Coaxial connector and method for fabricating the same, and superconducting device

• US 20050020452A1
• Filed: 08/19/2004
• Published: 01/27/2005
• Est. Priority Date: 03/25/2002
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Nakanishi, Teru, Akasegawa, Akihiko, Yamanaka, Kazunori
• Application Number:
  US10/921,195
• Publication Number:
  US 20050020452A1
• Time in Patent Office: Days
• US Class Current: 505/100
• CPC Class Codes: H01R 13/03 characterised by the material, e.g. plating, or coating materials
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/40 specially adapted for high frequency
• CPC Class Codes: H01R 4/68 Connections to or between superconductive connectors

Abstract

A coaxial connector 10 to be connected to a coaxial cable comprising a surface coating layer 20 of indium or an indium alloy being formed on the surface of a terminal 12 which is a central conductor. Since indium similar to an indium-based solder material is used as the material of the surface coating layer 20, a reaction product is prevented from being produced in indium-based solder by the reaction between the material of the surface coating layer 20 and the material of the indium-based solder material. Accordingly, deterioration of the flexibility of the indium-based solder can be prevented, and a superconducting device which can endure the repeated temperature changes between the room temperature and lower temperatures can be provided.

Claims

1. A coaxial connector to be connected to a coaxial cable,

a surface coating layer of indium or an indium alloy being formed on the surface of a terminal of central conductor.

2. A coaxial connector according to claim 1, wherein

the terminal is formed of Cu or an Cu alloy.

3. A coaxial connector according to claim 1, wherein

the terminal is formed of Ni, Pd, Pt, an alloy of Ni and Fe or an alloy of Ni, Co and Fe.

4. A coaxial connector to be connected to a coaxial cable,

a terminal of central conductor being formed of Ag or an Ag alloy.

5. A method for fabricating a coaxial connector to be connected to a coaxial cable, comprising the step of

forming a surface coating layer of indium or an indium alloy on the surface of a terminal of central conductor.

6. A method for fabricating a coaxial connector according to claim 5, wherein

in the step of forming a surface coating layer, the terminal with a flux applied to is immersed in a solder bath to thereby form the surface coating layer on the surface of the terminal.

7. A method for fabricating a coaxial connector according to claim 5, wherein

in the step of forming a surface coating layer, the surface coating layer is formed on the surface of the terminal by immersing the terminal in a solder bath with supersonic waves applied to.

8. A method for fabricating a coaxial connector according to claim 5, wherein

in the step of forming a surface coating layer, the surface coating layer is formed on the surface of the terminal by plating.

9. A superconducting device comprising a coaxial connector to be connected to a coaxial cable, and a superconducting element to be connected to the coaxial cable by the coaxial connector,

a surface coating layer of indium or an indium alloy being formed on the surface of a terminal of central conductor of the coaxial cable, and

the terminal and an electrode of the superconducting element being connected to each other by an indium-based solder.

10. A superconducting device according to claim 9, wherein

the terminal is formed of Cu or a Cu alloy.

11. A superconducting device according to claim 9, wherein

the terminal is formed of Ni, Pd, Pt, an Ni and Fe alloy or an Ni, Co and Fe alloy.

12. A superconducting device comprising a coaxial connector to be connected to a coaxial cable, and a superconducting element to be connected to the coaxial cable by the coaxial connector,

a terminal of central conductor of the coaxial connector being formed of Ag or an Ag alloy.