An electronic device may include a housing, a first printed circuit board being disposed in the housing and including a receiving space formed in at least a portion thereof, and a second printed circuit board being stacked (directly or indirectly) on at least a partial area of the first printed circuit board, the second printed circuit board including a first surface including a plurality of pads configured to be electrically connected with the first printed circuit board and a second surface facing in a direction opposite to the first surface. Other various embodiments are possible.

A memory stick configured for use with a processor in a computer is provided. The memory stick includes a printed circuit board with first and second sides, each of the first and second sides including eighteen memory chips, each of the memory chips being an ×8 DRAM chip; the eighteen memory chips being distributed into first, second, third and fourth rows, the first row and the second row being on a left half of the printed circuit board and the third and fourth row being on a right half of the printed circuit board; and the printed circuit board including at least 400 pins including at least 16 pins for ECC bits and at least 128 pins for data bits; wherein at least the memory chips and the 128 pins for data bits establish a 128-bit data width to communicate.

To protect memory cards, such as SD type cards, and similar devices from Electrostatic Discharge (ESD), the input pads of the device include points along their edges that are aligned with correspond points on a conductive frame structure mounted adjacent the input pad to form a spark gap. The input pads are connected to a memory controller or other ASIC over signal lines that include a diode located between the input pad and the ASIC and a resistance located between the input pad and the diode. The resistance and diode are selected such that an ESD event at an input pad triggers a discharge across the spark gap before it is transmitted on to the ASIC, while also allowing a high data rate for signals along the signal line.

A board shield (52) covers a region in which an electronic part is mounted on a lower surface of a circuit board (50). A memory housing chamber (R1) capable of housing a semiconductor memory is secured on the lower side of the circuit board. The board shield (52) includes a shield wall (52e) along the memory housing chamber R1). With this, it is possible to protect the semiconductor memory while suppressing an increase in the number of parts.

Foldable Compression Attached Memory Modules (fCAMMs) and associated apparatus, assemblies and systems. The fCAMM comprises a compression contact module having a plurality of contact means arranged in one or more arrays on its underside, first and second fold modules including multiple memory devices, and flexible interconnects coupling the compression contact module to the first and second fold modules. Under one assembled configuration, portions of printed circuit boards (PCBs) for the first and second fold modules are folded over portions of the compression contact module. Under another configuration, the first fold module is disposed above the second fold module, which is disposed above the compression contact module. In an assembly or system including a motherboard, a compression mount technology (CMT) connector or a land grid array (LGA) assembly is disposed between the motherboard and the compression contact module. Bolster plates are used to urge the compression contact module toward the motherboard.

A circuit board includes a first insulating layer; a first wiring pattern and a second wiring pattern each formed to be side to side with each other on an upper surface of the first insulating layer; a second insulating layer formed on the upper surface of the first insulating layer to cover the first and second wiring patterns; a third wiring pattern formed on an upper surface of the second insulating layer to overlap the first wiring pattern in a vertical direction; a fourth wiring pattern formed on the upper surface of the second insulating layer to overlap the second wiring pattern in the vertical direction; a first via passing through the second insulating layer and connecting the first and fourth wiring patterns; and a second via passing through the second insulating layer and connecting the second and third wiring patterns.

A memory module mounting apparatus for coupling a memory module to a processor of an information handling system includes a z-axis compression connector and a compression connector mount. The z-axis compression connector has first compression contacts on a first surface of the compression connector and second compression contacts on a second surface of the compression connector. The first compression contacts couple the compression connector to the processor. The compression connector mount has contact pads on a first surface of the compression connector mount. The first contact pads couple the compression connector mount to the first compression contacts, and have contact elements configured to couple the contact pads to the memory module.

Various embodiments described herein provide for printed circuit boards with one or more spaces for embedding components, which can be used to implement a memory sub-system.

A printed circuit board includes a first electrically conductive reference plane configured to distribute a first reference voltage applied thereto across a surface area of the first reference plane, and a second electrically conductive reference plane extending parallel to the first reference plane, and configured to distribute a second reference voltage applied thereto across a surface area of the second reference plane. A first layer is provided, which extends between the first reference plane and the second reference plane, and includes one or more first signal lines extending adjacent the first reference plane. The first layer is divided into: (i) a first region in which the one or more first signal lines are disposed, (ii) a second region containing an additional plane that is configured to receive a third voltage and has smaller surface area relative to the surface areas of the first and second reference planes, and (iii) a third region containing a dielectric layer. A second layer is provided, which extends between the first reference plane and the second reference plane, and includes one or more second signal lines extending adjacent the second reference plane. The second signal lines have linewidths that vary as a function of whether they are vertically aligned with the first region, the second region, or the third region.

Various embodiments described herein provide a label configured for thermal conductivity and configured to pass over an edge of a printed circuit board (PCB) and attached to both sides of the printed circuit board. The label can be used with a printed circuit board that is associated with a memory sub-system, such as a memory module (e.g., solid state drive, SSD module).