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In this type of diode the junction is formed by contacting the semiconductor material with metal. Due to this the forward voltage drop is decreased to min. The semiconductor material is N-type silicon which acts as an anode and the metal acts as a cathode whose materials are chromium, platinum, tungsten etc. Due to the metal junction these diodes have high current conducting capability thus the switching time reduces. So, Schottky has greater use in switching applications. Mainly because of the metal- semiconductor junction the voltage drop is low which in turn increase the diode performance and reduces power loss. So, these are used in high frequency rectifier applications. The symbol of Schottky diode is as shown below.
This model original produce by Japanese brand Sanken (SK), and later SK stop production,and American diode company HVCA (Dean Technology) start to produce it and market it in same part number “UX-F0B”. It is most popular model design-in to world famous (high end) X-ray power source manufacturer’s PCB board, due to very fast recovery time and high frequency (300khz) feature. (This is very similar to most popular Murata high voltage ceramic capacitor (15kv 102 ZM materaial, DHR4E4C102K2FB) also used in high end X-ray power source.) , DHR4E4C102K2FB market demand can be one million pcs globally. since this UX-FOB model is super hot,some less famous Japanese component manufacturer even produce replacement model call “MD8CP5” . HVC also offer alternative and replacement model to UX-FOB, HVC model call HVD-SL513G, which provide same 40ns respond and 13kv reverse voltage, higher voltage withstand can making component more reliable and customer can series connection less diode to achieve given value,and finally cost down to general PCB board. Discover more information at 10kv high voltage diodes.
Different Dielectric Materials, Different Prices: Ceramic capacitors of high voltage 35KV 2200pf, a wide dispersal of the different materials! Different materials, different prices, that nobody understands.However, when the price difference of 10 times or so, how treat?Customers have told me: Morgan, there are providers that offer Fengyun high voltage ceramic capacitor is 3.8 Yuan.But you is reported material N4700 high-voltage capacitors, the price of $42 the gap is too big, please help me to explain!
The ceramic capacitors variety shape chip capacitors to large power ceramic capacitor sizes differ considerably from 0402 (about 1 × 0.5mm) package. Can be divided into ?, ? type semiconductor ceramic capacitor dielectric material properties; according to the size of the reactive power can be divided into low-power, high power ceramic capacitors; operating voltage can be divided into low and high voltage ceramic capacitors; shape according to the structure can be divided into wafer-shaped tube, drum, bottle-shaped, cylindrical, plate-shaped, laminated, monolithic, massive, pillar, mandrel type. Find even more information at https://www.hv-caps.com/.