Contact of electrical connector

Details Contact of electrical connector Contact of electrical connector

2000-03-01

2001-08-21

Paumen, Gary F. (Department: 2833)

Electrical connectors

Metallic connector or contact having movable or resilient...

Spring actuated or resilient securing part

Reexamination Certificate

active

06276973

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to a contact of an electrical connector, and in particular to a contact of a socket connector for retaining a semiconductor device, such as a central processing unit (CPU) module on a circuit board.
2. The Prior Art
Socket connectors for retaining and electrically connecting a CPU module to a circuit board are known in the art. A socket connector comprises an insulative housing defining an array of bore therein for receiving and retaining conductive contacts. Each contact has a body portion from which a tail and a mating section extend in opposite directions. The body forms an electrical channel between the mating section and the tail. The tail extends beyond a lower face of the housing for being received in a corresponding pin opening defined in the circuit board. The mating section engages with a corresponding conductive terminal extending from the CPU module to establish electrical connection between the CPU module and the circuit.
With the increase of the operational frequency of CPUs, the contacts of the socket connector are subject to severe requirement in electrical properties, among which impedance, especially inductance, of the contact is one of the major problems to be addressed. The body of he contacts of the conventional socket connectors, such as those disclosed in the above mentioned prior art, forms a single signal transmission channel having a limited cross-sectional area thereby leading to difficulty in reducing inductance.
It is thus desired to provide a contact structure which overcomes the above problem encountered in high frequency operation of the CPUs.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a contact for a socket connector having reduced impedance.
Another object of the present invention is to provide a contact for a socket connector having an increased cross-sectional area for reducing the inductance thereof.
A further object of the present invention is to provide a contact for a socket connector having a body forming at least two spaced signal transmission channels thereby effectively increasing the cross-sectional area thereof and reducing the inductance.
To achieve the above objects, a contact of a socket connector in accordance with the present invention comprises an upper section for engaging a pin of a central processing unit module, a lower section retained in a bore defined in a housing of the connector with a tail section extending therefrom for being electrically connected to a circuit board and a plurality of spaced connecting sections, serving as signal transmission channels, arranged between the upper and lower sections and electrically connected thereto to serve as electrical current channels. By increasing the number of the connecting sections, the total cross-sectional area of the electrical channels is increased which effectively reduces the inductance thereof.


REFERENCES:
patent: 6086401 (2000-07-01), Hsiung et al.

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