Abstract: A method of inspecting an extreme ultraviolet (EUV) radiation source includes, in an idle mode, inserting a borescope mounted on a fixture through a first opening into a chamber of the EUV radiation source. The borescope includes a connection cable attached at a first end to a camera. The EUV radiation source includes an excitation laser that generates a light beam that is configured to focus onto tin droplets to generate EUV radiation inside the chamber of the EUV radiation source. The method further includes extending the extendible section, in a direction toward the second opening of the EUV radiation source, to move the camera beyond the blocking shield, and acquiring one or more images from a region beyond the blocking shield. The method also includes analyzing the one or more acquired images to determine an amount of tin debris deposited inside the chamber of the EUV radiation source.

Abstract: A method for using an extreme ultraviolet radiation source is provided. The method includes performing a lithography process using an extreme ultraviolet (EUV) radiation source; after the lithography processes, inserting an extraction tube into a vessel of the EUV radiation source; and cleaning a collector of the EUV radiation source by using the extraction tube.

Abstract: In a method of inspecting an extreme ultraviolet (EUV) radiation source, during an idle mode, a borescope mounted on a fixture is inserted through a first opening into a chamber of the EUV radiation source. The borescope includes a connection cable attached at a first end to a camera. The fixture includes an extendible section mounted from a first side on a lead screw, and the camera of the borescope is mounted on a second side, opposite to the first side, of the extendible section. The extendible section is extended to move the camera inside the chamber of the EUV radiation source. One or more images are acquired by the camera from inside the chamber of the EUV radiation source at one or more viewing positions. The one or more acquired images are analyzed to determine an amount of tin debris deposited inside the chamber of the EUV radiation source.

Abstract: An electrical assembly includes an electrical connector mounted upon a PCB and receiving a CPU therein, and a liquid Nitrogen heat dissipation device is mounted upon the PCB and intimately seated upon the CPU to remove the heat therefrom. The liquid Nitrogen heat dissipation device includes a case forming a chamber to receive the liquid Nitrogen therein. A plurality of fixing arms extend outwardly and radially to fix the liquid Nitrogent heat dissipation device in position. A fixing seat is attached upon the PCB to precisely located the CPU in position with regard to the electrical connector.

Abstract: An electrical connector assembly for connecting the CPU and the printed circuit board, includes an electrical connector and a back plate respectively mounted upon two opposite surfaces of the printed circuit board. A fastening seat partially surrounds the connector for securing a heat sink which is downwardly seated upon the CPU for heat dissipation. The back plate forms a plurality of securing studs extending through the fastening seat. The heat sink further includes a plurality of tubular securing nuts respectively surrounded by the corresponding coil springs and secured to the corresponding securing studs in an adjustable manner so as to impose the downward force upon the heat sink to urge the heat sink to abut downwardly against the CPU for heat dissipation of the CPU.

Abstract: A fastening mechanism for retaining a heat sink upon the CPU includes a fastening seat surrounding the connector, and a pair of fastening clips. The fastening seat includes four alignment posts at four corners, and the pair of fastening clips are attached at two corresponding diagonal corners. Each fastening clip includes a mounting section secured to the corresponding post, a latching section for temporarily holding the heat sink, and a resilient arm for upwardly urging the heat sink. Each alignment post is equipped with a screw nut and a coil spring so as to reinforce the downward pressing forces against the heat sink for assuring reliable connection between the CPU and the contacts of the electrical connector for better electrical transmission and intimate contact between the CPU and the heat sink for efficient heat dissipation.

Abstract: An electrical connector assembly includes an insulative housing, a plurality of contacts retained to the housing, a metallic frame/fastener surrounding the housing, a retainer/clip positioned upon the housing and retaining a CPU thereon. The metallic frame includes four positioning posts at four corners, and the retainer includes a frame part to form a receiving space for receiving the CPU therein, and further includes four metallic retaining supports embedded within four corners of the retainer corresponding to the four positioning posts so as to allow the four positioning posts to extending therethrough in the vertical direction.

Abstract: A securing mechanism for retaining a CPU to an electrical connector mounted upon a top surface of the PCB, includes a fastening device mounted upon the top surface of the PCB beside the electrical connector, and a back plate mounted upon the undersurface of the PCB and located between the PCB and a metallic case. The fastening device cooperates with the back plate to be secured to the PCB via a first set of fixing units. The case forms an opening/recessed region to receive a thickened central region of the back plate and is secured to the back plate via a second set of fixing units surrounding said opening. The thickened central region is fully received within the opening in the vertical direction. The first set of fixing units are located in the central region of the back plate.

Abstract: A fastening mechanism for retaining a heat sink upon the CPU includes a fastening seat surrounding the connector, and a pair of fastening clips. The fastening seat includes four alignment posts at four corners, and the pair of fastening clips are attached at two corresponding diagonal corners.

