Abstract:
A temperature sensor that includes a first electrode layer, a second electrode layer, and a thermistor layer between the first and second electrode layers. The thermistor layer includes a spinel-type semiconductor ceramic composition powder containing Mn, Ni, and Fe, and an organic polymer component. In the semiconductor ceramic composition powder, the molar ratio of Mn to Ni is 85/15≥Mn/Ni≥65/35, and when the total molar quantity of Mn and Ni is 100 parts by mole, the content of Fe is 30 parts by mole or less, and the semiconductor ceramic composition powder is 2 μm or less in particle size.
Abstract:
An annular ceramic washer has inner and outer cylindrical surfaces, first and second annular surfaces, and a winding path thick film resistor located on the inner surface. Metal washers are preferably brazed to the end ring surfaces. The annular ceramic washer is useful in vacuum tube applications in establishing a voltage on a target utilizing the voltage of an electrode coupled to the winding path thick film resistor.
Abstract:
A laminated chip-type negative characteristic thermistor of 0603 size or less, which includes: a ceramic element of a ceramic material containing Mn and Ni as its main constituents and containing Ti; and an internal electrode containing Pd ratio of 70 weight % or more.
Abstract:
This invention relates to novel chemical compositions and manufacturing methods for producing electro-conductive, metal-ceramic materials having improved structural stability to operate at high temperatures in oxidizing atmospheres.
Abstract:
A voltage variable material (nullVVMnull) including an insulative binder that is formulated to intrinsically adhere to conductive and non-conductive surfaces is provided. The binder and thus the VVM is self-curable and applicable in a spreadable form that dries before use. The binder eliminates the need to place the VVM in a separate device or to provide separate printed circuit board pads on which to electrically connect the VVM. The binder and thus the VVM can be directly applied to many different types of substrates, such as a rigid (FR-4) laminate, a polyimide or a polymer. The VVM can also be directly applied to different types of substrates that are placed inside a device. In one embodiment, the VVM includes doped semiconductive particles having a core, such which can be silicon, and an inert coating, which can be an oxide. The particles are mixed in the binder with conductive particles.
Abstract:
A nickel powder having at at least part of the surface thereof a layer of a composite oxide represented by the formula: A.sub.x B.sub.y O.sub.(x+2y), wherein A stands for at least one element selected from the group consisting of Ca, Sr and Ba; B stands for at least one element selected from the group consisting of Ti and Zr; and x and y represent numbers satisfying the formula: 0.5.ltoreq.y/x.ltoreq.4.5). The nickel powder may further contains at least one selected from among boron oxide, aluminum oxide and silicon oxide. The nickel powder is produced by spray pyrolyzing a solution of thermal decomposable starting compounds of nickel and additive elements and the resultant powder is suitable for use in a thick-film conductor paste having a sintering-starting temperature close to that of ceramic layers and a shrinkage behavior close to that of a ceramic without detriment to the conductivity and electric properties thereof.
Abstract:
A metal alloy having an intrinsically low TCR, and which preferably comprises a metal oxide and forms part of the resistance material in a quantity of 15-60 vol. %. The best results are achieved with a resistance material which comprises an alloy of CuNi as the metal alloy and SiO.sub.2 as the high-ohmic component. The resistors exhibit a relatively high resistance value as well as a relatively low TCR value.
Abstract:
This invention relates to resistor compositions comprising, in % by weight, about 5-24% RuO.sub.2, about 10-20% Ag, about 3-8% Sb.sub.2 O.sub.3, about 8-12% CdO, about 35 to 70% lead-borosilicate glass, up to about 4% Ta.sub.2 O.sub.5 and up to about 2% thermistor powder such as at least one of the transition metals Mn.sub.2 O.sub.3, NiO, CuO, Cr.sub.2 O.sub.3 and ZnO. These resistor compositions are adapted to be dispersed in a liquid vehicle to form a resistor ink or paste that can be applied to a surface of a ceramic substrate and fired to form a resistor having stable electrical and mechanical properties.
Abstract translation:本发明涉及电阻组合物,其包含按重量计约5-24%RuO 2,约10-20%Ag,约3-8%Sb2O3,约8-12%CdO,约35-70%铅硼硅酸盐玻璃 ,高达约4%的Ta 2 O 5和至多约2%的热敏电阻粉末,例如过渡金属Mn 2 O 3,NiO,CuO,Cr 2 O 3和ZnO中的至少一种。 这些电阻器组合物适于分散在液体载体中以形成可施加到陶瓷基片的表面并烧制以形成具有稳定的电气和机械性能的电阻器的电阻器墨水或糊料。
Abstract:
A novel humidity sensor printed and fired on a dielectric substrate comprising an interdigitated pattern of a conductive precious metal with cobalt oxide as the only binder. Sensors according to the invention may be employed as hermeticity detectors in semiconductor packages.