摘要:
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.
摘要:
A printed circuit board provided with board electrodes, wherein each board electrode is provided with a board electrode base, for carrying by soldering a bottom electrode arranged at a bottom of an electronic device inside from outer edges of the electronic device, arranged inside from the outer edges of the electronic device and a projection projecting out from the board electrode base, narrower in width than the board electrode base, and connected to an interconnect of the printed circuit board.
摘要:
A printed circuit board provided with board electrodes, wherein each board electrode is provided with a board electrode base, for carrying by soldering a bottom electrode arranged at a bottom of an electronic device inside from outer edges of the electronic device, arranged inside from the outer edges of the electronic device and a projection projecting out from the board electrode base, narrower in width than the board electrode base, and connected to an interconnect of the printed circuit board.
摘要:
An electronic component analyzing apparatus is provided with a fixing part configured to hold a substrate to which an electronic component is soldered; a gripper configured to grip the electronic component; a transmission part coupled to the gripper, and configured to transmit an external force to the gripper as a force acting in a direction away from the substrate; and a support part configured to pivotally support the transmission part.
摘要:
An electronic component analyzing apparatus is provided with a fixing part configured to hold a substrate to which an electronic component is soldered; a gripper configured to grip the electronic component; a transmission part coupled to the gripper, and configured to transmit an external force to the gripper as a force acting in a direction away from the substrate; and a support part configured to pivotally support the transmission part.
摘要:
A laminate capacitor circuit board which permits constants of various kinds of circuit elements to be set by selectively effected connections between wiring layers, and a laminate capacitor circuit board which permits distributed circuit constants in a high-frequency wiring layer sandwiched between two shielding wiring layers to be set as desired. These circuits are formed with at least a pattern of a conductive foil on each dielectric layer, and include a plurality of wiring layers laminated one upon another, a wiring layer for connections laminated to a surface of the plurality of wiring layers laminated one upon another, a plurality of terminal patterns formed on the wiring layer for connections in a state insulated from each other, a plurality of vias for electrically connecting at least two of the plurality of terminal patterns to corresponding ones of the plurality of wiring layers, and connecting means for selectively connecting the plurality of terminal patterns to each other.
摘要:
An electronic component analyzing apparatus is provided with a fixing part configured to hold a substrate to which an electronic component is soldered; a gripper configured to grip the electronic component; a transmission part coupled to the gripper, and configured to transmit an external force to the gripper as a force acting in a direction away from the substrate; and a support part configured to pivotally support the transmission part.
摘要:
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.