A transient electronic device includes electronic elements (e.g., an SOI- or chip-based IC) and a trigger mechanism disposed on a frangible glass substrate. The trigger mechanism includes a switch that initiates a large trigger current through a self-limiting resistive element in response to a received trigger signal. The self-limiting resistive element includes a resistor portion that generates heat in response to the trigger current, thereby rapidly increasing the temperature of a localized (small) region of the frangible glass substrate, and a current limiting portion (e.g., a fuse) that self-limits (terminates) the trigger current after a predetermined amount of time, causing the localized region to rapidly cool down. The frangible glass substrate is engineered such that a stress profile produced by the rapid heating/cooling of the localized region generates an initial fracture force that subsequently propagates throughout the glass substrate, whereby sufficient potential energy is released to powderize the electronic elements.

A fuse including a first housing part and a second housing part that are joined together to define a cavity, a fuse element disposed within the cavity, a first terminal extending from a first end of the fuse element and out of the housing, and a second terminal extending from a second end of the fuse element and out of the housing, the housing having a vent channel extending from an outer surface of the housing to the cavity for allowing vapor to escape from the cavity.

A fuse control system and method using a defective mode detection, in which an overcurrent protective fuse and a signal fuse capable of performing a function under various conditions in order to protect a circuit are integrated. Thus, it is possible to protect the circuit even in states such as overvoltage, a high temperature, a low temperature, and other dangerous states in addition to an overcurrent state and a short-circuited state. In addition, it is possible to reduce a wide design space and design cost which result from various kinds of fuses being used in series, and to simplify a circuit configuration. Consequently, since circuit resistance is reduced, it is possible to have a positive influence on a battery.

A protection device comprises a substrate, a fusible element, a flux and an insulating cover. The fusible element is disposed on the substrate and connects to a power line of an apparatus to be protected. The flux is disposed on the fusible element. The insulating cover is secured on the substrate to form a room for receiving the fusible element. The insulating cover has a bottom surface facing the substrate, and a plurality of protrusions are formed and distributed on the bottom surface to hold the flux in place.

A pattern fuse includes a lower film layer, an adhesive layer stacked on the lower film layer, a circuit pattern made of a conductive material and provided on the adhesive layer, an upper film layer stacked on the adhesive layer and the circuit pattern and a coating layer configured to cover the opening of the upper film layer, wherein the coating layer includes a flame retardant material. The upper film layer has an opening formed therein that is configured to allow a part or the entirety of the circuit pattern to be exposed therethrough. A method of manufacturing the pattern fuse is also provided.

One example device for overcurrent protection for wireless power receivers includes a wireless power antenna comprising a wire coil; a conditioning circuit electrically coupled to the wireless power antenna to receive an electric power signal from the wireless power antenna; a temperature-sensitive fuse electrically coupled between the wireless power antenna and the conditioning circuit and configured to electrically decouple the wireless power antenna from the conditioning circuit in response to being blown; and a thermal energy source configured to generate thermal energy based on an electrical signal from an output of the conditioning circuit, the thermal energy source positioned proximate the temperature-sensitive fuse.

One example device for overcurrent protection for wireless power receivers includes a wireless power antenna comprising a wire coil; a conditioning circuit electrically coupled to the wireless power antenna to receive an electric power signal from the wireless power antenna; a temperature-sensitive fuse electrically coupled between the wireless power antenna and the conditioning circuit and configured to electrically decouple the wireless power antenna from the conditioning circuit in response to being blown; and a thermal energy source configured to generate thermal energy based on an electrical signal from an output of the conditioning circuit, the thermal energy source positioned proximate the temperature-sensitive fuse.

An arc-preventing fast-breaking surge protection device is disclosed. In one of implement, surge protection device includes an arc-preventing assembly consisted of an arc-preventing catapult and an elastic element, comprising a voltage sensitive assembly, a response switch assembly, a thermosensitive element, an inner shell and an outer cover. The voltage sensitive assembly is tightly coupled with the response switch assembly. When the instantaneous surge voltage in circuits causes the voltage sensitive assembly to continuously heat up due to the fault short-circuit current, the response switch assembly causes the arc-prevent assembly to be catapulted and separated by the thermal coupling response of the thermosensitive element, meanwhile the response switch assembly is conceal by the arc-preventing assembly, thus preventing the arc generated when the switch is s catapulted and separated from forming a short-circuit and an overload, thus effectively avoiding fire and explosion hazards and further preventing secondary damage of electronic devices.

A micro-fuse assembly includes a substrate, a number of thin-film micro-fuses on the substrate, and a topping wafer configured to sealingly engage to at least one of the substrate or the thin-film micro-fuses to define a cavity therebetween. The cavity is configured to encapsulate the thin-film micro-fuses within an inert environment sealed within the cavity. A method of encapsulating a micro-fuse assembly within an inert environment using a topping wafer is also disclosed.

An example interruption switch includes a casing surrounding a contact unit, defining a current path through the switch, which has two connection contacts, a separation region and a sabot. A current supplied to the contact unit may be interrupted via the one of the connection contacts and discharged via the other connection contact. At least one chamber in the switch, delimited by the separation region, is substantially filled with a vaporizable medium in contact with the separation region. The separation region is separable into at least two parts through the supplied current when a threshold amperage is exceeded. An electric arc forming between the two parts at least partially vaporizes the vaporizable medium, and a gas pressure to which the sabot is exposed forms. The sabot moves, in the casing, from a starting to an end position, achieving an insulation spacing between the connection contacts.