Abstract:
Methods and apparatus for producing helix windings used for a transformer are provided. For example, apparatus comprise an electrically conductive mandrel comprising an elongated body, a head comprising an eyelet detail, and a winding structure disposed along the elongated body.
Abstract:
An apparatus and method for electrochemically depositing a unitary layer structure using a reactor configured to contain an electrolyte solution with an anode array containing a plurality of independently electrically controllable anodes arranged in a two-dimensional array, a cathode, an addressing circuit for receiving a signal containing anode address data and for outputting a signal causing an anode array pattern; and, a controller. in communication with the addressing circuit and the anode array, configured to electrically control each anode in the anode array to cause an electrochemical reaction at the cathode that deposits a unitary layer structure according to the anode array pattern signal.
Abstract:
A carrier-attached copper foil having satisfactory circuit formability on the ultra-thin copper layer surface is provided. The carrier-attached copper foil has a carrier, an intermediate layer and an ultra-thin copper layer in this order. The ultra-thin copper layer surface has an absorbance of light at a wavelength of 400 nm is 85% or more.
Abstract:
The surface of a substrate made of stainless-steel foil is coated with a Sn alloy layer, with a strike layer in between. The coating ratio of the strike layer on the substrate is 2% to 70%.
Abstract:
A carrier-attached copper foil having satisfactory circuit formability on the ultra-thin copper layer surface is provided. The carrier-attached copper foil has a carrier, an intermediate layer and an ultra-thin copper layer in this order. The ultra-thin copper layer surface has an absorbance of light at a wavelength of 400 nm is 85% or more.
Abstract:
An electrolytic copper plating solution is provided which has an excellent via filling ability without using formaldehyde, which is harmful to the environment. An electrolytic copper plating solution which contains compounds which have an —X—S—Y— structure wherein X and Y are individually atoms selected from a group comprising hydrogen, carbon, sulfur, nitrogen, and oxygen atoms and X and Y can be the same only when they are carbon atoms and specific nitrogen-containing compounds. Good filled vias can be made without causing a worsening of the exterior appearance of the plating by using this electrolytic copper plating solution.