Abstract: An IC socket includes a socket body with a plurality of contacts disposed therein, a cover rotatablely coupled to the socket body and at least one slider in the socket body. The socket body defines a receiving space for receiving an IC package, and the cover has a driving member. The slider has one end engageable with the driving member and the other end extending toward the receiving space. When the IC socket is in a close position, the slider touches the IC package or close to the IC package to keep a reliable connection between the IC socket and the IC package.

Abstract: An electric connector provided with a plurality of connecting elements which electrically connect a first electrode group and a second electrode group opposite between two devices, wherein (a) first contact points in contact with electrodes of the first electrode group of the connecting elements correspond to intersection points on an a×b where a and b correspond to pitch size, and (b) second contact points in contact with electrodes of the second electrode group of the connecting elements form at least two groups.

Abstract: An electrical connector is for electrically connecting an electronic package with a circuit substrate. The connector includes a housing having a plurality of conductive terminals, a fastening device including a load plate for pressing the electronic package and a retaining member for securing the load plate. The load plate defines a first edge, a second edge opposite to the first edge, a third edge pivoted to the fastening device and a forth edge adjacent to the first edge and the second edge. The four edges jointly define an opening in the middle thereof with the first and second edges each having a pressing portion. Comers of the opening near the third edge extend upwardly. During the rotation of the load plate, the pressing portions will abut against the electronic package prior to the corners near the third edge, and thereby prevent the corners from abutting against the electronic package.

Abstract: An electrical connector is for electrically connecting an electronic package with a circuit substrate. The connector includes a housing with a plurality of conductive terminals received therein, a fastening device for securing the electronic package. The fastening device includes a pressing member for pressing and securing the electronic package and a retaining member for securing the pressing member. At least one of the pressing member, the retaining member are produced from ferrite stainless steel material, and has a layer of high temperature resistant organic thin film thereon.

Abstract: A socket connector for electrically connecting an IC package and a printed circuit board, includes a housing receiving a number of contacts, a stiffener surrounding the housing, a cover pivotably mounted at an end of the stiffener to cover the housing and a lever pivotably mounted at an opposed end of the stiffener to retain the cover to the stiffener, a number of washers mounting to the stiffener and a number of screws for mounting the stiffener to the printed circuit board. The washer has a pinhole and a number of teeth upwardly extending along a circle circumference of the pinhole. The screw is hold to the washer by the teeth of the washer before the screw engaged with the printed circuit board.

Abstract: An electrical connector assembly comprises a carrier and an electrical connector with an insulative housing. The carrier has a base and a plurality of sidewalls extending downward from peripheral of the base and jointly defining a cavity. The carrier includes a plurality of claws and release sections associate with the claws. An electrical connector is received in the cavity and has alignment pins assembled to the electrical connector and engaged with the claws. Each alignment pin disengaged from the claw by the release section.

Abstract: A burn-in socket for receiving an IC package comprises a socket body, a plurality of contacts mounted in the socket body and an actuator movably mounted upon the socket body. Each contact in the socket body includes a pair of clipping arms with tip portions at free ends thereof respectively. Solder balls attached to the bottom of the IC package are respectively clipped between the pair of the tip portions and thus the IC package should be brought into electrical contact with the contacts of the burn-in socket. The tip portion is plated with a Pd—Co layer for reducing the attachment of the Sn and preventing the impedance of the contacts to increase. Meanwhile, the IC package can be sucked up successfully without absorption from the contacts of the burn-in socket.

Abstract: An electrical connector assembly comprises a stiffener including a base with a first portion and a second portion, insulative housing, a load plate and a lever. An embossed portion is formed on the base and has substantial distance to a first end of the first portion. An insulative housing is disposed between the first portion and the second portion. A load plate is pivotally mounted on the second portion of the stiffener. A lever is pivotally assembled to the first portion of the stiffener to lock the load plate and includes a retaining portion adjacent to the embossed portion to abut against the lever when it is rotated.

Abstract: A chip holding apparatus includes a holding block disposed above a circuit board that is formed with a plurality of sockets for holding chips respectively. Each of the sockets is formed with a retainer for securely holding the chip. The chip holding apparatus further includes a lift assembly coupled operably to the holding block. The holding block is formed with a plurality of openings. The lift assembly moves the holding block to a lower position, in which, the holding block presses and disengages the retainers from the sockets in order to permit insertion of the plurality of chips into the sockets via the openings in the holding block, and an upper position above the lower position, in which, the retainers retrieve to its normal condition, thereby retaining the chips securely within the sockets, respectively.

