Abstract: A filtered connector is provided of the type that includes an inductor (40) and capacitors (51, 52) connected in a pi filter arrangement to each contact (20) of the connector to attenuate high frequency noise, is enhanced to better block very high frequency noise. Each of applicant's filters that are connected to a contact have at least two capacitors (51, 53 and 52, 54) on either side of the inductor, the two capacitors being connected to contact locations that are spaced apart.

Abstract: A filtered connector with multiple pin contacts (14) connected to ground by Pi filters, which can be constructed at low cost. Two circuit board portions (24, 26) that are spaced apart by ferrite beads (40), are portions of a single flexible circuit board (50) that are connected together by a loop portion (52) of the circuit board. A ground plane (100) of the circuit board is connected to a metal shell (130) that surrounds the circuit boards and pins, by bending peripheral portions (140, 142) of the circuit board as it is pressed into the shell and soldering the peripheral portions to the shell. Each of the pins is connected to a signal trace (80, 82) on the circuit board by the hole edge of each circuit board being deflected out of its original plane by the pin, to assure the flow of solder between the signal trace and the pin.

Abstract: A standard D-sub connector is modified to connect a capacitor (64) between each of many contacts (14) and the grounded metal shell (16), in a construction of minimum parts. A flexible circuit (62) is provided with numerous metal-plated ground holes and signal holes, each ground hole connected to a capacitor terminal (142) and to a common ground plane (150), and each signal hole connected to a capacitor terminal (140) and to a contact (14). The flexible circuit has edge portions (81-84) that are bent to locate outer edge parts (152) of the ground plane against a flange (42) of the connector metal shell to which the ground plane is connected as by a solder joint (154).

Abstract: A filtered connector with multiple pin contacts (14) connected to ground by Pi filters, which can be constructed at low cost. Two circuit board portions (24, 26) that are spaced apart by ferrite beads (40), are portions of a single flexible circuit board (50) that are connected together by a loop portion (52) of the circuit board. A ground plane (100) of the circuit board is connected to a metal shell (130) that surrounds the circuit boards and pins, by bending peripheral portions (140, 142) of the circuit board as it is pressed into the shell and soldering the peripheral portions to the shell. Each of the pins is connected to a signal trace (80, 82) on the circuit board by the hole edge of each circuit board being deflected out of its original plane by the pin, to assure the flow of solder between the signal trace and the pin.

Abstract: A connector includes an insulative housing and rows of contacts with downwardly projecting lower ends soldered to contact pads on a circuit board, which assures engagement of all contact lower ends with all contact pads despite tolerance buildup due to housing warping. Each contact has upper and lower contact elements (50, 52) biased apart by a coil spring (54). When the connector is placed on a circuit board (14), the connector is moved down until spacers (92) on the housing lower surface engage the circuit board and cause the lower ends of all contacts to be upwardly deflected to firmly engage the contact pads for reliably soldering to them. One of the contact elements has a pair of beams (110, 112) that are slideably engaged in a cylindrical hole (130) in the other contact element to assure good electrical contact and to avoid large inductances that would arise if most currents passed through the coil spring.

Abstract: Contacts (12) that are terminated to the front ends of wires (22) are rapidly mounted in a connector shell (20) while assuring reliable separation of the contacts. After each contact is terminated to the front end of a wire, the contact is laid in a slot (60) of an insulative retainer (50). The retainer is then inserted forwardly between top and bottom arms (70, 72) of the rear portion (64) of an insulative body, while the contacts project into passages (14) in the front portion of the body. The assembly of retainer and body is inserted into the shell (20) that has a cylindrical inner surface (110) that radially positions the retainer between the arms of the body. A crimp barrel (122) is moved forwardly into the shell to about the rear of the retainer, a braiding (34) of a cable that contains the wires is folded back around the crimp barrel, and the rear portion (120) of the shell is crimped around the braiding and crimp barrel.

Abstract: A connector has a frame (12) with passages (22) that hold contact assemblies (20), the contact assemblies having lower ends (114) soldered to traces (52) on a circuit board (54) and depressable upper ends, which provides low resistance within each contact assembly and which assures reliable soldering to traces on the circuit board. Each contact assembly includes a metal sleeve (60), a pogo tip (30) with a body (64) vertically slidable in the sleeve and a post (66) projecting above the sleeve, and a helical spring (72) that urges the pogo tip upwardly. The spring has an upper end (92) shaped to engage only one side of the bottom of the pogo tip body to cock the pogo tip for low resistance engagement with the sleeve. The spring is of much lower conductivity than the sleeve, to minimize current flow through the spring and unwanted inductance. The frame includes an elastomeric plate (84) that lies in an interference fit with each contact.

Abstract: A connector includes an insulative housing and rows of contacts with downwardly projecting lower ends soldered to contact pads on a circuit board, which assures engagement of all contact lower ends with all contact pads despite tolerance buildup due to housing warping. Each contact has upper and lower contact elements (50, 52) biased apart by a coil spring (54). When the connector is placed on a circuit board (14), the connector is moved down until spacers (92) on the housing lower surface engage the circuit board and cause the lower ends of all contacts to be upwardly deflected to firmly engage the contact pads for reliably soldering to them. One of the contact elements has a pair of beams (110, 112) that are slideably engaged in a cylindrical hole (130) in the other contact element to assure good electrical contact and to avoid large inductances that would arise if most currents passed through the coil spring.

