Airtight terminal

Abstract

Provided are: an airtight terminal which is devised so that a can case and the airtight terminal can be sealed together in a simpler and less inexpensive way; an electric device package; and a methodfor manufacturing an electric device package. Provided is an airtight terminal comprising: a lid body made of a dish-shaped metal thin plate having a through-hole in a plate surface thereof; a lead penetrating through the through-hole of the lid body; and an insulating material sealing the lead and the lid body together in an airtight manner. The lid body includes, along a peripheral portion thereof, an engaging portion for seamed sealing with the can case. The airtight terminal is further provided with: a lid body made of a dish-shaped metal thin plate having a through-hole; a metal ring which is passed through the through-hole of the lid body and is fixed to the lid body in an airtight manner; a lead penetrating through the metal ring; and an insulating material sealing the lead and themetal ring together in an airtight manner. The lid body may be deformed along the peripheral portion thereof into an airtight terminal having an engaging portion for seamed sealing with the can case.

Description

technical field [0001] The invention relates to an airtight terminal. Background technique [0002] Hermetic terminals are used in the packaging of electronic components such as crystal oscillators that require high airtightness. Commonly used airtight terminals include: metal outer ring, which is made of Kovar alloy, iron-nickel alloy (42 alloy), steel, stainless steel, etc.; lead wire, which is formed of the same Kovar material; insulating glass, which seals the metal outer ring. ring and leads; and an iron cap, which is pressed into the metal outer ring and secured. A pair of through holes are formed on the metal outer ring, and lead wires pass through the through holes. The gap between the lead wire and the metal outer ring is hermetically sealed by insulating glass. The leads are electrically insulated from the metal outer ring by insulating glass. [0003] For such conventional airtight terminals, the sealing method between the can shell and the airtight terminal i...

AI Technical Summary

Problems solved by technology

For example, in the case of resistance welding, the larger the product, the higher the voltage and current, resulting in higher costs

Especially when sealing, even if it is partially sealed, high temperature and high pressure are applied to the terminal and the end of the tank body, which may cause airtight failure, performance degradation or destruction of built-in devices

In addition, since hermetic terminals require glass sealing at high temperatures, thicker metal plates are used in the metal outer ring of conventional hermetic terminals, causing problems in terms of weight reduction in larger products

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