Abstract: A card connector has: a connector housing which is formed therein so as to be enclosed on three sides by an opposed pair of first and second frames and a third frame that links the end portions of the first and second frames; and an open-close cover. The open-close cover has a sensing member that senses the installation status of the card, and a cover locking mechanism that latches onto either the first or the second frame and locks the open-close cover in the closed state. The rear of the open-close cover is rotatably pivoted on the first and second frames. The card's installation status is sensed by closing the open-close cover and positioning the sensing member at the rear end portion of the card; and the open-close cover is retracted, being thereby locked in the closed state via the cover locking mechanism.

Abstract: A burn-in socket for receiving an IC package (2) is provided. The burn-in socket includes a socket body with a plurality of contacts (7) disposed therein and a cover (6) rotatablely coupled to the socket body. The socket body defines a receiving space (500) for receiving the IC package (2) to be tested therein. The cover (6) has a pushing portion (611) capable of pressing on the IC package (2) toward the socket body when the cover (6) is turned to a closed position. At least one pair of pick-up arrangements (8) are provided around the pushing portion (611) for automatic pick-up of the IC package (2).

Abstract: A card connector has: a connector housing 2 constituted of electrically insulating bodies in which is formed a bottomed card holding cavity that is open at the front and top and is enclosed on three sides by a pair of first and frames and by a third frame that links one pair of end portions of the first and second frames; contact terminals 5 and 6 deployed inside the connector housing's card holding cavity; and an open-close cover 3 that covers the openings of the connector housing's card holding cavity. The rear of the open-close cover is rotatably pivoted on the first and second frames. Thanks to such structure, the interior of the card holding cavity can be examined when a card is installed, so that a card connector is provided in which cards of differing size and thickness, etc., can be installed reliably and in a simple manner.

Abstract: A force distributor is configured for disposition between a printed circuit board and a stiffening plate, which is spaced from the printed circuit board. The force distributor is configured to distribute a compressive force between the printed circuit board, an interposer and a land grid array module carried on a side of the printed circuit board opposite the stiffening plate. The force distributor comprises a spring element comprising a first portion and a second portion with the first portion extending radially outward from the second portion. The spring element is configured for placement so that the first portion is secured to the stiffening plate and the second portion is biased in unsecured, pressing contact against the printed circuit board.

Abstract: A socket connector (1) for electrically connecting an integrated circuit package to a printed circuit board comprises a stiffener (3) including a base plate, an opening defined in a approximate central area of the base plate, a plurality of grooves (30) defined in the base plate and not communicated with the opening, an socket body (2) assembled in the opening of the stiffener, a plurality of latches (22) extending from the socket body and received in the grooves of the base plate, the edge of the socket body distant to the edge of the opening of the stiffener, a plurality of terminals received in the socket body.

Abstract: A land grid array socket comprises an insulative housing having a plurality of contacts. The insulative housing has a top surface for receiving a land grid array package. A cover member is pivotally mounted on a first end of the insulative housing. The cover member is pivotal between an open position and a closed position where the cover member presses the land grid array package toward the top surface of the insulative housing so that the land grid array package electrically connects to the contacts. A lever is pivotally mounted on a second end of the insulative housing. The lever has a locking portion for locking the cover member in the closed position. A metallic reinforcing plate is positioned on a bottom surface of the housing. The metallic reinforcing plate extends between the first end and the second end of the insulative housing.

Abstract: Disclosed is a socket assembly for electrically engaging an Integrated Circuit (IC) package with a printed circuit board. The socket assembly includes a socket body and a Pick-and-Place (PnP) cap. The socket body is mounted on the printed circuit board. Further, the PnP cap is capable of detachably mounting on the socket body. An upper surface of the PnP cap includes a raised portion with multiple chamfered portions projecting out from the raised portion. The multiple chamfered portions enable easier detachment of the PnP cap from the socket body.

Abstract: An electrical card connector (100) for receiving a card comprises an insulating housing (1), a shield (2) having an end mounted on the insulating housing and another end defining an inserting opening for the card inserting, and an ejector (4) assembled on a lateral side of the shield. The ejector comprises a ejecting mechanism for ejecting the card, and a pushing mechanism connecting with the ejecting mechanism. The pushing mechanism comprises a plastic pushing bar (43), a base (42) mating with the pushing bar, a slider (44) received in the pushing bar and the base, a spring member (46) mounted on the pushing bar, and a metal piece (430) assembled on the pushing bar.

