SD18-4R7-R

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Fixed inductors are important passive electronic components widely-used in various circuits. Compared with the widely-used adjustable inductors, they provide more stable inductor parameters and higher inductance efficiency. Therefore, when designing a circuit, selecting the suitable fixed inductive element is very important. Among many kinds of fixed inductors, SD18-4R7-R is one popular type. This article aims to discuss its application fields and working principle.

SD18-4R7-R fixed inductor is a ferrite core inductor. It is manufactured with high quality material and with very precise inductance and tolerance specifications. It is a four terminal inductor for general use, but small in package size. SD18-4R7-R fixed inductor is especially suitable for switching power supplies, power controllers, and power drivers, and has been widely used in these application fields.

SD18-4R7-R fixed inductors feature a wide range of inductance from 4.7uH to 47mH and low DCR resistance from 0.115ohm to 1000ohm. Besides, SD18-4R7-R has very good temperature and frequency characteristic, along with amazing resistance to saturation and low EMI noise. As a result, SD18-4R7-R fixed inductor has become the preferred choice for both high-performance and cost-sensitive applications.

The basic working principle of the SD18-4R7-R fixed inductor is that when a current passes through it, the inductor creates a magnetic field. This magnetic field can also produce a voltage, which is proportional to the rate of change of the current passing through it. The SD18-4R7-R fixed inductor has four terminals, two of which are used to provide input current and two of which are used to receive output voltage. When the input current is constant, the output voltage will remain constant as well. However, when the input current starts to increase or decrease, the output voltage of the inductor will also increase or decrease accordingly.

In conclusion, the SD18-4R7-R fixed inductor is a very popular type of inductor, which is widely used in various applications. It has excellent performance in terms of its inductance, tolerance, temperature and frequency characteristics. Furthermore, it is also easy to use, as its basic working principle is simple and straightforward. Therefore, for those who are looking for a reliable and cost-effective fixed inductor, SD18-4R7-R fixed inductor is highly recommended.

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