Introduction and category of SMD Inductor
The SMD inductor is only used in the output end of the low-voltage DC control power supply. Its application is seen in the π shape filter circuit of CLC with the filter capacitor, which can stabilize the output current (inhibit current mutation). Inductance components, consisting of a single coil, some with a magnetic core (large inductance), generally expressed in units of μH and mH, current values ranging from a few milliamps to several hundred milliamps.
Chip inductors have round, square and rectangular packaging forms, the color is mostly black. With core inductance (or round inductance), from the appearance of easy to identify. However, some rectangular inductors are more like patch resistance components in appearance. Frequency converter manufacturer's label for the chip inductance on the circuit board, marked with the word "L". The working parameters of inductance include inductance, Q value (quality factor), DC resistance, rated current, self-harmonic frequency, etc. However, due to the limitation of the patch's electrical sensing volume, most of them only mark the inductance, while other parameters are not marked, which is often indirect labeling method. The labeling on the patch inductance body is only part of the information of the whole specification and model, that is, most of them are only the inductance information.
