A surge protective device (SPD) module includes a varistor and an electrical conductor. The varistor includes a hole defined therein and extending through the varistor. The electrical conductor extends through the hole in the varistor.

The invention relates to an overvoltage protection device with leakage current cutoff, having a parallel connection of a first current branch and a second current branch, wherein the first current branch comprises a switching element and a first non-linear resistor element, and the second current branch comprises a securing element with signaling properties and a second non-linear resistor element and a complex resistor. Dependent on a state modification of the securing element with signaling properties, said switching element is switched.

A fuse element for an electric circuit, arranged on a circuit board of the electric circuit, has a surface area for fastening and establishing an electric contact on the circuit board, a first deforming area adjacent the surface area, a second deforming area connected to the first deforming area via a central area, the second deforming area including a contact area that abuts the circuit board, and a hook-shaped element insertable into an opening adjacent the contact area, the hook-shaped element is insertable into the opening by elastic deformation of the fuse element in the direction of the circuit board and, after insertion of the hook-shaped element into the opening and positive holding of the hook-shaped element on a lower surface of the circuit board, the first and second deforming areas exert an elastic force on the surface area in the direction away from the circuit board.

A novel temperature-triggered fuse device is configured to be activated at a designer-specified ambient temperature by utilizing wetting force among a pair of wetting material bays and a solder bridge or a solder ball. The solder bridge or the solder ball is typically positioned on top of the pair of wetting material bays separated by an electrically-insulated gap. Preferably, the wetting material bays are at least partly made of gold, nickel, or other elements suitable for generating an increased wetting force to the solder bridge or the solder ball upon increases in ambient temperature. The novel temperature-triggered fuse device can be integrated into various types of integrated circuits (IC's), or can function as a discrete fuse connected to one or more electronic components for robust protection from power surges and/or thermal runaway-related device malfunctions, meltdowns, or explosions. Various methods of producing the temperature-triggered fuse device are also disclosed herein.

A device for dissipating a surge includes at least three metal oxide varistors (MOVs). Each of the MOVs may be positioned adjacent to each other. Each of the MOVs may have two contact surfaces. Contact surfaces of adjacent MOVs are electrically connected together. The at least three MOVs include a first outer MOV, a second outer MOV, and at least one inner MOV positioned between the first outer MOV and the second outer MOV. The first outer MOV and the second outer MOV have a greater voltage at a given current than at least one of the at least one inner MOV. The device further includes a first connector electrically coupled to at least one of the at least three MOVs. The device further includes a second connector electrically coupled to at least another of the at least three MOVs.

The chip-type current fuse is configured to include a fuse element 5 formed between a first front electrode 3 and a second front electrode 4. The fuse element 5 includes: a first linear portion 5a that has an end connected to the first front electrode 3 and extends in a direction toward the second front electrode 4; a second linear portion 5b that has an end connected to the second front electrode 4 and extends in parallel to the first linear portion 5a in a direction toward the first front electrode 3; and an inclined linear portion 5c that links the first linear portion 5a and the second linear portion 5b to each other. The inclined linear portion 5c is connected at an acute angle to each of the first linear portion 5a and the second linear portion 5b.

A control device suitable for use in a vehicle includes a circuit board and a thermal fuse holder including a removable spacer element and a plurality of breaker elements. The thermal fuse holder is attached at a terminal structure and, when the terminal structure is attached to the circuit board, the breaker elements engage the removable spacer element to hold the breaker elements at the circuit board. After terminals of the terminal structure and the breaker elements are soldered at the circuit board, the removable spacer element is removed from the thermal fuse holder, whereby the breaker elements are held at the circuit board via solder joints and are biased away from the circuit board. When the temperature at a respective solder joint exceeds a threshold temperature that melts the solder, the respective breaker element moves away from the circuit board to break the electrical connection at the solder joint.

An electrical protection component having a short-circuit device is disclosed. In an embodiment an electrical protection component includes a short-circuiting device including a surge arrester including electrodes and a thermal short-circuiting device including a clip, a first section of which is snapped onto the surge arrester and a second section of which comprises a short-circuiting link, wherein the short-circuiting link of the clip is spaced apart from at least one of the electrodes by a fusible element, wherein the short-circuiting link electrically conductively connects two of the electrodes to one another when the fusible element melts, and wherein the fusible element has a melting point of at least 300 degrees Celsius.

A circuit protection device includes a metal oxide varistor (MOV), a spring terminal and a thermal disconnect coupling the spring terminal to the MOV. A gas discharge tube (GDT) is coupled to the MOV. The spring terminal is biased such that upon occurrence of an overvoltage condition, heat generated by the MOV melts the thermal disconnect and allows the spring terminal to be displaced away from the MOV, thereby creating an opening circuit.

A reflowable thermal fuse comprises a conduction element with first and second elastic portions, a sensor, a restraining element, a heating element and mounting pads. The first elastic portion is adapted to apply force on the conduction element in an activated state of the thermal fuse. The sensor is in mechanical communication with the first elastic portion of the conduction element. The restraining element is adapted to secure the second elastic portion of the conduction element and thereby prevent the second elastic portion from applying force on the conduction element in an installation state of the thermal fuse. Application of an activating current through the heating element causes heat generated and transferred to the restraining element and makes the restraining element to lose resilience, thereby releasing the second elastic portion and placing the thermal fuse in the activated state. The sensor loses its ability to hold the first elastic portion in place and allows the conduction element to open during a subsequent fault condition.