In view of the development direction in recent years and the technology of rectifiers, experts have analyzed and determined the following key points: First, in the terminology of Schottky diodes, Schottky is mainly developed from planar to trench to reduce reverse leakage current . The reason for this change is that Schottky, in order to achieve a lower voltage, will cause the reverse leakage current to rise, and the groove can improve the reverse leakage current and reduce the reverse leakage current. In terms of packaging, high-frequency rectifiers face the development of SMD packaging.
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The production of high-frequency rectifier products mainly includes p-n junction switching diodes, fast recovery diodes, standard recovery diodes, bridge piles, Zeners, transient voltage suppressors, televisions, and transient surge protection components called thyristors TSPD. In addition, Schottky diodes and rectifiers developed using MOSFET technology are called SBR (Super Blocking Rectifier).
Experts further pointed out that the characteristics of SBR are lower than that of Schottky, and the reverse leakage current is smaller than that of Schottky. This is a combination of the advantages of Schottky and switching diodes. SBR technology ultra-thin packaging can meet customers' small size and high current density requirements. He insisted that in the photovoltaic industry, SBR products can meet the demand of junction temperature of 200 ℃, and the leakage current is very small. In addition, in the switch of p-n junction diode and high-frequency Schottky diode rectifier, the product appearance size is miniaturized and the current density is increased. Experts say that PowerDI packaging technology can greatly increase the current density. For example, in the case of SOD123 package, 1A current can be borne by shoteki, but the compatibility of SOD123 package can reach 3A; for example, general schottky can only withstand 0.5a current in SOD323 package, while in PowerDI323 (SOD123 In the packaging mode of compatible packaging technology, the current even reaches 2A.
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The development of high-frequency rectifiers is widely used in information, communications, household appliances, office equipment, measurement/control equipment (including various medical, national defense, aerospace, automobile transportation, etc.). Basically, rectifiers are an essential part of the power management module of electronic products. At the same time, compared with general electronic products, there is only a life cycle of 3 to 12 months. The life cycle of high-frequency rectifiers is very long and less affected. Specific industries and specific application systems are affected by climate change. Therefore, in general, the overall demand for rectifier products can grow healthily with the development of various electronic products.