Abstract: A board-to-board connector includes an insulating body and a conductive terminal. The conductive terminal includes a mounting portion, a first resilient arm and a second resilient arm. The mounting portion includes a main body portion and at least one tab protruding from the main body portion. The first resilient arm includes a first connecting portion, a first elastic arm, a first contact portion, a first extension arm and a first end portion. The second resilient arm includes a second connecting portion, a second elastic arm, a second contact portion, a second extension arm and a second end portion. When the first circuit board and the second circuit board abut against the corresponding first contact portion and the second contact portion, the first extension arm is in contact with the second end portion and/or the second extension arm is in contact with the first end portion.

Abstract: An electrical connector includes an outer shell, an insulating element, and a central conductive terminal. The outer shell includes a mounting hole. The insulating element is installed in the mounting hole. The central conductive terminal includes a first fitting portion, a second fitting portion and an intermediate portion. When a signal is transmitted in the first fitting portion, it encounters an impedance having a first impedance value. When the signal is transmitted in the second fitting portion, it encounters an impedance having a second impedance value. The intermediate portion includes an impedance transition area. When the signal is transmitted in the impedance transition area, it encounters an impedance having a gradually changing third impedance value. The first impedance value, the third impedance value and the second impedance value generally have a smooth transition. An adapter and a test device having the electrical connector are disclosed.

Abstract: A wire-to-board connector includes an insulating body, a number of first conductive terminals, a number of second conductive terminals, a number of first cables and a number of second cables. The first conductive terminals are arranged at intervals along a first direction. The first conductive terminal includes a first elastic mating portion and a first cable connection portion. The second conductive terminal includes a second elastic mating portion and a second cable connection portion. The first cable connection portion and the second cable connection portion are arranged in a misalignment manner along a second direction perpendicular to the first direction. The first elastic mating portion and the second elastic mating portion protrude beyond a first surface of the insulating body so as to abut against metal conductive pads of a circuit board. Besides, a wire-to-board connector assembly having the wire-to-board connector is also disclosed.

Abstract: A cable connector includes an insulating body, a number of cable conductive terminals, a number of cables and a grounding shell. The insulating body extends along a first direction and a second direction. The cable conductive terminals include a number of first cable conductive terminals disposed in a first row and a number of second cable conductive terminals disposed in a second row. Each of the first cable conductive terminals includes a first mating portion and a first mounting portion. Each of the second cable conductive terminals includes a second mating portion and a second mounting portion. The first mounting portions are flush with the second mounting portions. The grounding shell includes a spacer between the first cable conductive terminals and the second cable conductive terminals to improve signal integrity. A connector assembly having the cable connector is also disclosed.

Abstract: An electrical connector includes a built-in circuit board, an insulating member and a shielding shell. The built-in circuit board includes an extension portion. The insulating member is fixed to the built-in circuit board. The insulating member includes an attachment portion. The shielding shell is provided with a mating space. The electrical connector includes a tongue plate extending into the mating space. The tongue plate includes at least the extension portion and the attachment portion. A thickness of the tongue plate includes at least a thickness of the extension portion and a thickness of the attachment portion. By adjusting the thickness of the attachment portion, the tongue plate with a target thickness can be obtained, thereby reducing the requirement on the built-in circuit board. A method of making the electrical connector is also disclosed.

Abstract: An automatic measuring method for measuring connecting lines includes the steps of: S1, loading setting parameters and measuring regulations corresponding to the connecting lines into an automatic measuring apparatus; S2, receiving triggering signals to start measuring; and S3, automatically controlling measuring signals according to the setting parameters to measure multiple pairs of leads of the connecting lines one by one, and then determining whether the quality of the connecting lines is in compliance with standard regulations or not. Besides, an automatic measuring apparatus corresponding to the method is provided as well. The automatic measuring method and the apparatus are suitable for meeting the requirements of product measuring in mass production due to short time and high efficiency.