Coaxial terminal, coaxial connector, wiring board, and electronic component testing apparatus

Patent metadata

Field	Value
Publication number	US-11462859-B2
Application number	US-202117201577-A
Country	US
Kind code	B2
Filing date	Mar 15, 2021
Priority date	May 26, 2020
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

A coaxial terminal includes a signal terminal, a tubular ground terminal that covers the signal terminal, and an insulating member interposed between the signal terminal and the ground terminal. The signal terminal includes a main body that is covered by the insulating member, an upper contact piece that extends from the main body to +Z direction side, and a lower contact piece that extends from the main body to −Z direction side. The insulating member has an opening through which a part of the main body is exposed. A following formula (1) is satisfied:L2≥½×L1  (1)where L1 is a length of the insulating member along an axial direction of the coaxial terminal, L2 is a length of the opening along the axial direction.

First claim

What is claimed is:

1. A coaxial terminal comprising:
a signal terminal;
a tubular ground terminal that covers the signal terminal; and
an insulating member that is interposed between the signal terminal and the ground terminal, wherein
the signal terminal comprises:
a first main body that is covered by the insulating member;
a first contact piece that extends from the first main body to one side; and
a second contact piece that extends from the first main body to another side,

the insulating member has an opening through which a part of the first main body is exposed,
a following formula (1) is satisfied:
L 2 ≥½ ×L 1   (1)

where L 1 is a length of the insulating member along an axial direction of the coaxial terminal, and L 2 is a length of the opening along the axial direction,
the ground terminal comprises:
a tubular second main body that holds the signal terminal via the insulating member;
a third contact piece that extends from the second main body to one side; and
a fourth contact piece that extends from the second main body to another side,

the second main body has a cutout that is open at one end of the second main body, and a following formula (2) is satisfied:
W 4 >W 3   (2)

where W 3 is a width of a portion of the signal terminal that faces the cutout, and W 4 is a width of the cutout.

2. The coaxial terminal according to claim 1 , wherein
a whole of the first main body along a width direction of the coaxial terminal is exposed from the insulating member through the opening, and
a following formula (3) is satisfied:
W 2 >W 1   (3)

where W 1 is a width of a portion of the first main body exposed through the opening, and W 2 is a width of the opening.

3. A coaxial connector comprising:
a plurality of coaxial terminals according to claim 1 ; and
a housing that holds the coaxial terminals.

4. A wiring board comprising:
the coaxial connector according to claim 3 ; and
a wiring board body on which the coaxial connector is mounted, wherein
the wiring board body includes:
a first wiring pattern with which the second contact piece of the signal terminal is in contact; and
a second wiring pattern with which a fourth contact piece of the ground terminal is in contact.

5. An electronic component testing apparatus that tests a DUT, the apparatus comprising:
the wiring board according to claim 4 .

Assignees

• Advantest Corp
• Molex Llc

Inventors

• Seshimo Takahito
• Shibuya Atsunori
• Arai Masayuki
• Oyama Masataka
• Akiyama Shigeru
• Matsumoto Ayako

Classifications

• H05K1/181

  associated with surface mounted components · CPC title

• G01R1/0416

  Connectors, terminals (G01R1/0425 and G01R1/0433 take precedence; with measurement function for battery poles G01R31/364) · CPC title

• H01R13/6477 Primary

  by variation of dielectric properties · CPC title

• H01R24/50

  mounted on a PCB [Printed Circuit Board] · CPC title

• H01R12/716

  Coupling device provided on the PCB · CPC title