SC108-680

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Fixed inductors, such as the SC108-680, are electronic components used in the fields of electrical engineering, ranging from low-frequency applications such as antenna tuning and power supply, to higher frequencies such as radio frequency or higher. This article will outline the application field and working principle of the SC108-680 fixed inductor.

Fixed inductors are electronic components whose resistivity or inductance remains constant during operation. This is unlike variable inductors, which can be adjusted to obtain different resistivities or inductances. The SC108-680 is a high quality, miniature surface mount fixed inductor designed primarily for low frequency switch-mode power supply applications. It offers 4.5mA saturation rating, which is relatively high for a surface mount component.

The operating frequency of the SC108-680 is between 44kHz-68kHz, as given by the acronym “SC” in the part name. It has a typical inductance of 680uH at 1 kHz, with the maximum inductance value of 700 uH ocurring at 70kHz. The rated current of the inductor is 1.9Amps, and it has a reversible magnetic flux density of 30 watts per sq meter. It is rated at a temperature of 105 degrees Celsius, and its DC resistance is reported to be 0.0273 Ohms.

The SC108-680 is encapsulated in an epoxy resin, which provides excellent isolation between the core and outer layers of the inductor. This ensures that the inductor has superior heat dissipation and voltage durability, making it suitable for high-power applications. The inductor is also stable in the environment, withstanding extremely low and high temperatures, as well as humidity levels.

The working principle of the SC108-680 fixed inductor is based on Faraday’s law of induction, which states the current in an inductor produces an opposing magnetic field, which in turn induces a voltage. This voltage is then proportional to the rate of change of the current in the inductor. The inductance of the SC108-680 is directly proportional to the number of turns in the coil, and is inversely proportional to the cross-sectional area of the core. The SC108-680’s coil is wound on a ferrite core, which provides for low magnetic losses.

In addition, the SC108-680’s physical geometry and construction provide for superior manufacturing and reliability. It is designed as a miniature surface mount component, with an industry-standard case size of 12.7 x 8.6 x 5.7 millimeters. It is also available in a lead-free version, which is RoHS compliant, allowing manufacturers to produce products that meet the latest environmental regulations.

The SC108-680 fixed inductor is highly suitable for use in power supply and DC-DC converter applications, due to its high efficiency and reliability. It is also suitable for antenna tuners and motor drives, as well as higher frequency applications such as radio frequency or pulse-type converters. Its miniature size makes it ideal for tight spaces, and its lead-free version ensures that manufacturers are able to adhere to the latest environmental regulations.

In conclusion, the SC108-680 fixed inductor is an excellent choice for low power applications, due to its small size and high efficiency. It is also suitable for higher frequency applications, and its lead-free version ensures that manufacturers can adhere to the latest environmental regulations. Its operation is based on Faraday’s law of induction and its construction provide for superior manufacturing and reliability.

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