Abstract:
A printed circuit board on which a surface mount electronic device is mounted. The printed circuit board includes a substrate on which land arrangements are disposed in an array. Each land arrangement includes a core portion and drawing portions. The drawings are disposed along diagonal directions relative to the core portions of the array of the land arrangements.
Abstract:
An assembly structure is provided. The assembly structure includes a first substrate, a second substrate and a medium layer disposed between the first and second substrates. The medium layer includes a side edge, and the second substrate includes at least one lead wire. When the second substrate is disposed on the medium layer, the lead wire of the second substrate is relatively oblique to the side edge of the medium layer.
Abstract:
Embodiments of the present invention provide an arrangement structure capable of reducing noise caused by a laminated ceramic capacitor mounted on a printed circuit board. A unit arrangement structure includes ceramic capacitors. Among the laminated ceramic capacitors, capacitors are arranged so that capacitor axes thereof extend along a first axis, while the other ceramic capacitors are arranged so that capacitor axes thereof extend along a second axis crossing the first axis. In accordance with such an arrangement structure, it is possible to effectively suppress noise even in the case of single-side mounting.
Abstract:
An electronic element module and an electronic device using the same are provided. The electronic element module includes a circuit board and at least a capacitor. In one embodiment, the circuit board has a plurality of contacts. The capacitor is disposed on the circuit board with a gap therebetween. Besides, the capacitor has a plurality of terminals electrically connected to the contacts correspondingly. The gap is filled with a glue.
Abstract:
The invention discloses design concepts and means and methods that can be used for enhancing the reliability and extending the operating life of electronic devices, and assemblies incorporating such devices, and substrates and/or PCBs, especially if such assemblies are exposed to severe environmental conditions such as thermal cycling or power cycling. The main thrust of the invention is to provide flexible joints, such as columns, between the attached components, and preferably to orient such joints, so that they would present their softest bending direction towards the thermal center or fixation point of the assemblies. Joints with rectangular or elongated cross-section are preferred, and they should be oriented so that the wide face of each joint would be facing the thermal center, perpendicular to the thermal deformation ray emanating from the thermal center towards the center of each respective joint. The concepts apply equally to leadless packages as well as to leaded packages.
Abstract:
An electronic element module and an electronic device using the same are provided. The electronic element module includes a circuit board and a plurality of electronic elements. In one embodiment, the circuit board has a plurality of leg-holes. Each of the electronic elements includes a body and a plurality of legs that connected to the body. Wherein, the bodies of the electronic elements are glued each other, and the legs of the electronic elements are partially plugged in the leg-holes. In another one embodiment, the circuit board has a plurality of contacts. The electronic element is disposed on the circuit board with a gap therebetween. The electronic element has a plurality of terminals that electrically connect to the contacts of the circuit board correspondingly. Otherwise, the gap is filled with glue.
Abstract:
Disclosed are electrical connectors and methods of assembling an electrical connector having “standard” (i.e., with electrical contacts having in-line tails), jogged (i.e., with electrical contacts having jogged tails but not connected orthogonally to another connector through a substrate), and/or “orthogonal” (i.e., with electrical contacts having jogged tails that are used in an orthogonal application) leadframe assemblies in the same connector. This provides the flexibility of using some of the available contacts in an orthogonal application and, at the same time, having remaining contacts available for routing on the midplane PCB. Though this could be done using only orthogonal leadframe assemblies, the combination of standard leadframe assemblies with orthogonal leadframe assemblies creates additional spacing between the PCB vias, so that signal traces can be more easily routed on the midplane PCB.
Abstract:
A circuit board includes a capacitor having two pins disposed thereon. A line determined by the two pins of the capacitor is not perpendicular to any of main sides of the circuit board.
Abstract:
Terminal electrodes 9 for carrying a high frequency device 3 are formed on a surface of a circuit board having its reverse surface covered with a reverse surface conductor layer 6, and a plurality of signal lines 2 for exchanging a signal between the high frequency device 3 and an external circuit are formed thereon. The terminal electrode 9 is arranged at the center of the circuit board, and the signal lines 2 radially extends from the terminal electrode 9. Electromagnetic interference between the signal lines 2 can be reduced, so that out-of-band attenuation characteristics and isolation characteristics can be satisfactorily exhibited in a case where the high frequency device 3 is a duplexer.
Abstract:
An optical scanning unit that deflects light in a main scanning direction to radiate the light on an exposure object. The optical scanning unit includes a light source having a signal terminal, and a circuit board having a slot-shaped inserting portion into which the signal terminal is inserted.