Land grid array connector with reinforcement stiffener

Details Land grid array connector with reinforcement stiffener Land grid array connector with reinforcement stiffener

2005-12-13

2005-12-13

Ta, Tho D. (Department: 2833)

Electrical connectors

With coupling movement-actuating means or retaining means in...

For dual inline package

Reexamination Certificate

active

06974345

ABSTRACT:
An LGA connector (1) comprises a housing (11) for receiving a number of contacts (12), a stiffener (13) partly covering and reinforcing the housing. The stiffener comprises a pair of lateral sides (130), a front end (131) and a rear end (132), and a central cavity (133) disposed therebetween. The sides, the front end and the rear end each define a bottom wall (134) thereof, thereby around the central cavity. A plurality of separately and uniformly protrusions (135) is formed on a bottom surface of the bottom wall. The protrusion and the bottom wall are integrally formed as a single piece by stamping. Thus, the connector is soldered on a circuit board (3) via solder balls (16, 17) on the contacts and the protrusions, thereby preventing the connector from inclining downwardly during in reflow process because of the connecting force between the connector and the board increased.

REFERENCES:
patent: 4433886 (1984-02-01), Cassarly et al.
patent: 5241453 (1993-08-01), Bright et al.
patent: 5302853 (1994-04-01), Volz et al.
patent: 5485351 (1996-01-01), Hopfer et al.
patent: 2004/0259407 (2004-12-01), Chiang

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