Abstract: Disclosed is a socket assembly comprising a retention mechanism, a circuit board, an IC socket, a heat sink unit and a loading mechanism. The retention mechanism includes a support plate, on which the circuit board, the IC socket comprising die and package, and the heat sink unit are stacked respectively. The retention mechanism further includes a plurality of standoffs perpendicular to the support plate and include a pair of latches at different heights. The loading mechanism includes a loading plate configured on end portions of the standoffs and a pair of downwardly extending clips that are capable of engaging to the latches on the both standoffs. Correspondingly, the circuit board, the IC socket and the heat sink unit are sandwiched between the loading plate and the support plate. The heights of the pair of latches on the standoffs are based on the die and package in the IC socket.

Abstract: A socket connector that is capable of supporting and blocking a chip module therein includes an insulating body, a plurality of conductive terminals and a plate-like blocking frame. The conductive terminals are provided in the insulating body. Four sides of the plate-like blocking frame enclose to form an accommodating space. The rear portion of the plate-like blocking frame is pivotally connected to the rear portion of the insulating body. The front portion of the plate-like blocking frame is locked to the front portion of the insulating body. Two adjacent sides of the plate-like blocking frame extend respectively to form a piece body having an abutting portion. The abutting portion extends into the accommodating space, so that the chip module can be pushed in position accurately to obtain a good electrical connection with the socket connector.

Abstract: A connector includes a base, at least one first terminal, an upper cover, and a sliding structure. The base includes two opposite sides for defining the receiving space. The first terminal includes a contact end and a fixed end, wherein the contact end is disposed in the receiving space and the fixed end extends outside the receiving space. The upper cover includes two opposite edges. The sliding structure is disposed on the two opposite sides of the base that correspond to the two opposite edges of the upper cover. In this sliding structure, the two opposite edges are able to slide along the two opposite sides.

Abstract: An electrical connector (1) comprises a housing (1) fixed on a PCB, a metal cover (40) pivotally mounted to the housing (10), and a lever (50) attached to the housing (10). The housing (10) defines a plurality of passageways receiving a plurality of terminals (20) therein. The cover (40) defines a first side (401) with a tongue portion (4010), a second side (402) opposite to the first side (401) and a third side (403) and a fourth side (404) opposite to the third side (401) connecting the first side (401) and the second side (402). The third and the fourth side (401, 402) define as an arched configuration and project toward the housing, and the first and the second sides (403, 404) define at least one projection (405) respectively.

Abstract: A terminal structure to be assembled in a terminal slot is integrally formed by pressing a metal plate having first and second surfaces. The terminal structure includes a fixing portion and an elastic arm. The first surface of the fixing portion is fixed in the slot and is wider. The arm is connected to the fixing portion. Over 70% of the first surface of the arm are disposed on the same plane and the first surface of the arm has a curved shape. The first surface of the arm is narrower than the first surface of the fixing portion. An angle smaller than 30 degrees is formed between the first surfaces of the arm and the fixing portion. A top end of the arm exceeds a top end of the fixing portion, and is formed with a movable contact.

Abstract: An LGA connector (100) adapted for receiving an electronic package (10), includes a housing (2) and a number of contacts received in the housing, a stiffener (3) enclosing the housing, a cover (5) pivotable between an open position and a closed position, and a lever (4) adapted for retaining the cover. The cover includes a pair of opposite first edges (53) each having a pair of resisting beams (531) extending toward opposite directions and projecting toward the housing. The resisting beams resiliently resist against the electronic package when the cover is rotated to the closed position.

Abstract: A mounting device for a heat sink includes a basis and a pair of operating bodies. Two pair of supporting members are provided on opposite sides of the basis. The operating body includes a pole connecting the supporting members, a pivot member pivotably attached to the pole, and at least a spring member encircling the pole. The pivot member includes a pressing portion adapted for pressing the heat sink. One end of the spring member is fixed on one of the supporting members, and the other end of the spring member is secured with the pivot member. The pivot member is pivotable from a first position to a second position under action of a force and returns back to the first position from the second position under action of the spring member after withdrawing the force.

