BEST Brand choice FBelec SMD Inductor
In general, the inductance in electronic circuit is air core coil
or coil with magnetic core, which can only withstand low voltage through small current; The power inductors also have hollow coils and magnetic cores. The main feature is that they are wound with thick wires and can withstand tens of AMPS, hundreds, thousands, or even tens of thousands of amps.Ferrite Chip Inductors,multilayer inductors. Power chip inductors are divided into two types: with and without magnetic cover, which are mainly composed of magnetic core and copper wire. It mainly plays the role of filtering and oscillation in the circuit.Inductors
, FIlters & Chokes
Main products and applications: power inductor, molded inductor, integrated inductor, magnetic glue inductor, laminated inductor, chip inductor, power inductor, adjustable inductor, chip inductor, high power inductor, high current inductor and other products. The products are widely used in digital products, PDA, notebook computers, mobile phones, network communications, graphics cards, LCD backlight, power modules, automotive electronics, security products, office automation, home appliances, walkie talkies, electronic toys, sports equipment and medical instruments.
Selection principle for The magnetically shielded inductors
The three most important points to consider when selecting inductors for portable power applications are size, size, and size. The circuit board area of mobile phone is very scarce and precious, especially when various functions such as MP3 player, TV and video are added to the phone. The increase of function will also increase the current consumption of the battery. Therefore, modules previously powered by linear regulators or directly connected to batteries require more efficient solutions. The first step towards a more efficient solution is the use of magnetic step-down converters. As its name implies, an inductor is required. Surface Mount Inductors. In addition to the size, the main specifications of the inductance include the inductance value at switching frequency
, DC impedance (DCR) of the coil, rated saturation current, rated RMS current, AC impedance (ESR) and Q factor. Depending on the application, the selection of inductance type - shielded or unshielded - is also very important.SMD power inductors
Similar to DC bias in capacitor, manufacturer a's 2.2 μ H inductance may be completely different from that of manufacturer B. In the relevant temperature range, the relationship between inductance value and DC current is a very important curve, which must be obtained from the manufacturer. The rated saturation current (isat) can be found on this curve. Isat is generally defined as the DC current when the inductance drop is 30 [[%]] of the rated value. Some inductance manufacturers do not specify isat. They may only give the DC current when the temperature is 40 ℃ higher than the ambient temperature.
