MOS is metal-oxide-semiconductor field-effect transistors, or metal-insulator-semiconductors. MOS source and drain can be swapped, they are formed in the P-type backgate N-type area.

     In addition to different source and drain doped different geometries asymmetric MOS , in most cases, these two regions are the same, even if both ends of the tune will not affect the performance of the device, such devices are considered to be symmetrical . In the field of electronics, electronic components are rarely symmetrical, with extremely rare features and shape symmetry is very small, and MOS can be seen as a perfect symmetry, like a perfect coincidence of nature.

MOS definition

     The bipolar transistor amplifies the small changes in the input current and outputs a large current change at the output. The gain of a bipolar transistor is defined as the ratio of the input to the input current (beta). Another type of transistor, called a field effect transistor (FET), which translates the change in input voltage into a change in output current. The gain of the FET is equal to its trans-conductance, defined as the ratio of the change in output current to the change in input voltage.

     FETs affect the current flowing through a transistor by projecting an electric field across an insulating layer. In fact, no current flows through this insulator, so the GATE current in FET is very small. The most common FET uses a thin layer of silicon dioxide as an insulator under GATE. This type of transistor is called a metal oxide semiconductor (MOS) transistor, or a metal oxide semiconductor field effect transistor (MOSFET). Because MOS are smaller and more power efficient, they have replaced bipolar transistors in many applications.

    Common categories in MOS are generally N-channel and P-channel in the market, so MOS are usually classified into two types, that is, P-channel MOS and N-channel MOS, while P channels are common For the low voltage MOS.

     For MOS , Besides the parameters in the common P-channel, N-channel, there are many parameters to note, such as packaging, voltage, gfs, current and so on. Jinan HFZT electronic Co.,Ltd offers a variety of models of MOS , including SOT-23, TO-92, TO-220 package size. In addition to the MOS, HFZT is a high-tech enterprise led by the development, production and sales of semiconductor diodes and transistors. The main products of the "Lujing" brand products include a full range of diodes and triodes including SOT23 / SOD123 / SOD323 / SMA / SMB / SMC and other chip series and DO41 / DO15 / DO27 / TO92 / TO126 / T0220 plug-in series package.