摘要:
A lead material for an electronic part having no adverse effect on the environment, having excellent solderability, desirable welding strength during welding and a low degree of nonuniform thickness of the plated layer during reflow processing. The lead material has a first plated layer and a second plated layer, both of which do not contain Pb, laminated on the surface of a conductive substrate in such order. The melting point of the second plated layer is lower than that of the first plated layer. The first and second plated layers are made of a Sn substance and a Sn alloy, respectively or vice versa.
摘要:
A lead material for an electronic part having no adverse effect on the environment, having excellent solderability, desirable welding strength during welding and a low degree of nonuniform thickness of the plated layer during reflow processing. The lead material has a first plated layer and a second plated layer, both of which do not contain Pb, laminated on the surface of a conductive substrate in such order. The melting point of the second plated layer is lower than that of the first plated layer. The first and second plated layers are made of a Sn substance and a Sn alloy, respectively or vice versa.
摘要:
To provide a plated material having both high heat-resistance and good insertability/extractability. The plated material comprises an undercoating of any one of metals belonging to group 4, group 5, group 6, group 7, group 8, group 9 or group 10 of the periodic table or an alloy containing any one of those metals as a main component, an intermediate coating of Cu or a Cu alloy, and a top-coating of Sn or an Sn alloy, the undercoating, the intermediate coating and the top-coating being formed on a surface of an electrically conductive base in this order, and the thickness of the top-coating is 1.9 times or more the thickness of the intermediate coating.
摘要:
An electric contact material containing Li oxide of 0.01 to 2.0% by weight when represented in terms of the amount of Li, oxide of at least one rare earth element of 0.05 to 0.18% by weight when represented in terms of the amount of the rare earth element, and Ag or Ag alloy as the remaining portion; an electric contact material containing Li oxide of 0.01 to 2.0% by weight when represented in terms of the amount of Li, at least one rare earth element of 0.05 to 0.18% by weight when represented in terms of the amount of the rare earth element, at least one element selected from a group consisting of In, Sn, Zn, Mn, Pd, Sb, Cu, Mg, Pb, Cd, Cr and Bi by an amount of 0.1 to 1.0% by weight (however, in the case of Zn and Mn, the amount is set less than 0.5% by weight), and/or at least one element selected from a group consisting of Fe, Ni and Co by an amount of 0.03 to 0.6% by weight, and Ag as the remaining portion; and an electric contact formed by using the above material. It is excellent in the arc resistance, wear resistance an lubricity in a small current region and is suitable as the material for a slide contact and rotary slide contact.
摘要:
An electric contact material comprising 0.01 to 2.0 weight % of Li, 0.01 weight % or more to less than 0.2 weight % of at least one rare earth metal and the remainder being Ag. The electric contact material may further comprise 0.1 to 1.0 weight % of at least one element selected from a group consisting of In, Sn, Zn, Mn, Pd, Sb, Cu, Mg, Pb, Cd, Cr and Bi, however, for Zn and Mn, the amount is less than 0.5 % by weight; and/or 0.03 to 0.6 weight % of at least one element selected from a group consisting of Fe, Ni and Co. The electric contact material is excellent in arc resistance, wear resistance and lubricity in a small current region and is suitable as a material for a slide contact and a rotary slide contact.
摘要:
An oligonucleotide derivative comprises repeating structural units represented by the following general formula (wherein B represents adenine, guanine, cytosine, or uracil; X represents a sulfur atom or an oxygen atom; n represents an integer of 6 to 60; and B and X are independently represented in each of the repeating structural units), wherein X is a sulfur atom in at least one of the repeating structural units represented by the general formula:
摘要:
To provide a viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and which attains, at a high level, the compatibility of being enhanced in viewing angle with a decrease in the darkening of images at the time of observing the screen from the front thereof. A viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and simultaneously satisfies the following requirements (1) to (3): (1) the film has a parallel ray transmittance of 5 to 90%; (2) the film has a diffusivity (A) of 1 to 20 degrees in its main diffusion direction; and (3) the film has a diffusivity ratio of 0.25 to 15% in the main diffusion direction.
摘要:
A copper foil reducing transmission loss at a high frequency and excellent in bond strength with a resin substrate, including at least a granular layer and a columnar layer in its thickness direction, the columnar layer being formed on at least one surface of the granular layer forming the copper foil or the granular layer being formed on at least one surface of the columnar layer forming the copper foil, the relation of the thickness A of the granular layer and the thickness B of the columnar layer in the copper foil being preferably A/(A+B)=40 to 99%, a method of production and apparatus for production for the same, and a high frequency circuit using the same.
摘要翻译:铜箔在高频下降低传输损耗,并且与树脂基板的粘合强度优异,其厚度方向至少包括粒状层和柱状层,所述柱状层形成在所述粒状层的至少一个表面上 铜箔或颗粒层形成在形成铜箔的柱状层的至少一个表面上,粒状层的厚度A与铜箔中柱状层的厚度B的关系优选为A /( A + B)= 40〜99%,制造方法及其制造装置以及使用该方法的高频电路。
摘要:
A conductive base material with resistance layer provided with roughened conductive base material on the surface of which the resistance layer is formed with uniform thickness distribution, and a resistance circuit board material using the same, wherein electrodeposited copper foil having granular crystals is roughening treated on at least one surface to obtain Rz of not more than 2.5 μm and the resistance layer of Ni alloy layer containing at least 8 to 18 wt % of P is formed on the roughening treated side.
摘要:
A copper foil reducing transmission loss at a high frequency and excellent in bond strength with a resin substrate, including at least a granular layer and a columnar layer in its thickness direction, the columnar layer being formed on at least one surface of the granular layer forming the copper foil or the granular layer being formed on at least one surface of the columnar layer forming the copper foil, the relation of the thickness A of the granular layer and the thickness B of the columnar layer in the copper foil being preferably A/(A+B)=40 to 99%, a method of production and apparatus for production for the same, and a high frequency circuit using the same.
摘要翻译:铜箔在高频下降低传输损耗,并且与树脂基板的粘合强度优异,其厚度方向至少包括粒状层和柱状层,所述柱状层形成在所述粒状层的至少一个表面上 铜箔或颗粒层形成在形成铜箔的柱状层的至少一个表面上,粒状层的厚度A与铜箔中柱状层的厚度B的关系优选为A /( A + B)= 40〜99%,制造方法及其制造装置以及使用该方法的高频电路。