Fast recovery diode
A fast recovery, diode technology, applied in the direction of semiconductor devices, electrical components, circuits, etc., can solve the problem that the forward recovery characteristics and reverse recovery characteristics of fast recovery diodes cannot meet the requirements, so as to improve the reverse recovery characteristics and reduce oscillation Possibilities, Gap Shortening Effects
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[0018] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0019] In the embodiment of the present invention, according to the direction of the current density in the forward recovery and reverse recovery of the fast recovery diode, as well as the relationship between the p-type doping concentration and its effective value, and the relationship between the n-type doping concentration and its effective value, change Doping concentration distribution and lifetime distribution in n-type and p-type semiconductor regions to improve forward and reverse recovery characteristics of fast recovery diodes.
[0020] In the present inven...
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