Abstract: A land grid array connector (100) has a stiffener defining a window (305) thereon, a metal clip (40) pivotably coupling with stiffener, a lever (50) engaging on the stiffener, a housing (10) received in the window of the stiffener and a number of contacts mounted to the housing. The lever includes a pair of locating portions (501) and an offset actuating portion (503) disposed between the locating portions. The clip includes a projecting portion (400) having a depress portion (405) for receiving the offset actuating portion of the lever, a protruding portion (406) bending upwardly and inwardly from an end of the depress portion and a pair of guiding portions (4060) extending outwardly from the protruding portion for resisting against opposite ends of the offset actuating portion.

Abstract: An electrical connector (1) for electrically connecting an electrical chip to a printed circuit board includes a base (3), a number of contacts, a stiffener (4) partially surrounding the base, a metal clip (5) pivotally assembled to one end of the stiffener, and a lever (6) pivotally assembled to opposite the other end of the stiffener. The base has a number of contact receiving passageways, and includes a mounting surface (314) for arranging the electrical chip and opposite connecting surface (315) for positioning to the printed circuit board. The contacts are received in the contact receiving passageways of the main body. The base defines a plurality of through slots (310) extending from mounting surface to the connecting surface thereof for transferring heat produced by the electrical chip outwardly.

Abstract: An electrical connector assembly (100) is provided for connecting a heat sink thereto and has a housing (3), a number of contacts mounted into the housing, a stiffener (2), a clip (4) covering the housing and a lever (5). The stiffener includes a top plate (21) defining a number of mounting holes (252) thereon and a window (212) defined in a centre of the top plate. The electrical connector assembly further has a number of connecting portions (6) interfering with the inner surface of the mounting holes for connecting the heat sink to the stiffener.

Abstract: Techniques for a land grid array (LGA) socket loaded mechanism for mobile platforms are described. An apparatus includes a LGA socket mounted to a printed circuit board, and a LGA package seated in the LGA socket. The LGA package includes an LGA package substrate and a semiconductor die mounted on the LGA package substrate, and a heat pipe attached to the semiconductor die, wherein the heat pipe is to apply a compressive load to the semiconductor die. The heat pipe includes at least two leaf springs to apply a compressive load to the LGA package substrate. Other embodiments are described and claimed.

Abstract: The present invention provides an electrical connector for establishing electrical connection between an IC module and a PCB. The electrical connector comprises an insulative housing and a set of electrical contacts received in the housing. The insullative housing has a mating surface and a mounting surface opposite thereto. The mating surface defines a supporting block extending upwardly thereof for supporting an IC module when said IC module is mated with the electrical connector. A reinforced element is defined in the supporting block, so as to reinforce said supporting block.

Abstract: An electrical connector is used for connecting a chip module to a circuit board, and includes an insulating body, conducting pins, a rod, and a fastening device. The rod includes a pressing rod, and fastening portions. The pressing rod has a pressing portion for pressing the chip module. The fastening portions are located at two ends of the rod. The fastening device includes a back plate, and a fastening hook that is located on the back plate. The fastening portion of the rod is wedged to the fastening hook of the fastening device. Thereby, the chip module is firmly fastening in the insulating body. The assembling process is easy. Furthermore, because both ends of the rod have the fastening portions, the electrical connector can achieve the same effect, without the enhancing flake, the pressing board and the moving part. Its structure is simple, and the manufacturing cost is low.

Abstract: An electrical connector (1) includes a housing (10), a number of electrical contacts (20) received in the housing (10) and an actuator (30) mounted on the housing (10). In addition, the electrical connector (1) further a cover (40) disposed between the actuator (30) and the housing (10). The cover (40) is mounted above the housing (10) and the actuator (30) is pivotally disposed relative to the cover (40).

Abstract: An electrical connector assembly (1) comprises a housing (10), an operating member (11), a cover (12) pivotally engaged in one side of the housing (10), a shaft (14) for connecting the cover (12) to the housing (10) and a plurality of terminals (13). The operating member (11) defines a number of receiving holes (110), and the housing (10) defines a plurality of passageways (100) corresponding to the receiving holes (110). The terminal (13) comprises a contact engaging portion (131) received in the housing (10) for contacting with the chip module (2), an retaining portion (132) received in the received hole (110), a tail (1) connecting to the printed circuit board and a neck portion (134) connecting the retaining portion (132) and the contact engaging portion (131). The operating member (11) is floatably supported by a first projection (1341) formed on the first connecting portion (134).

