摘要:
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.
摘要:
A multi-level shelf degas station relying on at least two heaters integrated within wafer holding shelves or slots, where the semiconductor wafers do not have direct contact with the heater shelves. The heaters provide conduction heating. In order to degas a wafer, the heater and wafer holder assembly is positioned in a sequential manner through each wafer slot to the next available slot. If a degassed wafer exists in the slot, a transfer chamber arm removes it. A loader arm then places a wafer in the available, empty slot and the stage is moved upwards to receive the wafer from the loader arm. The transfer chamber arm removes an individual wafer from the heater and wafer holder assembly allowing the removed wafer to be individually processed while the other wafers remain in the heater and wafer holder assembly. In some instances, a loader arm may also remove wafers. The remaining wafers in the heater and wafer holder assembly are subjected to further degas treatment while the wafer(s) removed by the transfer chamber arm are exposed to other process steps. Air-cooling chambers are employed to facilitate cooling the wafer slots for ease of removal and maintenance.
摘要:
A cap may be provided over the hinged cover of an integrated circuit socket to be surface mounted to a printed circuit board. The cap may protect the socket prior to the insertion of the integrated circuit. It may also facilitate the surface mounting of the socket to a printed circuit board. It may do so in at least two ways. The cap may facilitate convective heating by the provision of a series of openings in the cap. The cap may also be infrared transmissive so that infrared radiation from a surface mount oven passes through the cap to heat the socket. As a result, in some embodiments, better reflow is achieved and higher solder ball reliability may result.