NCE01H16_NCEP0135F Introduction

There are many well-known brands in the electronics industry, each brand is like a person's name, and its origin and naming have its own unique style. When naming the company, the founders incorporated their nostalgia for the past and expectations for the future. A simple name with many untold stories behind it... . Their success today is due to the founders.

According to whether the inversion layer exists in the case of no electricity, MOS tubes can be divided into enhancement type and depletion type. The core of power semiconductors is the PN junction. From diodes, triodes to field effect transistors, various applications are made according to the characteristics of the PN junction. Field effect transistors are divided into junction type and insulated gate type, among which the insulated gate type is also called MOS tube (Metal Oxide Semiconductor).

NCE01H16_NCEP0135F

NCE6080

NCE3404Y NCE3400A NCE3400 NCE30ND07AS NCE3008N.

. Today the physics book written by Dr. Felix Zandman is used as a basic textbook in many universities, and his autobiography has been translated into Chinese and many other languages. Felix Zandman experienced the Holocaust, lost loved ones, and lived in the dark underground for 17 months in the haze of death. The component industry and even the history of technological development have left a strong legacy. In 2004 Fortune Magazine selected Vishay as one of America's more admired companies.

For 17 months without the light of day, Zandman's uncle taught him algebra, trigonometry, geometry and physics. It can be said that what Zandman learned during those darker days laid the groundwork for him to start Vishay. After the war, Zandman immigrated to France, earning degrees in Mechanical Engineering, Applied Mechanics and General Physics, and a Ph.D. in Mechanical Physics at the Sorbonne University in Paris. Zandman was born in Poland in 1928. During the Nazi Holocaust in World War II, Zandman was taken in by an old housekeeper whom Zandman's grandmother had rescued. He and four others hid under the housekeeper's floor for 17 months before they were able to escape the Holocaust. . In 1956, Zandman immigrated to the United States and founded Vishay in 1962. .

Figure four types of MOSFETs and their graphical symbols. According to the two points of the conductive channel and the process of channel formation, MOS tubes can be divided into: P-channel enhancement MOS tubes, P-channel depletion MOS tubes, N-channel enhancement MOS tubes and N-channel depletion MOS tubes . Power MOSFETs are generally rarely used in P-channel. Since the mobility of holes is lower than that of electrons, the on-resistance of P-channel transistors is larger than that of N-channel transistors for the same channel size. .

NCE01H16_NCEP0135F

NCE4953

NCE4612SP NCE30H32VD NCE3402 NCE3402A NCE30H21.

NCE3008M NCE3010S NCE3011E NCE30D0808J NCE3018AS.

NCE3020K NCE3025Q NCE3035K NCE3025G NCE3030K.

When the applied forward voltage increases, the concentration of unbalanced minority carriers increases and the concentration gradient also increases, and when the applied voltage decreases, the change is opposite. Diffusion capacitance: When a forward voltage is applied, the non-equilibrium minority carrier concentration near the interface of the depletion layer is high, far from the non-equilibrium minority carrier concentration is low, and the concentration gradually decays from high to 0 until it reaches zero. The process of charge accumulation and release in this phenomenon is the same as that of capacitor charging and discharging, which is called diffusion capacitance.

NCE01H16_NCEP0135F

NCE25TD120WT NCE25TD120VT NCE15TD120LT NCE25TD120LT NCE40TD135LT.

The functions of the MOS tube in the protection board are: 1. Detect overcharge, 2. Detect over-discharge, 3. Detect over-current during charging, 4. Detect over-current during discharge, 5. Detect over-current during short circuit.

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