The method for manufacturing a number of electrical nodes, wherein the method includes providing a number of electronic circuits onto a first substrate, such as on a printed circuit board or other electronics substrate, optionally, a low-temperature co-fired ceramic substrate, wherein each one of the electronic circuits includes a circuit pattern and at least one electronics component in connection with the circuit pattern, wherein the electronic circuits are spaced from each other on the first substrate, thereby defining a blank area surrounding each one of the number of electronic circuits, respectively, and providing potting or casting material to embed each one of the number of electronic circuits in the potting or casting material, and, subsequently, hardening, optionally including curing, the potting or casting material to form a filler material layer of the number of electrical nodes.

An optical module includes a shell, a circuit board and an optical transmitter device. The circuit board is disposed in the shell. The optical transmitter device is disposed in the shell, and includes a plate-shaped substrate and a laser assembly. The laser assembly is disposed on a surface of the substrate, is electrically connected to the circuit board, and is configured to emit an optical signal. The substrate is fixedly connected to an end of the circuit board.

A method for manufacturing a package substrate for mounting a semiconductor device including: a first laminate preparing step of preparing a first laminate including a resin layer, a bonding layer that is provided on at least one surface side of the resin layer and includes peeling means, and a first metal layer provided on the bonding layer; a first wiring forming step of forming a first wiring conductor in the first laminate by etching the first metal layer; a second laminate forming step of forming a second laminate by laminating an insulating resin layer and a second metal layer in this order on a surface of the first laminate, the surface being provided with the first wiring conductor; a second wiring forming step of forming a second wiring conductor on the insulating resin layer by forming a non-through hole in the insulating resin layer.

The casing of an electronic control device includes a casing-side contact surface in contact with the end of a printed-circuit board. A cover includes a cover-side contact surface holding the end of the printed-circuit board together with the casing-side contact surface by being in contact with the end of the printed-circuit board. In the printed-circuit board, a held portion held between the casing-side contact surface and the cover-side contact surface is provided with a through-hole via.

A power electronic substrate includes a metallic baseplate having a first and second surface opposing each other. An electrically insulative layer also has first and second surfaces opposing each other, its first surface coupled to the second surface of the metallic baseplate. A plurality of metallic traces each include first and second surfaces opposing each other, their first surfaces coupled to the second surface of the electrically insulative layer. At least one of the metallic traces has a thickness measured along a direction perpendicular to the second surface of the metallic baseplate that is greater than a thickness of another one of the metallic traces also measured along a direction perpendicular to the second surface of the metallic baseplate. In implementations the electrically insulative layer is an epoxy or a ceramic material. In implementations the metallic traces are copper and are plated with a nickel layer at their second surfaces.

An apparatus which includes: a circuit board having a radiofrequency (RF) structure at a first location thereof, the RF structure formed from a conductive trace of the circuit board; a heat carrier; and a multi-stack cooling structure coupling the circuit board and the heat carrier to each other. The multi-stack cooling structure including a first stack adjacent the RF structure at the first location and a second stack at a second location. The first stack including a dielectric layer adjacent the heat carrier, and a thermal interface material (TIM) that couples the dielectric layer and the circuit board to each other, the dielectric layer having higher thermal conductivity and higher rigidity than the TIM. The second stack including a metal layer adjacent the heat carrier, and the TIM that couples the metal layer and the circuit board to each other.

A method includes attaching a substrate to a carrier, aligning external connectors on a first surface of a first semiconductor package to first conductive pads on a first surface of the substrate facing away from the carrier, and performing a reflow process, where a difference in coefficients of thermal expansion (CTEs) between the substrate and the carrier causes a first shape for the first surface of the substrate during the reflow process, where differences among CTEs of materials of the first semiconductor package causes a second shape for the first surface of the first semiconductor package during the reflow process, and wherein the first shape substantially matches the second shape. The method further includes removing the carrier from the substrate after the reflow process.

A circuit board includes a composite structure layer, at least one conductive structure, a thermally conductive substrate, and a thermal interface material layer. The composite structure layer has a cavity and includes a first structure layer, a second structure layer, and a connecting structure layer. The first structure layer includes at least one first conductive member, and the second structure layer includes at least one second conductive member. The cavity penetrates the first structure layer and the connecting structure layer to expose the second conductive member. The conductive structure at least penetrates the connecting structure layer and is electrically connected to the first conductive member and the second conductive member. The thermal interface material layer is disposed between the composite structure layer and the thermally conductive substrate, and the second structure layer is connected to the thermally conductive substrate through the thermal interface material layer.

A circuit board structure includes a first sub-circuit board, a second sub-circuit board, and a third sub-circuit board. The first sub-circuit board has an upper surface and a lower surface opposite to each other, and includes at least one first conductive through hole. The second sub-circuit board is disposed on the upper surface of the first sub-circuit board and includes at least one second conductive through hole. The third sub-circuit board is disposed on the lower surface of the first sub-circuit board and includes at least one third conductive through hole. At least two of the first conductive through hole, the second conductive through hole, and the third conductive through hole are alternately arranged in an axial direction perpendicular to an extending direction of the first sub-circuit board. The first, second and third sub-circuit boards are electrically connected to one another.

A highly heat-dissipating flexible printed circuit board (GFPCB) efficiently emits heat transferred from a heat source such as an LED to the flexible printed circuit board. The highly heat-dissipating flexible printed circuit board comprises: a flexible board layer which is formed in a flexibly bendable thin-film form by bonding a polyimide (PI) film to the lower side of a copper (Cu) film using an adhesive and has a heat element installed on the upper side thereof; and a heat dissipation layer which is formed in a thin-film form by coating any one of graphitic carbon and a graphite powder binder on the upper side of an aluminum (Al) film and is bonded to the lower side of the flexible board layer using a pressure sensitive adhesive (PSA) to receive heat generated and transferred from the heat element and emit the heat to the outside.