Abstract:
A PTC device formed integrally on a PCB substrate, such a PCB substrate, a secondary battery protection circuit device comprising such PCB substrate provided with a circuit to control the voltage and current of secondary batteries, and a secondary battery assembly provided with said device. A PCB substrate 1 is provided with an electronic component 2 and a PTC device 3. The PTC device 3 has a construction having a PTC material 6 in the centre, which is provided with foils 71, 72 made of nickel foil on its top and bottom; an outlet electrode 4 is provided on the foil 71, and an outlet electrode 5, provided on the PCB substrate, is soldered below.
Abstract:
Holes are formed in a ceramic substrate before sintering, magnetic parts and dielectric parts are fitted in the holes and the substrate is sintered at a temperature equal to or lower than the sintering temperature of the magnetic parts. It is possible to obtain a very compact high frequency integrated circuit, particularly, a micro wave integrated circuit which can be utilized in a frequency band of several tens GHz, by using hard ferrite as a material of the magnetic parts and magnetizing them after the sintering.
Abstract:
An electrical device which comprises first and second laminar electrodes and a laminar PTC resistive element sandwiched between them, the device comprising
(a) a main portion which comprises a main part of the first electrode, a main part of the second electrode, and a main part of the resistive element; and (b) a first connection leg which extends away from the main portion and which comprises a first leg part of the first electrode which is integral with the main part of the first electrode, and a first leg part of the resistive element which is integral with the main part of the resistive element. Such devices can be secured to circuit boards in a variety of ways, and to elastically deformed terminals.
Abstract:
Es soll eine einfache automatisierbare und wärmestabile Halbleiterkontaktierung für lineare und flächige SMD-Bauteile, insbesondere LED-Anordnungen verwirklicht werden. Hierzu werden auf eine mit Leiterbahnen beschichtete Trägerfolie SMD-Bauteile aufgesetzt, wobei die Leiterbahnen zur einfacheren Kontaktierung durch Aufschmelzen entweder ganz oder teilweise aus lötbarem Material bestehen.
Abstract:
A low-cost device for packaging LED dies provides superior reflectivity and thermal conductivity without covering entire surfaces of an LED luminaire with an expensive reflective aluminum substrate. The LED packaging device includes a highly reflective substrate disposed in a hole in a printed circuit board. The substrate has a reflectivity greater than 97% and includes an insulating layer and a reflective layer disposed above a thicker aluminum layer. An LED die is disposed on the top surface of the substrate. The PCB has a layer of glass fiber in resin and a metal layer. The lower surface of the PCB and the bottom surface of the substrate are substantially coplanar. The metal layer of the PCB is electrically coupled to the LED die only through bond wires. Electronic circuitry is disposed on the upper surface of the PCB and is used to control light emitted from the LED die.
Abstract:
A low-cost device for packaging LED dies provides superior reflectivity and thermal conductivity without covering entire surfaces of an LED luminaire with an expensive reflective aluminum substrate. The LED packaging device includes a highly reflective substrate disposed in a hole in a printed circuit board. The substrate has a reflectivity greater than 97% and includes an insulating layer and a reflective layer disposed above a thicker aluminum layer. An LED die is disposed on the top surface of the substrate. The PCB has a layer of glass fiber in resin and a metal layer. The lower surface of the PCB and the bottom surface of the substrate are substantially coplanar. The metal layer of the PCB is electrically coupled to the LED die only through bond wires. Electronic circuitry is disposed on the upper surface of the PCB and is used to control light emitted from the LED die.
Abstract:
Disclosed are low profile discrete electronic component structures that are suitable for placement and use in a vertical interconnection mode either within an electronic interconnection substrate, between interconnection substrate and electronic component or within an IC package.
Abstract:
A method for coupling a battery within an embedded system is described. The method includes creating a hole extending through a printed circuit board (PCB), inserting a portion of the battery into the hole, and electrically coupling the battery to at least one contact.
Abstract:
A printed circuit board having an embedded chip capacitor includes a first conductive layer; a second conductive layer, placed away from the first conductive layer; a chip capacitor, having a first electrode connected to the first conductive layer through being seated in a cavity formed between the first conductive layer and the second conductive layer; a filled material, filled in a space excluding a space occupied by the chip capacitor in the cavity; and a via, penetrating the filled material and connecting the second conductive layer to the second electrode of the chip capacitor.