摘要:
An electroconductive sheet comprising a substrate layer of a thermoplastic resin comprising an acrylonitrile-butadiene-styrene copolymer type resin and/or a polystyrene type resin and having laminated on at least one side of the substrate layer, a surface layer of an electroconductive resin composition comprising a polycarbonate type resin and from 5 to 50 wt % of carbon black.
摘要:
To provide an electrically conductive resin composition with which contamination of an electronic component resulting from abrasion of an electrically conductive sheet by friction with the electronic component is small, and which is excellent in sealing properties with a cover tape.An electrically conductive resin composition comprising 100 parts by mass of a thermoplastic resin containing from 60 to 97 mass % of a polycarbonate resin and from 3 to 40 mass % of at least one hydrocarbon copolymer selected from the group consisting of an olefin copolymer and a styrene copolymer, and from 5 to 50 parts by mass of carbon black, and an electrically conductive sheet comprising the electrically conductive resin composition. Further, an electrically conductive sheet, comprising a substrate layer containing at least one thermoplastic resin selected from the group consisting of an acrylonitrile/butadiene/styrene copolymer (ABS) resin, a polycarbonate resin and a polyalkylene terephthalate resin, and a layer of the above electrically conductive resin composition formed on one side or both sides of the substrate layer.
摘要:
Provided is a metal base circuit board having a new function of a light reflection in addition to the conventional printed circuit board function for mounting electronic parts. The metal base circuit board has a circuit arranged on a metal plate via an insulation layer. A white film is arranged at least one the insulation layer.
摘要:
A carrier tape body having an embossed tape continuously having pockets which contain an electronic component sealed with a cover tape, where the cover tape has a peeling static electrification amount of from −9 to +9 nC when the cover tape has a surface resistivity of at least 1011 Ω, and where the cover tape has a peeling static electrification amount of from −3 to +3 nC when the cover tape has a surface resistivity of less than 1011 Ω.
摘要:
A semiconductor light emitting device comprises: embedding resin; a first lead having a first inner lead section embedded in the embedding resin and a first outer lead section protruding from one side face of the embedding resin; a second lead having a second inner lead section embedded in the embedding resin and a second outer lead section protruding from a side face opposed to the one side face of the embedding resin; a semiconductor light emitting chip mounted on a portion of the first inner lead section exposed in a recess provided on an upper face of the embedding resin; and a wire connecting the semiconductor light emitting chip with the second lead. The first and second inner lead sections and the first and second outer lead sections each have a substantially coplanar rear face. At least a part of the rear face of the first inner lead section and at least a part of the rear face of the second inner lead section are not covered with the embedding resin but are exposed.
摘要:
To provide a conductive composite sheet which has a small difference in physical properties between the machine and transverse directions and has high rigidity and folding endurance and which can easily be thermally formed into a tray or an embossed carrier tape. A composite sheet comprising at least one layer each of a substrate layer (layer A) made of a polystyrene resin and an ABS resin as the main components, a reinforcing layer (layer B) made of an ABS resin as the main component, and a surface layer (layer C) made of, as the main component, a polystyrene resin which contains a conductive filler, wherein the surface on at least one side is the above surface layer (layer C). Further, the surface layer (layer C) is preferably made of a composition containing from 2 to 100 parts by mass of carbon black per 100 parts by mass of the polystyrene resin. On the other hand, the substrate layer (layer A) and the reinforcing layer (layer B) preferably contain a specific amount of a styrene/butadiene/butylene/styrene block copolymer resin or the like.
摘要:
Various semiconductor light emitting devices are described. In one aspect, the semiconductor light emitting device may include, an insulating substrate having an electrode pattern; a metal body provided on the insulating substrate, the metal body having a through-hole; an adhesive layer provided between the insulating substrate and the metal body; a semiconductor light emitting element provided in the through-hole of the metal body, provided on the insulating substrate and electrically connected to the electrode pattern; and a resin configured to seal the semiconductor light emitting, wherein an inner surface of the through-hole faces the semiconductor light emitting element. The inner surface may have a slanted surface and at least a part of the light emitted from the semiconductor light emitting element reflected by the inner surface.