Abstract: Systems and methods for providing mechanically reinforced plated through-holes (PTH) in PCBs, which advantageously allow improved soldering capabilities and reliability, are described herein. Such systems and methods are achieved by reducing the heat sinking effects of PTHs by providing one or more vias surrounding the PTHs to provide an electrical connection between the PTH and the internal and bottom conductive layers of a PCB. In this regard, the PTHs are spaced apart from at least one of the internal conductive layers (e.g., ground or power layers), so the heat sinking effects are reduced. This feature enables molten solder to substantially fill the entire PTH before freezing, thereby improving the mechanical and electrical connection between an electrical component and the PCB. One or more electrically-nonfunctional lands (or “rib reinforcements”) are provided in internal conductive layers to mechanically support the walls of the PCB.

Abstract: Apparatuses and methods that provide for enhanced connections between PTHs of multi-layer PCBs and electronic component leads, pins or the like. The apparatuses and methods improve the likelihood that the PTHs are completely filled with solder thereby advantageously allowing the PCBs to exhibit high mechanical and electrical reliability. Complete filling of PTHs is achieved by configuring the electrically conductive layers within the multi-layer PCB stack in a manner that reduces the heat sinking effects of the layers during the soldering process. In this regard, the PTHs may not directly contact all of the internal ground or power planes, so the heat sinking or heat transfer effects are reduced. This feature enables molten solder to substantially or completely fill an entire PTH before freezing.

Abstract: Systems and methods for providing mechanically reinforced plated through-holes (PTH) in PCBs, which advantageously allow improved soldering capabilities and reliability, are described herein. Such systems and methods are achieved by reducing the heat sinking effects of PTHs by providing one or more vias surrounding the PTHs to provide an electrical connection between the PTH and the internal and bottom conductive layers of a PCB. In this regard, the PTHs are spaced apart from at least one of the internal conductive layers (e.g., ground or power layers), so the heat sinking effects are reduced. This feature enables molten solder to substantially fill the entire PTH before freezing, thereby improving the mechanical and electrical connection between an electrical component and the PCB. One or more electrically-nonfunctional lands (or “rib reinforcements”) are provided in internal conductive layers to mechanically support the walls of the PCB.

Abstract: Apparatuses and methods that provide for enhanced connections between PTHs of multi-layer PCBs and electronic component leads, pins or the like, are described herein. The apparatuses and methods improve the likelihood that the PTHs are completely filled with solder thereby advantageously allowing the PCBs to exhibit high mechanical and electrical reliability. Complete filling of PTHs is achieved by configuring the electrically conductive layers within the multi-layer PCB stack in a manner that reduces the heat sinking effects of the layers during the soldering process. In this regard, the PTHs may not directly contact all of the internal ground or power planes, so the heat sinking or heat transfer effects are reduced. This feature enables molten solder to substantially or completely fill an entire PTH before freezing.

Abstract: Implementations of the present invention may involve methods for providing an optical differentiation on a printed circuit board to assist in identifying a missing or improperly mounted component. The optical differentiation may be such that, when a component of the board is missing or improperly attached to the board, a distinct optical difference is created on the board in the visible or non-visible spectrum. Several implementations may create a visible color difference, a non-visible mark, a recognizable shape, texture change, cross hatching or other form of physical modification beneath the component or on the printed circuit board. Other implementations may include the optical differentiation within a silk-screen of the board or on an internal layer of the board.