A system for preventing crosstalk between adjacent channels comprises a crossover connector positioned along a length of one channel such that a portion of a positive trace for a first channel is positioned adjacent to a positive trace of a positive trace of an adjacent channel. The position of the crossover connector is based on preventing crosstalk and crossover connectors on adjacent channels may be staggered to further prevent crosstalk. A crossover connector may be based on capacitors or resistors to prevent crosstalk.

A pin map covers a surface area of a layer of a printed circuit board (PCB). The pin map includes a plurality of electrical designations for each pin in the pin map and a plurality of empty spaces within the pin map. Each electrical designation may be assigned to a pin on the pin map. Each electrical designation includes a positive polarity (P+) pin, a negative polarity (P−) pin, or an electrical ground (G) pin. If a space in the pin map does not have an electrical designation, then it may include an empty space/plain portion of the printed circuit board (PCB). The pin map may include a plurality of rows and a first repeating pin polarity pattern. The first repeating pin polarity pattern may include a lane unit tile. The pin map may help couple two circuit elements together that are attached to one layer of a PCB.

An electrical connector includes a terminal module having a circuit board having first through eighth conductive traces sequentially arranged in a transverse direction and corresponding first through eighth terminals, the third terminal and the sixth terminal being configured for transmitting a pair of differential signals, the fourth terminal and the fifth terminal being configured for transmitting another pair of differential signals, the first through eighth conductive traces being respectively electrically connected to corresponding first through eighth terminals, each of the third conductive trace and the fifth conductive trace including a coupling portion, a size of the coupling portion in the transverse direction is larger than a size of the other part of the corresponding conductive trace in the transverse direction, wherein the coupling portion of the third conductive trace and the coupling portion of the fifth conductive trace overlap in an up and down direction to increase mutual coupling.

A flexible printed circuit (FPC) for a hard disk drive includes a plurality of electrical traces, whereby aggressor traces are isolated from victim traces to avoid crosstalk that could degrade signals. Aggressor traces may be positioned together at one of the edges of each of the top wiring layer and the bottom wiring layer, physically isolated from victim traces. Aggressor traces may be grouped together at either the top wiring layer or the bottom wiring layer, with the victim traces positioned on the layer opposing the aggressor traces. With aggressor and victim traces routed on the same wiring layer, aggressor traces may be routed away from the victim traces with multi-layer routing, by way of vias.

Apparatus having at least one breakout structure are provided. In one example, an apparatus includes a dielectric layer, first and second contact pads, and first and second vias. The first and second contact pads are disposed on the dielectric layer. The first via is disposed through the dielectric layer and coupled to the first contact pad. The first via is offset from the first contact pad in a first direction. The second contact pad is immediately adjacent the first via. The second via is disposed through the dielectric layer immediately adjacent the first contact pad and coupled to the second contact pad. The second via is offset from the second contact pad in a second direction that is opposite of the first direction. The first and the second contact pads define a first differential pair of contact pads that is configured to transmit a first differential pair of signals.

A design program for causing a computer to execute a process including: selecting, based on design data of a printed wiring board, a first transmission line and a second transmission line among transmission lines provided in the printed wiring board; adjusting a first wiring length between a first via in the first transmission line and a third via in the first transmission line, a second wiring length between a second via in the second transmission line and a fourth via in the second transmission line, a length of the first via, a length of the second via, a length of the third via, or a length of the fourth via such that a phase of first crosstalk noise generated between the first via and the second via is inverted between the third via and the fourth via; and outputting the design data corrected based on the adjustment in the board.

A connector assembly is disclosed. The connector assembly can include first and second connectors. The first connector can include a first electronic component mounted on a first component mount region of the first substrate. The second connector can include a second electronic component mounted on a second component mount region of the second substrate. The first connector and the second connector have different profiles from each other as seen from a top plan view, and can have wider middle portions that overlap when assembled. The first connector can be configured to connect to a sensor panel and a first external substrate or component. The second connector can be configured to connect to the sensor panel and a second external substrate or component.

An information handling system includes a printed circuit board, which in turn includes a differential pair, a ground trace, and a ground via. The differential pair includes first and second traces. The ground trace is routed between the first and second traces of the differential pair. The ground via is located along the ground trace. The ground trace and the ground via combine to create a common mode signal filter, which in turn resets a skew of the differential pair.

Microelectronic assemblies, and related devices and methods, are disclosed herein. For example, in some embodiments, a microelectronic assembly may include a dielectric layer, in a substrate, the dielectric layer including an electroless catalyst, wherein the electroless catalyst includes one or more of palladium, gold, silver, ruthenium, cobalt, copper, nickel, titanium, aluminum, lead, silicon, and tantalum; a first conductive trace having a first thickness in the dielectric layer, wherein the first thickness is between 4 um and 143 um; and a second conductive trace having a second thickness in the dielectric layer, wherein the second thickness is between 2 um and 141 um, wherein the first thickness is greater than the second thickness, and wherein the first conductive trace and the second conductive trace have sloped sidewalls.

An information handling system includes a printed circuit board. The printed circuit board includes first and second pads of a first differential pair, a hatched ground, and first and second traces of a second differential pair. The first and second pads of the first differential pair are routed a surface of the printed circuit board. The hatched ground routed within a first layer of the printed circuit board. The first and second traces of the second differential pair are routed below the first and second pads and the hatched ground within a second layer of the printed circuit board. The hatched ground dampens crosstalk between signals on the traces and signals on the differential pair pads.