Abstract: An electrical assembly includes an electrical connector mounted upon the PCB to receive a CPU therein. A securing seat is fixed on the PCB with four upwardly extending posts. A heat sink is secured to the posts by the screw nuts and seated upon the CPU. A auxiliary retention piece is located upon the securing seat around one post so as to prevent the CPU from excessively tilting due to the screw nut fastening occurring on an opposite diagonal corner.

Abstract: An electrical connector assembly includes an insulative housing, a plurality of contacts retained to the housing, a metallic frame/fastener surrounding the housing, a retainer/clip positioned upon the housing and retaining a CPU thereon. The metallic frame includes four positioning posts at four corners, and the retainer includes a frame part to form a receiving space for receiving the CPU therein, and further includes four metallic retaining supports embedded within four corners of the retainer corresponding to the four positioning posts so as to allow the four positioning posts to extending therethrough in the vertical direction.

Abstract: The electrical connector is equipped with a retention mechanism for securing mounting a heat sink upon a CPU which is received within an insulative housing of the connector. The retention mechanism includes a pair of seats, a pair of towers fixed to the pair of seats, respectively, a pressing device retained between the pair of towers in a deformable manner. The pressing device is intimately seated upon the heat sink to significantly press the heat sink against the CPU when the pressing device is deformed in a tensional status.

Abstract: A securing mechanism for retaining a CPU to an electrical connector mounted upon a top surface of the PCB, includes a fastening device mounted upon the top surface of the PCB beside the electrical connector, and a back plate mounted upon the undersurface of the PCB and located between the PCB and a metallic case. The fastening device cooperates with the back plate to be secured to the PCB via a first set of fixing units. The case forms an opening/recessed region to receive a thickened central region of the back plate and is secured to the back plate via a second set of fixing units surrounding said opening. The thickened central region is fully received within the opening in the vertical direction. The first set of fixing units are located in the central region of the back plate.

Abstract: An electrical connector includes an insulative housing and a plurality of contacts retained in the housing, a carrier associated with an electronic package therein to be loaded into the housing, a load plate pivotally mounted by one end of the housing for downwardly abutting against the electronic package for assuring mechanical and electrical connection between the electronic package and the contacts, and a dust cover detachably attached to the carrier during shipping while being removed from the carrier when the electronic package is loaded unto the housing and downwardly pressed by the load plate in a later time.

Abstract: An electrical connector includes an insulative housing retaining a plurality of contacts therein and surrounded by a metallic seat. A clip includes a frame with corresponding four walls to commonly form a receiving cavity to receive the electronic package therein, and each wall forms a pressing section to downwardly press an upward surface of the electronic package. A pair of latches are formed on a lower side of the frame to cooperate with the pressing sections of the walls to retain electronic package within the receiving cavity to be wholly a sub-assembly for being commonly received within the electrical connector. The clip includes a releasing handle to actuate the corresponding latch, and the releasing handle is positioned in an opening of the seat and intimately above the printed circuit board to function as a foolproof mechanism for loading the electronic package in a right orientation.

Abstract: An electrical assembly includes an electrical connector mounted upon a PCB and receiving a CPU therein, and a liquid Nitrogen heat dissipation device is mounted upon the PCB and intimately seated upon the CPU to remove the heat therefrom. The liquid Nitrogen heat dissipation device includes a case forming a chamber to receive the liquid Nitrogen therein. A plurality of fixing arms extend outwardly and radially to fix the liquid Nitrogent heat dissipation device in position.

Abstract: An electrical assembly includes an electrical connector mounted upon the PCB to receive a CPU therein. A securing seat is fixed on the PCB with four upwardly extending posts. A heat sink is secured to the posts by the screw nuts and seated upon the CPU. A auxiliary retention piece is located upon the securing seat around one post so as to prevent the CPU from excessively tilting due to the screw nut fastening occurring on an opposite diagonal corner.

Abstract: The electrical connector includes an insulative housing for receiving the CPU therein with a plurality of contacts retained thereto, a fastener located beside the housing, and a load plate pivotally mounted upon the fastener and covering the housing for holding the CPU in position. The load plate includes opposite first and second sides and opposite first and fourth sides to commonly form a center opening. The first and second sides form first protrusions with corresponding first pressing sections, and the third and fourth sides forms second protrusions with corresponding second pressing sections. During operation, both the first pressing sections and the second pressing sections act upon the CPU.

Abstract: An electrical connector assembly includes an electrical connector and a protective cap assemble thereon. The electrical connector includes an insulative housing forming receiving cavity, and a plurality of contacts disposed in the housing and extending into the receiving cavity. The protective cap includes a planar body, a first latching section linked with the planar body, and an operation section extending above the planar body. A securing seat surrounds the housing and includes a second latching section engaged with the first latching section. By applying fingers upon the operation section to rotate/twist the cap, the first latching section and the second latching section is disengaged from each other, and the cap can be easily upwardly withdrawn from the securing seat.