a thyristor

Abstract

The invention discloses a thyristor, which comprises a tube cover, an upper molybdenum sheet, a chip, a lower molybdenum sheet and a tube base which are sequentially arranged from top to bottom. A preset path for leading out the gate line, the preset path includes a first lead-out hole with a predetermined section length, and second lead-out holes or lead-out grooves are provided in other sections of the preset path. Applying the thyristor disclosed in the present invention, the gate wire is led out by setting the first lead-out hole on the tube cover, so as to prevent the upper molybdenum sheet from rotating and pulling the gate wire and affecting the conduction of the thyristor gate, and during the packaging process, the gate wire is lowered. It is extremely difficult to assemble, and the direct contact between the upper molybdenum sheet and the chip is guaranteed to ensure the heat dissipation of the device.

Description

technical field [0001] The present invention relates to the technical field of electronic components, and more particularly, to a thyristor. Background technique [0002] The traditional thyristor has three electrodes, and the cathode and anode are drawn through the upper molybdenum sheet, the lower molybdenum sheet, the copper table of the tube cover and the copper table of the tube base respectively. Since the gate area of ​​the thyristor chip is usually in the middle part of the cathode surface of the chip, the gate is generally led out of the case through the gate line. Commonly used thyristor gate line lead-out methods are as follows. [0003] The first is that the molybdenum sheet on the thyristor is slotted to lead out the gate line. [0004] This method has obvious drawbacks. Since the molybdenum sheet and the chip are both circular, the upper molybdenum sheet may rotate relative to the chip when the component is transported or vibrated. Since the gate line is open...

AI Technical Summary

Problems solved by technology

[0010] In view of this, the object of the present invention is to provide a thyristor to solve the problem that the gate line cannot be drawn out smoothly.

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