Abstract:
Improved printed circuit boards (PCBs), printed circuit board assemblies (PCBAs) and methods thereof contemplate PCBs with recesses incorporated into planar surfaces thereof adapted to receive respective elongate leads of circuit components. The recesses are sized so as to prevent distal ends of the leads from emerging through the far sides of the boards and, indeed, allow for positioning of the component flush with, or offset above, the board to which they are mounted.
Abstract:
A system includes a first electrical device including a conductive structure, and a second electrical device including an opening and a conductor provided in the opening. The conductor contacts the conductive structure of the first electrical device to electrically interconnect the first electrical device to the second electrical device.
Abstract:
A high speed socket includes an insulative housing and a printed circuit board body portion. The PCB body portion includes a PCB and surface mount contacts. Each surface mount contact has a first end portion for making contact with an integrated circuit held in the socket and a second end portion for surface mounting to a printed circuit board. The socket's printed circuit board includes AC grounded conductive columns (ACGCC) that extend from a first planar surface of the PCB to a second planar surface of the PCB. The printed circuit board also includes signal conductors. The signal conductors are shielded by the ACGCCs. In one aspect, the socket includes capacitors that are surface mounted to the socket's PCB. In another aspect, the surface mount contacts include self-adjusting solder tails that accommodate PCB warpage.
Abstract:
A capacitive interposer, electronic package having the capacitive interposer and electronic device with the electronic package is described. The interposer has a first planar face and a second planar face. An array of upper connections is on the first planar face and opposing lower connections are on the second planar face with conduction paths between each upper connection of the upper connections and a lower connection of the lower connections. At least one capacitor is provided. The capacitor has a plurality of parallel plates with a dielectric there between. At least one first external termination is in electrical contact with a first set of alternate parallel plates and at least one second external termination is in electrical contact with a second set of alternate parallel plates. The capacitor is mounted on the first planar face with the first external termination in direct electrical contact with a first upper connection and the second external termination is in direct electrical contact with a second upper connection. At least one upper connection, first external termination and second external termination are arranged for direct electrical contact with element contact pads of a common element.
Abstract:
A method and an apparatus for improving the delivery and filtering of power to a semiconductor device is disclosed by organizing out interconnects (pins, balls, pads or other interconnects) used to carry power in a striped configuration that shortens the conductive path required between a power source and a semiconductor device and that reduces the resistance of that conductive path.
Abstract:
The present invention relates generally to permanent interconnections between electronic devices, such as integrated circuit packages, chips, wafers and printed circuit boards or substrates, or similar electronic devices. More particularly it relates to high-density electronic devices. The invention describes means and methods that can be used to counteract the undesirable effects of thermal cycling, shock and vibrations and severe environment conditions in general. For leaded devices, the leads are oriented to face the thermal center of the devices and the system they interact with. For leadless devices, the mounting elements are treated or prepared to control the migration of solder along the length of the elements, to ensure that those elements retain their desired flexibility.
Abstract:
A depression is formed in a first surface of a printed wiring board. A through hole penetrates through the printed wiring board from the bottom surface of the depression to a second surface of the printed wiring board. The second surface is the opposite surface of the first surface. A terminal of an electronic component is received in the through hole. The terminal has the tip end protruding from the second surface of the printed wiring board. Solder is filled in the through hole. The tip end of the terminal is allowed to protrude from the second surface of the printed wiring board even when the terminal is shorter than the original thickness of the printed wiring board. It is not necessary to change the length of the terminal.
Abstract:
Disclosed are stair stepped PCB structures which provide high performance, direct path, via-less interconnections between various elements of an electronic interconnection structure including, among others, IC packages and connectors.
Abstract:
A pin grid array package, comprising a substrate, a chip mounted abutting said substrate, and a plurality of pins electrically connected to said substrate, each pin comprising a substantially flat disc at an end of the pin opposite the substrate, said disc oriented perpendicular to said pin. The substrate contains metal traces to transfer electrical signals between the chip and each pin, wherein said disc is usable to provide each pin an electrical connection to a structure external to the package.
Abstract:
A sheet capacitor of the invention has a contact portion formed in a through-hole requiring electrical connection with an IC connection pin among the through-holes in which the IC connection pins are inserted, and a capacitor element connected to the contact portion. Another sheet capacitor of the invention includes an insulating board and a capacitor element mounted on the insulating board. The insulating board has a connection land with an IC at the upper side, and a connection land with a printed wiring board at the lower side. The capacitor element and connection lands at the upper and lower side of the insulating board are connected with each other electrically. In any one of these configurations, a capacitor element of large capacity and low ESL is connected closely to the IC, and the mounting area of the peripheral circuits of the IC can be increased.