Thyristor

Abstract

The invention discloses a thyristor, which comprises a cap, an upper molybdenum sheet, a chip, a lower molybdenum sheet and a base arranged sequentially from top to bottom, wherein one side, contactedwith the upper molybdenum sheet, on the cap is provided with a preset path for leading out a gate wire; the preset path comprises a first leading-out hole with a preset section length; and other sections of the preset path are provided with second leading-out holes or leading-out grooves. When the thyristor disclosed in the invention is applied, the gate wire is led out as the first leading-out hole is arranged in the cap, a phenomenon that the upper molybdenum sheet rotates to pull the gate wire to influence conduction of the gate of the thyristor can be prevented, and during a packaging process, the gate assembly difficulty is reduced, and direct contact between the upper molybdenum sheet and the chip is ensured, and cooling of the device is ensured.

Description

technical field [0001] The present invention relates to the technical field of electronic components, and more specifically, relates to a thyristor. Background technique [0002] The traditional thyristor has three electrodes. The cathode and the anode are respectively drawn out through the upper molybdenum sheet, the lower molybdenum sheet, the copper platform of the tube cover, and the copper platform of the tube seat. Since the gate region of the thyristor chip is usually in the middle of the cathode surface of the chip, the gate is generally drawn out of the tube shell through the gate line. There are two commonly used ways to lead out the gate line of the thyristor as follows. [0003] The first is to slot the molybdenum sheet on the thyristor to lead out the gate line. [0004] This method has obvious disadvantages. Since the molybdenum sheet and the chip are circular, the upper molybdenum sheet may rotate relative to the chip when the component is transported or sha...

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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