Abstract:
Die Erfindung bezieht sich auf eine Vorrichtung zur Aufnahme und zur Befestigung eines elektronischen Bauelements (9) auf einer Leiterplatte (2). Das Bauelement ist in einem Gehäuse (1) mit einer Bodenfläche (3), mit einer auf die Form der Bodenfläche (3) angepassten Anzahl von Seitenflächen (4) und mit einer entsprechenden Deckfläche (8), die aus einem elektrisch leitenden Material gefertigt ist, angeordnet. Desweiteren ist zumindest ein elektrisch leitendes Verbindungselement (7) vorgesehen, das so ausgebildet und/oder angeordnet ist, dass die Abdeckfläche (5) über das Verbindungselement (7) auf einem Bezugspotential der Leiterplatte (2) liegt.
Abstract:
The method of surface mounting radio frequency components includes using at least one radio frequency component (300, 810, 850) having a pair of input/output contact points (330, 332, 830, 832, 870, 872) or areas at corners on the underside of the component, wherein each of the input/output contact points or areas abuts the adjoining edges of the corners. The component is positioned relative to a pair of traces (846, 856, 858, 860) on a circuit for enabling an electrical connection thereto in a range of angular dispositions. By using a single non-customized component, adjacent components can be configured with a signal flow path of a range between about 0 degree (a chain configuration) and about 180 degrees (a 'U' turn).
Abstract:
The method of surface mounting radio frequency components includes using at least one radio frequency component (300, 810, 850) having a pair of input/output contact points (330, 332, 830, 832, 870, 872) or areas at corners on the underside of the component, wherein each of the input/output contact points or areas abuts the adjoining edges of the corners. The component is positioned relative to a pair of traces (846, 856, 858, 860) on a circuit for enabling an electrical connection thereto in a range of angular dispositions. By using a single non-customized component, adjacent components can be configured with a signal flow path of a range between about 0 degree (a chain configuration) and about 180 degrees (a 'U' turn).
Abstract:
A synthesizer module/oscillator assembly includes a voltage controlled oscillator with a coaxial resonator. In one embodiment, the module measures 20.3mm x 14.8mm x 3.9mm and the coaxial resonator is positioned on the circuit board of the module between a phase locked loop integrated circuit and a main section of the voltage controlled oscillator. The phase locked loop circuit includes a loop filter and is adapted to receive the frequency signal generated by the voltage controlled oscillator and generate an adjusted frequency signal.
Abstract:
The present invention is one where, in a lead wire led-out type crystal oscillator of constant temperature type for high stability, comprising: a heat supply body that supplies heat to a crystal resonator from which a plurality of lead wires are led out, to maintain the temperature constant; an oscillating element that constitutes an oscillating circuit together with the crystal resonator; a temperature control element that constitutes a temperature control circuit for controlling the temperature of the crystal resonator; and a circuit board for mounting the heat supply body, the oscillating element, and the temperature control element, and through which lead wires of the crystal resonator are passed through for mounting, the heat supply body comprises: a heat conducting plate which has through-holes for the lead wires and is mounted on the circuit board, and which faces, and is directly thermally joined to, the crystal resonator; and a chip resistor for heating which is mounted on the circuit board adjacent to the heat conducting plate, and is thermally joined to the heat conducting plate.
Abstract:
A surface mounting package includes a metal base with a lower surface having a through hole, a metal lead arranged to be inserted into the through hole, an insulating material filling in an internal space defined by the metal base, a cap covering the metal base as a lid, and an electronic part component arranged at a surface on the internal space side of the metal lead. The internal space is held at an air-tight atmosphere. The metal base has a lower surface positioned on the same plane as a lower surface of the metal lead or the insulating material, the same plane forming a plane to be attached to a mounting board.
Abstract:
There is disclosed an electronic part comprising: a printed circuit board (1') including a first major surface and a second major surface; a circuit element disposed on the first major surface of the printed circuit board (1'); a terminal electrode (2) disposed on the second major surface of the printed circuit board (1') and including a major surface opposed to the second major surface of the printed circuit board (1'); a soldering-resistant film (3) disposed on the second major surface of the printed circuit board (1') and including a major surface opposed to the second major surface of the printed circuit board (1'); wherein the distance between the major surface of the terminal electrode (2) and the second major surface of the printed circuit board (1') is substantially equal to or larger than the distance between the major surface of the soldering-resistant film (3) in the vicinity of the terminal electrode (2) and the second major surface of the printed circuit board (1').
Abstract:
Dispositif électrique et procédé de fabrication de celui-ci Le dispositif électrique (2, 202) comprend un premier composant électrique (4) et un deuxième composant électrique (6) reliés entre eux par l'intermédiaire d'un moyen de connexion électrique (26) ayant une plaque support (24) électriquement isolante, et un joint de soudure (22) déposé sur la plaque support (24). Le joint de soudure (22) possède une température de fusion (Tf) nettement inférieure à une température ambiante (Ta) de fonctionnement à laquelle est prévu d'être soumis au moins un des deux composants électriques et le moyen de connexion électrique (26). Le dispositif électrique (2) comprend un ciment (28) qui recouvre dans sa totalité le joint de soudure (22) exposé, le matériau du ciment (28) étant choisi pour maintenir son adhésion et son étanchéité vis-à-vis du joint de soudure (22) lorsque la température ambiante (Ta) de fonctionnement est appliquée. Le dispositif électrique (2, 202) comprend un premier composant électrique (4) et un deuxième composant électrique (6) reliés entre eux au travers d'un moyen de connexion électrique (26) ayant une plaque support (24) électriquement isolante, et un joint de soudure (22) déposé sur la plaque support (24). Le joint de soudure (22) possède une température de fusion (Tf) nettement inférieure à une température ambiante (Ta) de fonctionnement à laquelle est prévu d'être soumis au moins un des deux composants électriques et le moyen de connexion électrique (26). Le dispositif électrique (2) comprend un ciment (28) qui recouvre dans sa totalité le joint de soudure (22) exposé, le matériau du ciment (28) étant choisi pour maintenir son adhésion et son étanchéité vis-à-vis du joint de soudure (22) lorsque la température ambiante (Ta) de fonctionnement est appliquée.
Abstract:
An ovenized oscillator package including a ball grid array substrate seated on a circuit board, a heater and a temperature sensor mounted on the ball grid array substrate, and a crystal package mounted to the ball grid array substrate and overlying at least the heater. A layer of thermally conductive epoxy or adhesive material couples the heater to the crystal package. Stabilizer posts, which are made of an insulative adhesive or epoxy material, are formed between the ball grid array substrate and the circuit board for stabilizing and relieving the stress on the ball grid array substrate. A lid is seated on the circuit board and covers and defines an oven for the ball grid array substrate.