Diode voltage drop: silicon diode (non-luminous type) forward voltage drop 0.7V, germanium tube forward voltage drop of 0.3V, the light-emitting diode forward voltage drop will vary with different light color. There are three main colors, the specific reference values ??drop as follows: a red light emitting diode drop for 2.0--2.2V, a yellow light emitting diode drop of 1.8-2.0V, the green light emitting diode drop of 3.0-3.2V, normal rated luminous when approximately 20mA. Alloyed diode on a single N-type germanium or silicon wafer, and forming a PN junction produced by adding indium alloy, a method of metal such as aluminum. Forward voltage drop is small, suitable for high current rectification. PN junction reverse its large electrostatic capacity, it is not suitable for high-frequency and high-frequency rectifier detector. Diffusion-type diode P-type impurity in a high temperature gas heated single wafer N-type germanium or silicon, so that a single wafer surface becomes a P-type, this method PN junction. PN junction forward voltage drop due to small electronic diodes, 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 PN junction diode mesa Although diffusion same electronic diode products, but electronic diode device, leaving only the PN junction and necessary part of the unnecessary parts eroded by drugs. The remaining part will be presented mesa-shaped, hence the name. Initial production of the mesa, the semiconductor material is made using a diffusion law. So, again this is called diffusion mesa mesa. For this type, it seems that a large current rectifier product model small, and low current switch with the product model, but a lot. Electronic diode manufacturers, electronic diodes, gold credit provided by the Science and Technology Industrial Co., Ltd. Qingdao integrity. Integrity Technology Co., Ltd. Qingdao (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 improve the integrity of innovative ideas will lead the gold into the brilliant and you work for a better future!