Alloy diode on a single chip N-type germanium or silicon PN junction is formed by adding the production of indium alloy, aluminum and other metal approach. Forward voltage drop is small, suitable for high current rectification. PN junction reverse its large capacitance, therefore suitable for the detection of high-frequency and high-frequency rectification. Diffusion type diode P-type impurity gas temperature of the diode, the heating unit N-type germanium or silicon wafer, so that a single wafer surface into the P-type, this method PN junction. Because PN junction forward voltage drop is small, suitable for high current rectification. Recently, the use of high-current rectifiers mainstream has been transferred to the silicon-silicon alloy type diffusion. Production methods mesa type diode PN junction diode SMD 0.5W although the same diffusion, however, leaving only the PN junction and the necessary parts, the unnecessary portions etched away using drugs. The remaining part will be presented mesa shape, hence the name. Initial production of the mesa type semiconductor material is made of using a diffusion method. Therefore DO41 diodes, again this mesa called diffusion mesa. For this type, it seems that a large current rectifier product model is small, and low current switching product model, but a lot. . Principles and Applications of Zener diode Zener diode (also known as Zener diode) circuit symbol it is this diode is a semiconductor device until the critical reverse breakdown voltage have a high resistance in this critical breakdown point Shandong diode reverse resistance is reduced to a small value, in this low resistivity zone current increases and the voltage is kept constant, the Zener diode is based on the breakdown voltage bins, because this feature, the regulator is mainly used as a regulator or voltage reference element whose voltage characteristics, voltage regulator diode in series for use on high voltage can be obtained through the series more stable voltage. glass diodes, diode, gold integrity provided by the Qingdao integrity Technology Co., Ltd. Qingdao integrity Technology Co., Ltd. (www.qdjcx.com) strong, credible, in Qingdao, Shandong diode industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead gold credit into the brilliant and you work for a better future!