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SICILON CARBIDE DIODE HAVING HIGH SURGE CURRENT CAPABILITY AND MANUFACTURING METHOD THEREOF
SICILON CARBIDE DIODE HAVING HIGH SURGE CURRENT CAPABILITY AND MANUFACTURING METHOD THEREOF
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机译:具有高浪涌电流能力的碳化硅二极管及其制造方法
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摘要
A silicon carbide diode having a high surge current capability, and including a semiconductor base plate. The semiconductor base plate includes an N-type silicon carbide substrate and an N-type silicon carbide epitaxial layer located on the N-type silicon carbide substrate. The upper portion of the N-type silicon carbide epitaxial layer is provided with a plurality of P-type well regions. The N-type high resistance region is provided under the P-type well region or on the lower surface of the P-type well region. The resistivity of the N-type high resistance region is greater than the resistivity of the N-type silicon carbide epitaxial layer. The N-type high resistance region is provided under the P-type well region, and a plurality of grooves are provided in the P-type well region or a plurality of block-shaped P-type regions uniformly arranged at intervals are provided in the N-type high resistance region.
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