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Commodity introduction.
Patch diode, also known as crystal diode, referred to as diode , there are early vacuum electronic diodes; it is a kind of electronic device with unidirectional conduction current. Inside the semiconductor diode, there is a PN junction and two lead terminals. This kind of electronic device has the conductivity of unidirectional current according to the direction of applied voltage. Generally speaking, the patch crystal diode is a pmurn junction interface composed of p-type semiconductors and n-type semiconductors. A space charge layer is formed on both sides of the interface to form a self-built electric field. When the applied voltage is equal to 00:00, the dispersed current and the drift current caused by the self-built electric field are in electrical equilibrium because the carrier concentration difference on both sides of the pmurn junction is equal to the drift current caused by the self-built electric field. This is also the normal characteristic of the diode.
Detailed parameters.

Chip diode tube voltage drop: Silicon diode (non-light-emitting type) forward tube voltage drop 0.7V, germanium tube forward tube voltage drop to 0.3V, LED forward tube voltage drop will vary with different light-emitting colors. There are three main colors, and the detailed voltage drop reference values are as follows: the voltage drop of the red LED is 2.0murmur2.2V, the voltage drop of the yellow LED is 1.8V-2.0V, the voltage drop of the green LED is 3.0V-3.2V, and the rated current during normal light emitting is about 20mA. The voltage and current of the patch diodes are not linear, so it is necessary to connect the corresponding resistors when the different patch diodes are connected in parallel. Chip diode characteristics next to the chip diode, electronic components, a device with two electrodes that only allows current to flow in a single direction. Many uses use its rectification function. The varactor (Varicap Diode) is used as an electronic adjustable capacitor.

商品介紹
貼片二極管又稱(chēng)晶體二極管,簡(jiǎn)稱(chēng)二極管，別的，還有早期的真空電子二極管;它是一種具有單向傳導(dǎo)電流的電子器件。在半導(dǎo)體二極管內(nèi)部有一個(gè)PN結(jié)兩個(gè)引線(xiàn)端子，這種電子器件依照外加電壓的方向，具有單向電流的轉(zhuǎn)導(dǎo)性。一般來(lái)講，貼片晶體二極管是一個(gè)由p型半導(dǎo)體和n型半導(dǎo)體燒結(jié)構(gòu)成的p-n結(jié)界面。在其界面的兩邊構(gòu)成空間電荷層，構(gòu)成自建電場(chǎng)。當(dāng)外加電壓等于零時(shí)，因?yàn)閜-n 結(jié)兩邊載流子的濃度差導(dǎo)致分散電流和由自建電場(chǎng)導(dǎo)致的漂移電流相等而處于電平衡狀態(tài)，這也是常態(tài)下的二極管特性。
                                                                                                                                                         詳細(xì)參數(shù)
貼片二極管的管壓降:硅二極管(不發(fā)光類(lèi)型)正向管壓降0.7V，鍺管正向管壓降為0.3V，發(fā)光二極管正向管壓降會(huì)隨不一樣發(fā)光色彩而不一樣。主要有三種色彩，詳細(xì)壓降參考值如下:赤色發(fā)光二極管的壓降為2.0--2.2V，黃色發(fā)光二極管的壓降為1.8-2.0V，綠色發(fā)光二極管的壓降為3.0-3.2V，正常發(fā)光時(shí)的額定電流約為20mA。貼片二極管的電壓與電流不是線(xiàn)性關(guān)系，所以在將不一樣的貼片二極管并聯(lián)的時(shí)候要接相適應(yīng)的電阻。 貼片二極管特性 貼片二極管，電子元件旁邊，一種具有兩個(gè)電極的設(shè)備，只允許電流由單一方向流過(guò)。許多的使用是使用其整流的功用。而變?nèi)荻O管(Varicap Diode)則用來(lái)當(dāng)作電子式的可調(diào)電容器。