Abstract: Contacts (12) that are terminated to the front ends of wires (22) are rapidly mounted in a connector shell (20) while assuring reliable separation of the contacts. After each contact is terminated to the front end of a wire, the contact is laid in a slot (60) of an insulative retainer (50). The retainer is then inserted forwardly between top and bottom arms (70, 72) of the rear portion (64) of an insulative body, while the contacts project into passages (14) in the front portion of the body. The assembly of retainer and body is inserted into the shell (20) that has a cylindrical inner surface (110) that radially positions the retainer between the arms of the body. A crimp barrel (122) is moved forwardly into the shell to about the rear of the retainer, a braiding (34) of a cable that contains the wires is folded back around the crimp barrel, and the rear portion (120) of the shell is crimped around the braiding and crimp barrel.

Abstract: A coaxial type connector has largely rectangular cross-sections, with an outer contact width (E) that is much larger than its height (H). As a result, the impedance is lowest in primary sectors (140, 142) that extend between the inner contact (20) and top and bottom inside surfaces (136, 138) of the outer conductor, while the impedance is highest in secondary sectors (144, 146) that extend horizontally from the inner conductor to each side (132, 134) of the outer conductor. Applicant maintains a largely constant impedance at the primary sectors, while allowing changes in impedance at the secondary sectors as by cutouts (60, 160) in insulation at the secondary sectors for receiving retention tabs. As a result of the largely rectangular shape, the center contact can be formed of sheet metal of constant height (J) and of a width that can vary to provide enlargements (94, 96, 92) for retention and for mating at the front end of the connector, with minimal overall impedance change.

Abstract: An electronic device such as an IC card (10), is provided with a plug-receiving receptacle connector (18) at its rear end which is of simple and compact design so it takes up a minimum of space and allows direct connection between the plug contacts (34) and circuitry (80) on the circuit board (12) of the electronic device. An IC card has a top cover (50) with a portion (56) of molded polymer material that forms a cavity (20) between its rear end and the rear of the circuit board upper face into which the plug can be inserted. The circuit board has traces (80) on its upper face and the molded portion of the cover forms cam walls for depressing plug contacts against the traces. The lower cover has a polymer cover portion (62) that supports the rear end of the circuit board and that forms a lead-in (86) for guiding a plug into the cavity. The plug has contacts whose free forward end portions each includes a horizontal rear section (106) and an inclined front section (108).

Abstract: A receptacle (12) is provided for mounting on a board (14) and for receiving a plug (16), where the receptacle is strengthened to prevent the plug from tilting about a lateral (L) axis when a cable (18) extending from the plug is pulled up or down. The receptacle has laterally opposite sides that each forms at least the upper wall (44) of a key-receiving slot (24, 26), for receiving keys (20, 22) at laterally opposite sides of the plug, to fix the vertical position of the plug and prevent the plug from tilting. The receptacle includes a body (80) of molded polymer material, and also includes first and second pairs of clips (60,62) that are each formed of an engineering metal. Each clip has a clip part (64) that forms a portion of the upper slot wall that prevents upward movement and tilting of the plug, and each clip has downwardly projecting pins (70, 72) that are received in holes (77, 78) in the board and are soldered thereto.

Abstract: A receptacle connector (12) is provided for mounting on a circuit board (14) and for receiving a plug (30) to deflect the plug contacts (32) against contact pads (20) on the board, wherein a receptacle connector of simple design provides EMI (electromagnetic interference) shielding, means for fixing itself to the board in a simple and accurate manner, and means for secure plug latching. The receptacle connector includes a die cast metal housing and a plastic molded cam wall (26) fixed to the housing. The housing has three solder pad projections (100, 102, 104) at its bottom which are soldered to ground traces (110, 112, 114) on the circuit board to hold the housing in place and with its horizontal plane accurately parallel to the plane of the circuit board. The metal of the die cast housing provides EMI shielding and provides metal strikes (54) against which plug latches (50) are latched.

Abstract: A connector system includes a receptacle housing (30) with a cam wall (32) lying over a row of traces (16) on a circuit board, and a plug connector (22) with plug contacts (20) that are downwardly deflected by the cam wall against the traces as the connectors mate, which is especially compact and which provides extra protection against damage to the plug contacts. The cam wall projects rearwardly from a front wall (50) of the receptacle housing, with the rear portion of the cam wall free of connection to the rest of the housing, so it can enter an opening (110) at the front end of the plug connector. This results the cam wall providing side spaces (64, 66) and areas therebelow where aligner slots (80, 82) are located for receiving aligners and where latches (90, 92) can enter to engage strikes (94, 96). Also, this enables the plug connector housing to have a top wall (122) that lies over the plug contacts to protect them.

Abstract: A right angle coaxial connector is disclosed which employs a die cast housing in which the center contact of the connector is mounted. The housing has a rearwardly-extending flap, and side walls that are perpendicular to the flap. The side walls have arcuate-shaped forming surfaces thereon over which the flap is bent downwardly to close the rear of the housing.