Abstract: A socket for electrically connection an electronic package to a circuit board, comprises: a socket body (10) receiving a number of terminals; a floating board (11) located upon the socket body; a cover (12) rotatablely assembled to the socked body, the cover formed with at least a position portion; a pressure board (13) correspondingly formed with at least one clasp for latching with the position portion of the cover to retain the pressure board to the cover.

Abstract: A purpose of the invention is to provide a socket and a socket base, capable of holding the retainers outside the viewing field of the camera in spite of the size and/or shape of the retainers when measuring contact gaps, for example.

Abstract: An burn-in socket used for connecting an IC package includes an base, a actuated device floatably assembled on said base, a frame retained on said base, a plurality of contacts received in said base and a switch member rotatable assembled on said base. Said actuated device includes a plurality of sustaining shafts with a plurality of rollers ringed thereon. Said switch member includes a plurality of rotating shafts retained on said base and a plurality of latching members engaged with said rotating shafts and rotating between an open position and a locking position. Said rollers of sustaining shafts moveable engaged with said latching member, which lowers the abrasion while the latching members are rotating between said open position and said locking position around said rotating shafts.

Abstract: An electrical connector assembly (100) is provided for connecting a heat sink thereto and has a housing (3), a number of contacts mounted into the housing, a stiffener (2), a clip (4) covering the housing and a lever (5). The stiffener includes a top plate (21) defining a number of mounting holes (252) thereon and a window (212) defined in a centre of the top plate. The electrical connector assembly further has a number of connecting portions (6) interfering with the inner surface of the mounting holes for connecting the heat sink to the stiffener.

Abstract: A socket connector for connecting an IC package to a printed circuit board (PCB) comprises an insulating base (11) arranged a plurality of conductive terminals therein, a cover (13) assembled on the base (11) and a driver device actuating the cover to slide relative to the insulating base. The driver device comprises a first retaining member (15) fixed in the cover (13), a whirling member (16) engaged with the base (11) and a driver member (14) connecting with the first retaining member (15) and the whirling member (16). The first retaining member (15) and the whirling member (16) are pivotally attached with each other by a holding portion (154) formed on one of them, and the holding portion has an arc surface.

Abstract: An IC socket for receiving an IC package includes a socket body with a plurality of contacts disposed therein, a lid mounted on the socket body and movable relative to the socket body in an up-down direction, and a pressing mechanism driven by the lid. The pressing mechanism has a pusher able to apply a substantial balanced force to the IC package, and thus any distortion of the IC package will be prevented effectively.

Abstract: An IC socket includes a socket body with a plurality of contacts disposed therein, a cover rotatablely coupled to the socket body and at least one slider in the socket body. The socket body defines a receiving space for receiving an IC package, and the cover has a driving member. The slider has one end engageable with the driving member and the other end extending toward the receiving space. When the IC socket is in a close position, the slider touches the IC package or close to the IC package to keep a reliable connection between the IC socket and the IC package.

Abstract: An electrical connector that connects a chip module to a printed circuit board is proposed. The electrical connector comprises an insulator and a strengthening member disposed outside of the insulator. The strengthening member contains a sidewall for positioning the insulator and a location member bending and extending out of the sidewall. A plurality of positioning holes matching with a plurality of locking members are disposed on the location member to attach the strengthening member on the printed circuit board. The electrical connector electrically connects between the chip module and the printed circuit board without a bottom base or the lever of a LGA socket by forming a connection between the chip module, the insulator, and the printed circuit board through only the strengthening member. Due to its less complicated structure the present invention lowers production costs and increases the market competitiveness of products that utilize the device.

Abstract: In one embodiment, the present invention includes a load frame to be affixed to a primary surface of a circuit board adjacent to a socket, a load plate having a proximal portion rotatably adapted to the load frame and a distal portion having a tongue member to be locked by a shoulder member adapted to the circuit board on a side of the socket opposite to the frame, and a load lever to mate the load plate to the load frame, where the load lever is rotatable from an open position to an engaged position to lock the tongue member of the load plate under a head of the shoulder member. Other embodiments are described and claimed.

