Electrical Engineering Definitions
"A" "B" "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"

An Inductor is a 2-terminal passive device having a coil of wire wound wrapped around a core [which may be magnetic metal or air] to produce a high inductance in the wire. The terminals may be pads on a surface mount component or leads on a through-hole component. The graphic shows a Surface Mount Device [SMD]

SMD Inductor Package Dimensions
Open-Frame SMD Inductor

In this particular case this inductor is un-shielded, or in an open frame. The shape and dimensions of the inductor is provided as well as the Printed Wiring Board [PWB] Land Pattern for attachment.

The ability to see the coil is a direct indication that the component is an open-frame device. A closed frame part would be encased in a metal shell to shield the near by components from the magnetic field, or protect the coil from incoming noise.

Surface Mount Chip Inductor Package Dimensions
SMD Chip Inductor
PC motherboard

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