This application relates to an electrode plate, an electrochemical device and a safety coating. The electrode plate comprises a current collector, an electrode active material layer and a safety coating disposed between the current collector and the electrode active material layer. The safety coating layer comprises fluorinated polyolefin and/or chlorinated polyolefin polymer matrix, a conductive material and an inorganic filler. The electrode plate can quickly cut off the circuit when the electrochemical device (for example, a capacitor, a primary battery, or a secondary battery) is in a high temperature condition or an internal short circuit occurs, and thus it may improve the high temperature safety performance of the electrochemical device.

A component having an active volume, the active volume not being centrally positioned along a height of the component, and/or not being centrally positioned along a width of the component. Use of the component is also disclosed. Further aspects relate to a use of the component and to a component. The component can be an NTC thermistor or a PTC thermistor or a temperature measurement element. Use of the component for monitoring a temperature of a battery or in a vehicle is also disclosed.

Internal electrodes, a protective film, and protective films covering the top parts of internal electrode sides of lead wires are formed on a top surface of a substrate of a temperature sensor element, thereby making the overall shape a quadrangular prism and the transverse cross-section nearly a square even at any portion in the axial direction. A heating part of the temperature sensor element is provided near the center along the length, the height, and the width of the element, thereby preventing deviation of heat generation and stabilizing heat release to the lead wires. This allows the temperature sensor element to suppress fluctuation in detected temperatures due to mounting angle.

A resistor which is able to have a reduced thickness for an insulating substrate and in which occurrence of cracking is able to be suppressed during production of the insulating substrate, the production of the resistor and mounting of the substrate, and in which the safety of a medical device is increased by forming the insulating substrate using a biocompatible material; and a temperature sensor are provided. This resistor is provided with: an insulating substrate that has a bending strength of 690 MPa or more and a thickness of 10 to 100 m; a resistive film that is formed on the insulating substrate; at least a pair of electrode layers, that are electrically connected to the resistive film; and a protective film that covers a region where the resistive film is formed, while forming exposure portions so that at least parts of the electrode layers are exposed therein.

A chip electronic component includes a ceramic body that includes a semiconductor ceramic including an oxide including Ti and Ba, and a solid metal electrode at an end of the ceramic body and in ohmic contact with the ceramic body. The chip electronic component satisfies: A/V?3.3 (mm.sup.2/mm.sup.3), where A (mm.sup.2) is a surface area of the solid metal electrode, and V (mm.sup.3) is a volume of the ceramic body, and a film stress of the solid metal electrode is about 140 MPa or more.

A hybrid device, comprising: a first electrode, disposed on a first side of the hybrid device, a second electrode, disposed on a second side of the hybrid device, opposite the first side. The hybrid device may further include at least one layer, disposed between the first electrode and the second electrode, the at least one layer comprising a negative temperature coefficient material and a plurality of conductive particles, wherein the hybrid device exhibits a positive temperature coefficient characteristic and a negative temperature coefficient characteristic.

Provided is a thin-film resistor that has a higher resistance value than the conventional thin-film resistors while retaining excellent TCR characteristics. The thin-film resistor includes a substrate, a pair of electrodes formed on the substrate, and a resistive film connected to the pair of electrodes. The resistive film includes a first resistive film and a second resistive film, the second resistive film having a different TCR from that of the first resistive film, and each of the first resistive film and the second resistive film contains Si, Cr, and N as the main components.

A surface mountable over-current protection device comprises a PTC material layer, first and second conductive layers, left and right electrodes, left and right conductive members, and left and right insulating members. The PTC material layer comprises a left notch at a left end and a right notch at a right end. The first conductive layer comprises a primary portion disposed on an upper surface of the PTC material layer and a secondary portion extending over the left notch, and the second conductive layer comprises a primary portion disposed on a lower surface of the PTC material layer and a secondary portion extending over the underside of the right notch. The left conductive member connects to the left electrode and the first conductive layer and isolates from the second conductive layer. The right conductive member connects to the right electrode and the second conductive layer and isolates from the first conductive layer. The left and right insulating members are disposed in the left and right notches, respectively. The PTC material layer is not in direct contact with the left and right conductive members, and the primary portion and the secondary portion of the first or second conductive layer have different thicknesses.

The present invention provides a protection device which includes: a PTC laminar element which is formed of an insulation resin and has at least one throughhole; electrically conductive metal thin layers which are positioned on each of main surfaces of the laminar element, and a fuse layer which is positioned on a side surface defining at least one of said at least one throughhole and electrically connects the electrically conductive metal thin layers which are positioned on each of main surfaces of the laminar element. The protection device of the present invention allows a larger amount of a current to flow therethrough and can provide a protection from an excessive current.

A positive temperature coefficient ceramic thermistor element includes a sintered thermosensitive ceramic piece that uses lead barium titanate as a base, as well as metal ohmic electrodes which are positioned on two side surfaces of the thermosensitive ceramic piece. The thermistor element has a microporous channel barrier layer, and includes a glass sealing layer which wraps the outer surface of the thermosensitive ceramic piece, or an organic matter sealant which fills and blocks micro-pores in the surfaces of the metal ohmic electrodes combined on the two side surfaces of the thermosensitive ceramic piece and, at the same time, blocks gaps in the surfaces of areas, that do not have the metal ohmic electrodes, of a peripheral edge of the thermosensitive ceramic piece.