Abstract: An electrical connector (1) comprises an insulative housing (4), a stiffener (6) defined around the housing (4), a clip (7) pivotably engaged on one end of the stiffener (6), and a lever (8) engaged on an opposite end of the stiffener (6) for fastening the clip (7) onto the housing (4). The housing (4) comprises an upper surface (44) and a lower surface (45) opposite to the upper surface (44) and a platform surface (47) projected between the upper surface (44) and the lower surface (45) and a planar sidewall (40) surrounded thereof. The sidewall (1) comprises an upper section (42) and a lower section (48) that is the circumference of the upper sidewall (42) is longer than that of the lower sidewall (48).

Abstract: A land grid array socket (12) includes a dielectric housing (30) and a number of conductive terminals (40) secured thereto. A stiffener (50) having a pair of transverse flanges (504, 508) and a pair of discrete longitudinal sidewall (506) is disposed around the housing. A load plate (60) is pivotally attached to one of the flange for downwardly pressing a land grid array package seated on the terminals toward the housing. A lever (70) is moveably coupled to the other flange for locking the load plate in position.

Abstract: A socket connector assembly (10) comprises an insulative housing (10) comprising a bottom conductive section (201) defining a plurality of contact-receiving slots and four sidewalls (202) extending upwardly from edges of the conductive section, and a pick-up cap (30) assembled to the insulative housing and comprising a smooth top surface (301) adapted for being sucked by a vacuum device and opposite contacting surface (302). At least one of the sidewalls of the insulative housing and the pick-up cap defines at least a pair of aligning posts (303) at opposite corners thereof, and at least one of the pick-up cap and the sidewalls of the insulative housing defines a pair of aligning slots (203) at opposite corners thereof to interferentially receive the aligning posts to assemble the pick-up cap to the insulative housing.

Abstract: A land grid array socket and a microelectronic assembly including the socket. The socket comprises: a housing; an array of through-contacts on the housing; a solder ball standoff element on a PCB side of the housing; and a seating plane standoff element on a package side of the housing, the seating plane standoff element being aligned with the solder ball standoff element to form a loading force support element therewith.

Abstract: Disclosed is a socket assembly for electrically engaging an IC package with a PCB. The socket assembly includes a socket body, a loading mechanism, and a pick-and-place (PnP) cap. The socket body engages the IC package with the PCB. The loading mechanism includes a loading plate having a central opening and capable of being mounted on the socket body when the loading plate is in a closed position. The PnP cap includes a first plurality of latches configured on a plurality of peripheral edges of the PnP cap and a raised portion configured on an upper surface of the PnP cap. The first plurality of latches engages the PnP cap with the socket body when the PnP cap is in a first position. The second plurality of latches detachably engages the PnP cap with the central opening of the loading plate when the PnP cap is in a second position.

Abstract: An IC socket connector comprises a base and perimeter walls with corresponding inner sidewalls and outer sidewalls to form an inner cavity therebetween for receiving an IC package. An inner sidewall of the perimeter walls has a push arm at least which has an interfacing part between an inclined lead-in surface and a flat surface at the terminal end of the push arm. The distance from the interfacing part to the contact area is larger than the one from the corresponding inner sidewall to the contact area.

Abstract: An electrical connector includes a dielectric housing having a lower base body that cooperates with an upper mounting body to confine a heat-dissipating space therebetween, and at least one opening in fluid communication with the heat-dissipating space. Conductive terminals extend through first through holes in the upper mounting body and second through holes in the lower base body, and have first contact portions that extend upwardly and outwardly of the upper mounting body to contact an electronic element mounted on the upper mounting body, and second contact portions that extend downwardly and outwardly of the lower base body. An anchoring unit is operable so as to anchor the electronic element to the upper mounting body.

Abstract: An electric connector having an insulating body, a plurality of terminals received in the insulating body and a press unit pressing a chip module. The press unit has at least one elastic arm. The elastic arm has a driving portion. At least one limiting body is formed on the insulating body. When the driving portion is driven, the limiting body serves to limit the elastic arm not to over-deform.

Abstract: An LGA connector (100) adapted for receiving an electronic package (10), includes a housing (2) and a number of contacts received in the housing, a stiffener (3) enclosing the housing, a cover (5) pivotable between an open position and a closed position, and a lever (4) adapted for retaining the cover. The cover includes a pair of opposite first edges (53) each having a pair of resisting beams (531) extending toward opposite directions and projecting toward the housing. The resisting beams resiliently resist against the electronic package when the cover is rotated to the closed position.