摘要:
A method of using a coil contact as an electrical interconnect includes inserting at least one coil contact into a dielectric plate or housing. The at least one coil contact includes a beryllium copper coil plated with gold and having a tapered shape such that each end has a diameter smaller than the diameter of a middle section. The housing comprises an upper half comprising a surface that slopes outwardly from a center of the housing towards a top opening, and a lower half comprising a surface that slopes outwardly from the center of the housing to a bottom opening. The sloping surfaces of the upper half and the lower half form a concave shape that captivates the middle section of the coil contact. Each end of the at least one coil contact extends to account for variations in surfaces of the processor and the circuit board.
摘要:
A universal mapping tool and method for mapping workpieces, such as semiconductor devices, is disclosed and described. The tool comprises a fixed and a movable gripping means adapted to mount a wide range of workpieces, means for optically locating the physical center of the workpiece fiducials mounted on the gripping means, and means for interpreting and storing the data obtained in the mapping operation.
摘要:
A micro compliant, test probe interconnect apparatus for an integrated circuit device is disclosed. In an exemplary embodiment, the apparatus includes an elongated housing and a probe pin extending from a first end of the housing. A biasing mechanism holds the probe pin in a normally extended position, wherein the biasing mechanism is formed from a portion of the elongated housing. In a preferred embodiment, the biasing mechanism is a flexible tab, formed from a generally rectangular section of the elongated housing and bent inwardly therein to form a cantilever.
摘要:
Methods and devices are provided for repairing a damaged contact pad that is located on a first surface of a printed circuit board and connected to a via that passes through the circuit board. According to the method, a countersink hole is created in the first surface of the printed circuit board in a location that is substantially centered on an axis passing through the via, and a replacement structure is inserted into the countersink hole. The replacement structure has a stem portion, a head portion, and a shoulder portion that connects the stern and head portions, with the angle of the shoulder portion substantially matching the angle of the shoulder of the countersink hole. The stem portion of the replacement structure is permanently attached to sidewalls of the via so as to electrically couple the head portion of the replacement structure to the via.
摘要:
A system to facilitate analysis of component leads is provided and includes a device to form a picture of the leads, from which an image is extracted, to apportion the image and to perform first and second scans of the portions, and a processor, including a memory unit having a set of computer-readable executable instructions stored thereon, which, when executed, cause the processor to receive data of each scan, to establish a rule, based on the data of the first scan of any one portion, governing when to judge that the data of the second scan of the one portion indicates a defect, to determine rule compliance for each of the second scans, to judge that any one second scan in a non-compliance state indicates a defect, and to report a location of the defect. A display unit displays the report to a user.
摘要:
Methods and devices are provided for repairing a damaged contact pad that is located on a first surface of a printed circuit board and connected to a via that passes through the circuit board. According to the method, a countersink hole is created in the first surface of the printed circuit board in a location that is substantially centered on an axis passing through the via, and a replacement structure is inserted into the countersink hole. The replacement structure has a stem portion, a head portion, and a shoulder portion that connects the stem and head portions, with the angle of the shoulder portion substantially matching the angle of the shoulder of the countersink hole. The stem portion of the replacement structure is permanently attached to sidewalls of the via so as to electrically couple the head portion of the replacement structure to the via.
摘要:
A technique for testing an electronics assembly for a power short circuit is provided. The technique includes pre-characterizing power off resistance of an electronic component(s) of a first packaging level from at least one power boundary of the electronic component(s). The characterizing of the power off resistance occurs prior to placement of the electronic component(s) into an electronics assembly of a higher packaging level. The technique further includes determining actual power off resistance of the electronics component(s) after placement thereof into the electronics assembly, with the actual power off resistance being determined from the at least one power boundary. Thereafter, the actual power off resistance of the electronic component(s) in the electronics assembly is compared with the pre-characterized power off resistance of the at least one electronic component(s), and a determination is made therefrom whether a power short circuit exists within the electronics assembly.
摘要:
Methods and devices are provided for repairing a damaged contact pad that is located on a first surface of a printed circuit board and connected to a via that passes through the circuit board. According to the method, a countersink hole is created in the first surface of the printed circuit board in a location that is substantially centered on an axis passing through the via, and a replacement structure is inserted into the countersink hole. The replacement structure has a stem portion, a head portion, and a shoulder portion that connects the stem and head portions, with the angle of the shoulder portion substantially matching the angle of the shoulder of the countersink hole. The stem portion of the replacement structure is permanently attached to sidewalls of the via so as to electrically couple the head portion of the replacement structure to the via.
摘要:
Methods and devices are provided for repairing a damaged contact pad that is located on a first surface of a printed circuit board and connected to a via that passes through the circuit board. According to the method, a countersink hole is created in the first surface of the printed circuit board in a location that is substantially centered on an axis passing through the via, and a replacement structure is inserted into the countersink hole. The replacement structure has a stem portion, a head portion, and a shoulder portion that connects the stern and head portions, with the angle of the shoulder portion substantially matching the angle of the shoulder of the countersink hole. The stem portion of the replacement structure is permanently attached to sidewalls of the via so as to electrically couple the head portion of the replacement structure to the via.
摘要:
A vacuum holding chuck is presented. The vacuum holding chuck of the present invention is particularly well suited for holding semiconductor wafers of multiple diameters during various testing and manufacturing operations. In an exemplary embodiment, the vacuum chuck comprises a body having a first surface and an opposing second surface, wherein the first surface includes first and second recessed circular platforms to receive wafers having first and second diameters, respectively. The second surface includes at least one recessed circular platform to receive a wafer having a third diameter. Each circular platform is defined at least in part by an annular shoulder and each circular platform further includes a vacuum trough which is connected to a vacuum source which when activated, evacuates the air from the vacuum trough and securely holds a wafer in place within the circular platform.