Abstract:
An edge connector (20) is provided for a printed circuit board (94) having a mating edge (94a) and a plurality of contact pads adjacent the edge. The connector includes an elongated dielectric housing (22) having a board-receiving slot (24) for receiving the mating edge of the printed circuit board. A plurality of spring contact elements (48, 50) are mounted in the housing along at least one side of the slot. The spring contact elements have spring contact portions (48a, 50a) extending into the slot for contacting respective ones of the contact pads on the printed circuit board. A surface (52) on the housing at the one side of the slot defines a datum plane beyond which the spring contact portion of at least one of the spring contact elements extends into the slot. A biasing spring (58, 66, 78, 114) biases the printed circuit board against the surface, thereby deflecting the spring contact portion of the at least one spring contact element a predetermined amount.
Abstract:
A card edge connector assembly includes a printed circuit card (10) having an edge (12) and a plurality of first conductive pads (20) arranged in a pattern on one side of the card near the edge, and a plurality of second conductive pads (22) arranged in a pattern on the opposite side of the card spaced inwardly of the edge and the first conductive pads. An elongated housing (24) is provided with a card receiving slot (25) for receiving the edge of the printed circuit card. A plurality of pairs of contact elements (32a, 32b) are mounted in the housing along the length of the slot. Each pair of contact elements includes a short contact element having a spring contact portion (78) for engaging one of the first conductive pads, and a long contact element having a spring contact portion for engaging one of the second conductive pads. The contact portions of each pair of contact elements are spatially overlapped each other in a direction transversely of the slot to increase the deflection capabilities of the contact elements.
Abstract:
A card edge connector assembly includes an elongated housing (24) having opposite ends (28) with card injection and ejection levers (46) thereat, and a card receiving slot (25) between the ends. A printed circuit card (10) has an edge (12) insertable into the slot. The edge of the card is provided with a notch (16) for embracing a partition (40) spanning the slot of the housing to locate the card longitudinally of the housing. The partition of the housing and the notch in the card edge are complementarily offset from a mid-point of the slot to provide polarization between the card and the housing. Each insertion and ejection lever includes a plurality of spaced projections (64) for interengagement with a plurality of recesses in an adjacent side edge (14) of the printed circuit card. The projections move seriatim into and out of the recesses (18) in response to pivoting of the lever to thereby insert and eject the card to and from the slot in response to pivoting the lever between the latched position and the eject position.
Abstract:
A connector arrangement for electrically connecting circuit elements disposed on two printed circuit boards and spaced apart at centerlines of about 0.050 of an inch or less is described which includes a pitch controlling contact locator cooperating between the mating edge of an edge card and the connector housing. The pitch controlling contact locator includes a resilient supported spring member disposed in the connector cavity generally at the midpoint of the terminal array which is resilient in a vertical direction and substantially rigid in a horizontal direction. It further includes a mating cutout disposed in the mating edge generally at the midpoint of an array of contact pads which is adapted to engage the spring member with two points of contact when the edge card is inserted into the connector cavity. The pitch controlling contact locator effectively reduces lateral mating misalignments introduced in the arrangement by stacking of manufacturing tolerances and vertical mating misalignments caused by mother board warpage introduced by exposure to high temperature wave soldering processing.
Abstract:
A connector assembly can be provided. A receptacle includes terminals that can be positioned in a card slot on a 0.60 mm pitch (or greater). A biasing element can be provided in the card slot to engage a mating paddle card. The receptacle can be configured to allow air to flow from a front face to a rear face, the air passing through a middle wall. A plug assembly can be provided that includes a conductive body and is configured to generate some amount of heat. The body can include a surface that has cooling grooves. The cooling grooves allow air flow over the plug assembly so that the plug assembly can be cooled directly.
Abstract:
A circuit board includes a first and second ground layer and a plurality of signal vias extending between the ground layers but not electrical contact therewith. Ground vias coupled to the first and second ground layers can be positioned adjacent signal vias and can include ground traces that extend between adjacent ground vias. Air holes can be positioned between signal vias and/or adjacent signal vias to modify the electrical performance of the circuit board. Ground wings can be used to help tune common-mode and/or differential-mode impedances.
Abstract:
An electrical connector includes a dielectric housing with a plurality of filtering modules therein. Each filtering module has a housing and a magnetics assembly including transformer cores with wires wrapped therearound. An array of pins extend from the module housing for connection to the wires. A plurality of tails extend from the module housing for interconnection to a circuit board upon which the connector may be mounted. An interconnection is provided between the pins and tails that may include filtering or other signal modifying circuitry. A circuit member having an enhanced layout is also provided for use in or upon which the connector may be mounted.
Abstract:
A board-mountable connector is provided. The connector includes a shield and an insulative housing with a tongue. Terminals are supported by the housing in two rows and the rows extend from a mating interface to a board mounting interface. The terminals may be mounted to the board via surface mount technology in two rows that are at about 0.4 mm pitch. The two rows of terminals are configured in a signal, signal, ground triangular configuration so as to provide a triangular terminal arrangement that extends from the mating interface to the mounting interface.
Abstract:
A shield is provided for use with a connector assembly that includes for sides that form an enclosure, one of the sides being a baseplate. The shield can include a plurality of guides positioned on the baseplate and the plurality of guides can be arranged in a pattern. Each guide can be formed by making two slits in the bottom plate so as to define a body portion of the guide and the body portion can be extended in the enclosure. Each guide can be supported by the baseplate at opposite ends of the body portion.
Abstract:
A high-density connector utilizes a plurality of terminal assemblies that are assembled together into a block, or single unit, to form a connector. Each terminal assembly of the connector utilizes a plurality of conductive terminals having contact portions for mating with an opposing connector, tail portions for mounting to a circuit substrate and body portions held within an insulative body portion of the assembly. The body portions are supported within a housing in the form of a wafer which is plated with a conductive material so as to provide an all encompassing ground structure that surrounds the terminals and their insulative supporting terminal assemblies. In this manner a reference ground is provided around each signal terminal between its contact and tail portions that emulates a coaxial cable. The tails of the terminals and the ground structure have wide body portions with narrow contact portions to promote wicking of solder onto the tails for establishing a reliable solder mounting of the connector to a circuit board.