106-121F

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Fixed inductors are components designed to have an electrical inductance that does not change. They are used in a wide variety of electrical and electronic devices, including wire-wound resistors, resettable polymeric positive temperature coefficient (PPTC) thermistors, standard linear voltage regulators, ultra-low quiescent current linear voltage regulators, switching power supplies, connectors, and integrated circuits (ICs).

The 106-121F is a member of the popular Digi-Key fixed inductor line. It has a wide application field, specifically for use in standard linear voltage regulators and ultra-low quiescent current linear voltage regulators. This type of inductor comes in two form factors, one through-hole mounting style and one surface-mountable style.The working principle behind the 106-121F is relatively simple. The inductor is designed to maintain a consistent current even when the circuit is subjected to a changing DC voltage. This is due to the inductor’s ability to store energy in the form of a magnetic field and then release it in response to a decreasing current. The inductor therefore helps to reduce voltage ripple in linear voltage regulator circuits.In terms of physical makeup, the 106-121F is setup from two mica winding cores, an air core, a stainless steel outer body, and an aluminium inner body. The mica material is used to increase the breakdown voltage of the inductor, while the aluminium and steel help to reduce EMI (electromagnetic interference).The 106-121F is rated for saturation currents up to 33A and rated currents up to 22A. The rated inductance values range from 4.7µH up to 470µH. The operating temperature range is -40 to +125°C. The maximum peak frequency of this device is 100MHz.In terms of electrical characteristics, the 106-121F has 4ps maximum rise time, 8ns maximum fall time, and 30% maximum tolerance. The minimum DCR (direct current resistance) is 2.2 Ohms at 25°C and the wire-winding resistance is 0.2 ohms. The line regulation and load regulation are both within 0.5%.Lastly, the 106-121F is RoHS compliant and has UL VDE 60950-1 approved UL1476 safety certifications. It is suitable for use in commercial, industrial, and medical applications.In summary, the 106-121F fixed inductor is a versatile component designed to maintain a stable current through the use of an electromagnetic field. It has a wide application field, with an operating temperature range from -40 to +125°C and certified safety ratings. It is reliable and energy efficient, making it ideal for use in a variety of linear voltage regulator circuits.

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