TO metal packaging shell

Abstract

The utility model provides a TO metal packaging housing, which comprises a housing body, at least one insulator and at least two pins, and is characterized in that the housing body is provided with at least one sealing hole; the outer side wall of the insulator is connected with the sealing hole; the insulator is provided with at least two lead penetrating holes, the pins penetrate through the lead penetrating holes, one end of each pin is arranged outside the shell body, and the other end of each pin is arranged inside the shell body; a first metal layer is arranged on the inner side wall of a lead through hole of the insulator, so that the complexity of the process is greatly reduced, and the operation requirements on workers are reduced; the air tightness of the whole metal packaging shell is greatly improved, and the yield is further improved.

Description

Technical Field

[0001] The utility model relates to a packaging shell, in particular to a TO metal packaging shell. Background Art

[0002] In the semiconductor packaging process, the protective structure of the cap in the common TO packaging form can provide good protection for the LD chip, and some special working environments require the airtightness of the chip. Due to the requirements of the TO packaging form, the pin leads of the TO tube holder need to be well insulated from the base tube disc. At present, the conventional technical means in the industry is to use finished insulators and base tube discs for solder patch welding. The finished insulator is composed of pin leads, insulating materials, and a metal ring on the outer ring. The metal ring is connected to the base tube disc through welding. The cost is relatively high. The yield problem of patch welding will also lead to a decrease in the electrical performance of the pin leads. The most important thing is that the base tube disc and the pin leads need to be connected through the metal ring. Secondary welding, the airtightness will be greatly reduced; and multiple insulators need to be configured on the TO packaging shell with more pins, which further leads to a decrease in airtightness and increases the complexity of the process. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a TO metal packaging shell, which improves the air tightness of the shell and reduces the complexity of the process.

[0004] The utility model is implemented as follows: a TO metal packaging shell comprises a shell body, at least one insulator and at least two pins, the shell body is provided with at least one sealing hole; the outer side wall of the insulator is connected to the sealing hole; the insulator is provided with at least two lead through holes, the pin passes through the lead through holes, one end of the pin is placed outside the shell body and the other end is placed inside the shell body; the inner side wall of the lead through hole of the insulator is provided with a first metal layer.

[0005] Furthermore, a second metal layer is provided on the outer side wall of the insulator.

[0006] The utility model has the advantages that: the utility model provides a TO metal packaging shell, which greatly reduces the complexity of the process and reduces the operating requirements for workers; the airtightness of the entire metal packaging shell is greatly improved, and the yield rate is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0008] Figure 1 It is a schematic diagram of a TO metal packaging shell of the utility model.

[0009] Figure 2 The utility model is a schematic diagram of an insulator in a TO metal package shell.

[0010] Figure 3 It is a side view without pins in a TO metal package shell of the utility model. DETAILED DESCRIPTION

[0011] See also Figures 1 to 3 As shown, the utility model is a TO metal package shell, comprising a shell body 1, at least one insulator 2 and at least two pins 3, the shell body 1 is provided with at least one sealing hole 11; the outer side wall of the insulator 2 is connected to the sealing hole 11; the insulator 2 is provided with at least two lead through holes 21, the pin 3 passes through the lead through hole 21, one end of the pin 3 is placed outside the shell body 1, and the other end is placed inside the shell body 1; the inner side wall of the lead through hole 21 of the insulator 2 is provided with a first metal layer 211; through the first metal layer 211 , the pin 3 can be completely welded in the lead through-hole 21, and the solder can completely seal the gap between the pin 3 and the lead through-hole 21, and at least two lead through-holes 21 are provided on the insulator 2, so that the number of insulators 2 is reduced, which simplifies the connection between the insulator 2 and the sealing hole 11, and it is completely sealed in one step, ensuring airtightness and reducing the difficulty of operation. Due to the provision of the insulator 2, only a small number of sealing holes 11 need to be provided on the shell body 1, and often only one is required, which further reduces the difficulty of manufacturing the shell body 1.

[0012] A second metal layer 22 is provided on the outer wall of the insulator 2; by providing the second metal layer 22, the second metal layer 22 can be connected to the sealing hole 11 on the shell body 1 by solder, and the gap between the sealing hole 11 and the outer wall of the second metal layer 22 is sealed by solder, thereby ensuring the airtightness of the shell.

[0013] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0014] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A TO metal package shell, characterized in that: It comprises a shell body, at least one insulator and at least two pins, wherein the shell body is provided with at least one sealing hole; the outer side wall of the insulator is connected to the sealing hole; the insulator is provided with at least two lead through holes, the pin passes through the lead through holes, one end of the pin is placed outside the shell body and the other end is placed inside the shell body; the inner side wall of the lead through hole of the insulator is provided with a first metal layer.

2. A TO metal package shell as claimed in claim 1, characterized in that: A second metal layer is provided on the outer side wall of the insulator.

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