Abstract:
A surface mount electrical component comprising a first soldering interface having a fist soldering interface total solder path length of sufficient length such that a first melted solder fillet substantially disposed along the first soldering interface total solder path length produces an first upward moment greater than a first downward moment produced by the weight of the surface mount electrical component about the first soldering interface, and a second soldering interface comprising a second soldering interface total solder path length such that a surface tension produced by a second melted solder fillet substantially disposed along the second soldering interface total solder path length produces a second upward moment greater than a second downward moment produced by the weight of the surface mount electrical component about the second soldering interface is disclosed.
Abstract:
A semiconductor memory module having a reverse mounted chip resistor, and a method of fabricating the same are provided. By reverse mounting the chip resistor on the semiconductor memory module, the resistive material is protected, thereby preventing open circuits caused by damage to the resistive material. Also, a chip-resistor connection pad of a module substrate is formed to extend higher from the module substrate than other connection pads connected to other elements. Thus, the resistive material of the chip resistor does not contact the module substrate, thereby preventing poor alignment and defective connections.
Abstract:
An electronic device with enhanced heat spread. A printed circuit board is disposed in a casing and includes a first metal ground layer, a second metal ground layer, and a metal connecting portion. The first metal ground layer is opposite the second metal ground layer. The metal connecting portion is connected between the first and second metal ground layers. The second metal ground layer is connected to the casing. A chip is electrically connected to the printed circuit board and includes a die and a heat-conducting portion connected to the die and soldered with the first metal ground layer. Heat generated by the chip is conducted to the casing through the heat-conducting portion, first metal ground layer, metal connecting portion, and second metal ground layer.
Abstract:
A circuit module includes a multilayer wiring board having a cavity portion and an interposer on which a chip part is mounted. The interposer is bonded to the multilayer wiring board so that the chip part is disposed in the cavity portion and the cavity portion is hermetically sealed. In the manufacturing process for the circuit module, a continuity test of the chip part is conducted by applying a testing voltage to the interposer before the interposer is bonded to the multilayer wiring board.
Abstract:
Provided are a semiconductor package having connection terminals whose side surfaces are exposed and a semiconductor module including such a semiconductor package. Also provided are methods of fabricating the semiconductor package and semiconductor module. According to an embodiment of the present invention, a semiconductor package includes a semiconductor chip including a semiconductor wafer having first and second opposite surfaces and a plurality of conductive pads arranged in a row on the first surface along the edges of the semiconductor wafer such that a side surface of each conductive pad is exposed. An insulating layer is formed on the first surface of the semiconductor wafer and includes openings for exposing parts of the conductive pads. A plurality of connection terminals are respectively arranged on the conductive pads exposed through the openings and a reinforcing member is arranged on the insulating layer to cover a portion of each connection terminal.
Abstract:
A multilayer electronic component including a resin layer disposed on a mounting board side is mounted on a mounting board, and has a structure such that, even when deformation, such as deflection and strain, occurs, a stress on the multilayer electronic component is relieved. In the multilayer electronic component, ends of columnar conductors protrude from a main surface of a resin layer facing the outside. The multilayer electronic component is mounted on a mounting board, and the ends of the columnar conductors are electrically connected to conductive lands. In this case, a predetermined gap is formed between the multilayer electronic component and the mounting board.
Abstract:
A wired circuit board includes a metal supporting layer, an insulating layer formed on the metal supporting layer and a conductive pattern formed on the insulating layer, and having a terminal portion for connecting to an external terminal. The terminal portion is disposed at an end portion of the conductive pattern, supported on the insulating layer, and exposed from the metal supporting layer to have an end surface thereof used as a point of contact with the external terminal.
Abstract:
A circuit board has, jointed together with adhesive, a single-layer flexible PCB having a through hole formed therein in the thickness direction and a rigid member having copper foil formed on one side of an insulating base member. A conductive pattern on the single-layer flexible PCB and the copper foil are electrically connected together via solder filling the through hole. Thus, with a low-cost circuit board, unnecessary electromagnetic emissions can be effectively reduced.
Abstract:
A contact of a component is electrically connected to an associated contact of an electrical circuit, typically formed on a substrate, by depositing material between the contacts, the material forming or being processed to form an electrical connection between the contacts. The invention also provides apparatus for this purpose and a resulting circuit.
Abstract:
A package for integrated circuits is described. The package has a package substrate with a land side and an opposite die side, a first set of low level signal connectors on the die side to connect to an IC to be carried by the package, and a second set of low level signal connectors on the die side to connect to external components. The package may have power connectors on the land side or a power supply attached to the land side. A heat spreader or cooler may be attached to the die side.