JP3049952B2 - How to attach a coaxial airtight connector to an airtight package - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of attaching a coaxial hermetic connector to a hermetically sealed package (dual in-line package or butterfly package).

[0002]

2. Description of the Related Art A conventional hermetically sealed package lacks consideration for an input / output terminal for a high-frequency signal, so that a hermetically sealed package cannot be used as a package for a high-frequency module.

[0003]

In order to use the hermetically sealed package as a package for a high-frequency module,
The hermetically sealed coaxial hermetic connector is attached to the hermetically sealed package. In this mounting, it is desirable to braze with a silver braze in order to secure the airtightness of the package. However, when a silver braze is used, the heat at the time of mounting may impair the characteristics of the coaxial airtight connector.

When the coaxial type airtight connector is directly mounted on the frame of the hermetically sealed package, the thickness of the frame of the airtightly sealed package is thin, so that the mounting strength of the coaxial type airtight connector is insufficient and the embedded area of the solder is reduced. Lacks hermetic sealing. SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of attaching a coaxial airtight connector to a hermetically sealed package with the hermetically sealed package having airtightness.

[0005]

In order to achieve this object, according to the present invention, a hole for receiving the pipe 4 is formed in the frame 2 of the hermetically sealed package, and the pipe 4 longer than the hole is inserted into the hole of the frame 2. After brazing the frame 2 and the pipe 4 with a silver solder 6, the coaxial airtight connector 5 is inserted into the pipe 4, and the gap between the inside of the pipe 4 and the outside of the coaxial airtight connector 5 is soldered with solder 7. Fill.

Next, a method of attaching a coaxial airtight connector to a hermetically sealed package according to the present invention will be described with reference to FIG. 1 is a base of a hermetically sealed package, 2 is a frame of the hermetically sealed package, 3 is a pipe mounting plate, 4 is a pipe, 5 is a coaxial hermetic connector, 6 is a silver solder, 7 is a solder,
Reference numeral 8 denotes a solder pool, and 11 denotes a core wire of a coaxial airtight connector.

In FIG. 1, a hole is made in the frame 2 and the pipe mounting plate 3, a hollow pipe 4 longer than this hole is inserted into the hole, and the joint between the frame 2, the pipe mounting plate 3 and the pipe 4 is made of silver solder 6. Brazing with After brazing, the coaxial airtight connector 5 is passed through the pipe 4, and the gap between the inside of the pipe 4 and the outside of the coaxial airtight connector 5 is soldered and filled with solder 7.

[0008]

Next, the operation of FIG. 1 will be described. Since the pipe 4 is brazed to the pipe mounting plate 3 and the frame 2 with a silver solder 6,
Airtightness is maintained. The pipe mounting plate 3 compensates for the lack of pipe mounting strength due to the thin thickness of the frame 2.
The coaxial airtight connector 5 and the pipe 4 are filled with a solder 7 in a gap between the outside of the coaxial airtight connector 5 and the inside of the pipe 4. The length of the pipe 4 determines the size of the area to be embedded by the solder 7, and the larger the area to be embedded, the easier it is to maintain airtightness. Furthermore, the airtightness can be maintained by the solder pool 8 provided in the pipe 4.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment of FIG. 1 will be described with reference to FIG. In FIG. 2, reference numeral 9 denotes a raised plate, and reference numeral 10 denotes a substrate. A hole having the same diameter is formed in a frame 2 (a DIP frame is used in FIG. 2) to which a pipe mounting plate 3 (a DIP flange is used in FIG. 2) having a hole having the same diameter as the pipe 4. The pipe 4 is inserted into the hole, and the pipe mounting plate 3, the frame 2, and the pipe 4 are brazed with silver solder 6.

Next, the core wire 11 of the coaxial hermetic connector 5 (in FIG. 2, a hermetically sealed SMA connector is used) and the substrate 10 are on the same plane, and the bottom-up plate 9 is fixed to the base 1. Finally, the coaxial airtight connector 5 is inserted into the pipe 4, the gap is filled with solder 7, and the core wire 11 and the substrate 10 are soldered.

[0011]

According to the present invention, the input / output terminals for high-frequency signals can be attached to the hermetically sealed package while maintaining hermeticity, and the hermetic sealing of the conventionally difficult high-frequency module can be easily realized. it can. Further, since the package can be standardized, the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a method of attaching a coaxial airtight connector to a hermetically sealed package according to the present invention.

FIG. 2 is a configuration diagram of the embodiment of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base of hermetic sealing package 2 Frame of hermetic sealing package 3 Pipe mounting plate 4 Pipe 5 Coaxial hermetic connector 6 Silver solder 7 Solder 8 Solder pool 9 Bottom raising plate 10 Substrate 11 Core wire of coaxial hermetic connector

Claims (1)

(57) [Claims] 1. A frame (2) of a hermetically sealed package and a pipe
Drill a hole for the pipe (4) in the mounting plate (3) , and
Insert the pipe (4) longer than the hole in the pipe mounting plate (3 ) into the frame (2).
It was inserted into the hole of the hole and the pipe mounting plate (3), a frame (2) Pipe
After brazing the mounting plate (3) and the pipe (4) with silver solder (6), insert the coaxial airtight connector (5) into the pipe (4),
A method of attaching a coaxial hermetic connector to a hermetically sealed package, wherein a gap between the inside of (4) and the outside of a coaxial hermetic connector (5) is filled by soldering with solder (7).