A multilayer capacitor and a board having the same mounted thereon are provided. The multilayer capacitor includes a capacitor body including dielectric layers and first and second internal electrodes, and first to sixth surfaces, the first internal electrode being exposed through the third surface and the fifth surface and the second internal electrode being exposed through the fourth surface and the sixth surface; first and second side portions disposed on the fifth and sixth surfaces, respectively, of the capacitor body; first and second external electrodes; a first step-compensating portion disposed on a margin portion in a width direction on the second dielectric layer on which the second internal electrode is formed on the first internal electrode; and a second step-compensating portion disposed on another margin portion in the width direction on the first dielectric layer on which the first internal electrode is disposed on the second internal electrode.

A capacitor may include a stack assembly. The stack assembly may include a plurality of anode plate members, each having an embedded wire. The anode plate members may be separated by at least one cathode foil sandwiched between separator sheets. A conducting member may electrically connect the embedded wires and may have an externally accessible end portion that is hermetically sealed from the interior of the capacitor. A case covers the stack assembly and may be attached to a cover. The case and cover may enclose the stack assembly within an interior area of the capacitor. The at least one cathode foil may be connected to the case. An electrolyte fluid may be disposed within the interior area of the capacitor. A passage may be provided through a central portion of the stack assembly. A tube, surrounded by insulation, may pass through the passage and may be connected to the cover and the case.

A method for producing a resin mold-type electronic component in which an electronic component main body is covered with a mold resin includes preparing a first mold resin provided with a metal terminal, having an accommodating portion for the electronic component main body, and having a joining material filling space to be filled with a joining material, accommodating the electronic component main body in the accommodating portion of the first mold resin, and joining the metal terminal and a terminal electrode of the electronic component main body by filling the joining material filling space with the joining material.

The workpiece protection sheet is used between a suction table and a workpiece in a state where the workpiece protection sheet is sucked to the suction table when the workpiece is pressed on the suction table. The workpiece protection sheet includes a base layer and an ultrahigh molecular weight polyethylene porous layer, an air permeability in a thickness direction of the workpiece protection sheet measured such that the base layer side is at an upstream side of airflow during measuring is 4000 seconds/100 mL or more as represented by a Gurley air permeability measured according to Method B of air permeability measurement specified in JIS L1096, a suction surface to be sucked to the suction table is composed of the base layer, and a contact surface to be in contact with the workpiece is composed of the ultrahigh molecular weight polyethylene porous layer.

The electrode manufacturing method for manufacturing an electrode provided with an active material layer that contains an active material doped with alkali metal. In an atmosphere with an oxygen concentration of 1 volume % or more and 18 volume % or less, the active material is doped with alkali metal using a dope solution containing alkali metal ions. In a manufacturing method for a power storage device, a negative electrode active material contained in a negative electrode active material layer of a negative electrode is doped with alkali metal using a dope solution containing alkali metal ions in an atmosphere with an oxygen concentration of 1 volume % or more and 18 volume % or less. After the doping with alkali metal, the negative electrode, a separator, and an electrode different from the negative electrode are sequentially stacked to form the electrode cell.

An electronic component includes an element body, an external electrode, and a resin film having electrical insulation properties. The element body includes a principal surface and a side surface adjacent to the principal surface. The external electrode includes a first electrode portion disposed on the principal surface and a second electrode portion disposed on the side surface. The resin film is disposed on the principal surface and is in contact with the principal surface. Each of the first electrode portion and the second electrode portion includes a conductive resin layer disposed on the element body. A conductive resin layer included in the first electrode portion is disposed on the resin film and is in contact with the resin film.

A capacitor component includes a body having a first surface and a second surface opposing each other and including a multilayer structure in which a plurality of dielectric layers are stacked and first and second internal electrodes are alternately disposed with respective dielectric layers interposed therebetween and exposed to the first surface and the second surface, respectively, first and second metal layers covering the first surface and the second surface and connected to the first and second internal electrodes, respectively, first and second ceramic layers covering the first and second metal layers, and first and second external electrodes covering the first and second ceramic layers and connected to the first and second metal layers to be electrically connected to the first and second internal electrodes, respectively.

A winder includes a winding mechanism, a chamber housing the winding mechanism, at least one vacuum pump, and a product case. The winding mechanism is configured to wind a belt-shaped raw film around a winding core. The belt-shaped raw film is composed of a plurality of electrodes and a plurality of separating films. The at least one vacuum pump is configured to suck air into the chamber. The product case is configured to house a plurality of winding products each formed by winding the raw film with use of the winding mechanism disposed in the chamber.

A winder includes a winding mechanism, a chamber housing the winding mechanism, at least one vacuum pump, and a product case. The winding mechanism is configured to wind a belt-shaped raw film around a winding core. The belt-shaped raw film is composed of a plurality of electrodes and a plurality of separating films. The at least one vacuum pump is configured to suck air into the chamber. The product case is configured to house a plurality of winding products each formed by winding the raw film with use of the winding mechanism disposed in the chamber.

Provided is a doping system in which an active material in a strip-shaped electrode precursor having a layer including an active material is doped with alkali metal. The doping system includes a doping tank, a conveying unit, a counter electrode unit, a connection unit, and a porous insulating member. The doping tank accommodates a solution including alkali metal ions. The conveying unit conveys the electrode precursor along a path passing through the inside of the doping tank. The counter electrode unit is accommodated in the doping tank. The connection unit electrically connects the electrode precursor and the counter electrode unit. The porous insulating member is disposed between the electrode precursor and the counter electrode unit, and is not in contact with the electrode precursor.