Abstract:
A flat twisted electrical terminal (30) is provided for connecting a first circuit element (14) to a second circuit element (22) on respective first and second circuit boards (12 and 20). The terminal (30) includes a flat conductive member having a first end (32) for connecting to a first circuit element (14) and a second end (34) for connecting to a second circuit element (22). The conductive member is axially twisted about its longitudinal axis.
Abstract:
An electronic package (10) is provided which includes a circuit board (12) having a substrate (14) and circuitry (16) and a surface mount device (22) having a contact terminal (24). A mounting pad (28) is formed on the circuit board (12). The electronic package (10) also includes a solder joint (30) connecting the contact terminal (24) of the surface mount device (22) to the mounting pad (28) on the circuit board (12). The solder joint (30) includes a reflowable solder and a plurality of stand-off members (32 or 42). The stand-off members (32 or 42) provide a separation distance (H) between the circuit board (12) and surface mount device (22) in the range of about 0.01 mm to 0.10 mm.
Abstract:
A process for stabilizing an electrical component having a body and electrical leads projecting from the body and received in through-holes defined in a substrate, while avoiding disadvantages associated with dispensing a hot-melt adhesive during assembly of an electrical package, involves steps of providing a circuit substrate having through-holes for receiving the leads of a leaded electrical component, providing an electrical component having a body and leads extending from the body, positioning a preformed hot-melt adhesive on the circuit substrate or on the electrical component, positioning the electrical component on the circuit substrate so that the leads extend into the through-holes and so that the preformed hot-melt adhesive is positioned between and fills the gap between the body of the electrical component and the substrate, and activating and solidifying the hot-melt adhesive to securely adhere the body of the electrical component to the substrate.
Abstract:
An electronic component arrangement (10) includes a discrete electronic component (12) having first and second terminals (20, 22) and a centre-exposed pad (29). A substrate (14) has a first electrical conductor (32) electrically connected to the first terminal, a second electrical conductor (34) electrically connected to the second terminal, and a third electrical conductor (31). A thermally conductive element (26) is in direct thermal communication with both said centre-exposed pad of said electronic component and said third electrical conductor of said substrate.
Abstract:
An electronic package (10) is provided having a surface mount electronic device (40) connected to a circuit board (12). The package (10) includes a circuit board (12) and a surface mount electronic device (40). A mounting pad (28) is formed on the circuit board (12). A plurality of vias (30) are formed each having an opening extending into the circuit board (12) and extending through the mounting pad (28). The package (10) further includes a solder joint (32) connecting a contact terminal (42) of the surface mount device (40) to the mounting pad (28) on the circuit board (12). The solder joint (32) extends at least partially into the openings in each of the plurality of vias (30) to support the arrangement of the surface mount device (40) on the circuit board (12).
Abstract:
An electronic component arrangement (10) includes a discrete electronic component (12) having first and second terminals (20, 22) and a centre-exposed pad (29). A substrate (14) has a first electrical conductor (32) electrically connected to the first terminal, a second electrical conductor (34) electrically connected to the second terminal, and a third electrical conductor (31). A thermally conductive element (26) is in direct thermal communication with both said centre-exposed pad of said electronic component and said third electrical conductor of said substrate.
Abstract:
A process for stabilizing an electrical component having a body and electrical leads projecting from the body and received in through-holes defined in a substrate, while avoiding disadvantages associated with dispensing a hot-melt adhesive during assembly of an electrical package, involves steps of providing a circuit substrate having through-holes for receiving the leads of a leaded electrical component, providing an electrical component having a body and leads extending from the body, positioning a preformed hot-melt adhesive on the circuit substrate or on the electrical component, positioning the electrical component on the circuit substrate so that the leads extend into the through-holes and so that the preformed hot-melt adhesive is positioned between and fills the gap between the body of the electrical component and the substrate, and activating and solidifying the hot-melt adhesive to securely adhere the body of the electrical component to the substrate.
Abstract:
A circuit assembly (10) comprising a substrate (12) formed to have one or more apertures (14,28) that define one or more compliant members (20) in the substrate (12), and to which a circuit device (18) can be attached so as to reduce thermally-induced stresses in the device (18) and in solder joints (19) securing the device (18) to the substrate (12). The compliant members (20) are sufficiently compliant to permit relatively large surface-mount devices (18) to be attached to an organic substrate (12) without sacrificing reliability.
Abstract:
A vibration-sensitive module (12) having a mounting flange (36) is mounted to a vibrational base (10) with a bushing assembly (34) secured to the base (10), where the mounting flange (36) has cammed surfaces (36e, 36f) radially adjacent to the bushing assembly (34) that variably engage the radial peripheries of the bushings (38, 40) in response to vibrational movement of the base (10). The cammed surfaces (36e, 36f) produce a desired force vs. deflection characteristic of the mounting apparatus, and the bushing material retains its compressibility under load to minimize cross-coupling of vibrational force impulses.