S5K156B-F film capacitor is relatively simple. The device utilizes a polyester film as its dielectric, which is stored between two metalized electrodes. This type of capacitor can either be polarized or non-polarized. Moreover, the capacitor is constructed with metallized electrodes which are subjected to a continuous alternating current. This current makes the capacitance of the device change constantly, allowing it to absorb and release energy.

In addition, the SFA37S5K156B-F film capacitor can handle high levels of ripple current, usually up to 0.1C. When the device comes in contact with the current, electrons start to accumulate at the edges of the metalized electrodes, forming an electrostatic condenser. The capacitance of this condenser helps to minimize the losses that occur due to the current changes.

To sum up, the SFA37S5K156B-F film capacitor has many different applications in power supplies and resonant converters. It contains a high-grade polyester film dielectric and is able to handle high levels of ripple current. Additionally, this type of capacitor is highly reliable and durable, as it comes with a special potted case that makes it impervious to air and moisture. It is used to bypass AC radiation noise and help provide a certain level of voltage withstanding capabilities.

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