The present disclosure provides a surge protector device comprising an electrical connector for connecting said surge protector device to a current network, at least one metal oxide varistor (MOV) connected to said electrical connector; and a first containment unit at least partially filled with a medium having dielectric, heat resistance and elastic properties embedding said at least one MOV unit within said first containment unit, said containment unit having at least one opening; wherein upon failure of said at least one MOV unit due to a surge in said current network said opening allows expansion gases created by said at least one MOV unit to be discharged from said first containment unit. In another embodiment, the surge protector connects directing to an electrical board and discharges expansion gases therein.

A surge suppressor, comprising a Metal Oxide Varistor, MOV, connected to a current-conductive track and arranged for suppressing surges present on said current-conductive track, a temperature dependent component thermally coupled to said current-conductive track, wherein an electrical parameter of said temperature dependent component is dependent on temperature, control means arranged for providing a quantitative measure of a lifespan of said MOV based on fluctuations of said electrical parameter over time.

A surge suppressor, comprising a Metal Oxide Varistor, MOV, connected to a current-conductive track and arranged for suppressing surges present on said current-conductive track, a temperature dependent component thermally coupled to said current-conductive track, wherein an electrical parameter of said temperature dependent component is dependent on temperature, control means arranged for providing a quantitative measure of a lifespan of said MOV based on fluctuations of said electrical parameter over time.

Provided are a varistor forming paste, a cured product thereof, and a varistor, that can increase the degree of freedom in designing an electronic device, and can exhibit appropriate varistor characteristics. The varistor forming paste contains an epoxy resin (A), a curing agent (B), and a carbon aerogel (C).

Provided are a varistor forming paste, a cured product thereof, and a varistor, that can increase the degree of freedom in designing an electronic device, and can exhibit appropriate varistor characteristics. The varistor forming paste contains an epoxy resin (A), a curing agent (B), and a carbon aerogel (C).

Method for packaging electrical insulators (4) for high voltage or very high voltage, such as electrical line insulators made with a dielectric material chosen from glass or porcelain, and more specifically, electrical insulators with a protective hydrophobic silicone elastomer coating covering the surface of the electrical insulators, under vacuum or under inert gas.

In an embodiment a method for manufacturing a multilayer varistor includes providing a first ceramic powder for producing a first ceramic material and at least one second ceramic powder for producing a second ceramic material, wherein the ceramic powders differ from each other in concentration of monovalent elements X.sup.+ by 50 ppm≤Δc(X.sup.+)≤5000 ppm, wherein X.sup.+=(Li.sup.+, Na.sup.+, K.sup.+ or Ag.sup.+), and wherein Δc denotes a maximum concentration difference occurring between an active region and a near-surface region of the multilayer varistor, slicking of the ceramic powders and forming of green films, partially printing of a part of the green films with a metal paste to form inner electrodes, stacking printed and unprinted green films, laminating, decarbonizing and sintering the green films and applying outer electrodes.

In an embodiment a method for manufacturing a multilayer varistor includes providing a first ceramic powder for producing a first ceramic material and at least one second ceramic powder for producing a second ceramic material, wherein the ceramic powders differ from each other in concentration of monovalent elements X.sup.+ by 50 ppm≤Δc(X.sup.+)≤5000 ppm, wherein X.sup.+=(Li.sup.+, Na.sup.+, K.sup.+ or Ag.sup.+), and wherein Δc denotes a maximum concentration difference occurring between an active region and a near-surface region of the multilayer varistor, slicking of the ceramic powders and forming of green films, partially printing of a part of the green films with a metal paste to form inner electrodes, stacking printed and unprinted green films, laminating, decarbonizing and sintering the green films and applying outer electrodes.

A multilayer device and a method for producing a multilayer device are disclosed. In an embodiment a multilayer device includes a main body having at least two external electrodes, at least one first internal electrode; at least one second internal electrode, wherein each internal electrode is electrically conductively connected to an external electrode, a plurality of ceramic layers, wherein the ceramic layers comprise the internal electrodes and at least one dielectric layer, wherein, viewed along a stack direction of the ceramic layers, the dielectric layer being arranged between the internal electrodes, and wherein the dielectric layer is printed onto at least one sub-region of one of the ceramic layers.

A composite circuit protection device includes: a first positive temperature coefficient (PTC) component; a first voltage-dependent resistor (VOR); a second VOR; and a plurality of conductive leads that correspondingly connect to the first PTC component, the first VOR and the second VOR. The second VOR and the first PTC component are electrically connected in series, the first VOR and the second VOR are electrically connected in parallel, the first PTC component and the first VOR are electrically connected in parallel, and the first VOR has a varistor voltage greater than that of the second VOR as determined at 1 mA.