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7623020 |
Multilayer ceramic electronic component
A multilayer ceramic electronic component includes a multilayer body, a first internal electrode provided in the multilayer body, and a second internal electrode provided in the multilayer body and...
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7623019 |
Varistor with three parallel ceramic layer
The present invention discloses a varistor which comprises three parallel ceramic layers. Each of the ceramic layers has two electrodes on both sides thereof. Four leads are properly arranged...
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7618550 |
Polymer compound with nonlinear current-voltage characteristic and process for producing a polymer compound
The polymer compound contains a polymer matrix and a filler embedded in the matrix. The filler comprises two filler components with nonlinear current-voltage characteristics deviating from one...
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7612648 |
Disc varistor and method of manufacturing the same
Disclosed herein are a disc varistor having a capability to absorb a double amount of surge and a method of manufacturing the varistor. The varistor includes a disc-shaped first ceramic body having...
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7609141 |
Flexible circuit having overvoltage protection
A first voltage variable material (“VVM”) includes an insulative binder, first conductive particles with a core and a shell held in the insulating binder and second conductive particles without...
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7605352 |
Method for sorting positive temperature coefficient (PTC) elements
In a method for sorting PTC elements having different resistance-temperature characteristics, a predetermined voltage that allows a current to sufficiently decay is applied to each of PTC elements...
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7598840 |
Metal oxide varistor having thermal cut-off function
A MOV includes a MOV body, a first lead, a thermal cut-off fuse, a second lead and a silver electrode area. The MOV of the present invention employs the silver electrode area formed on and...
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7567416 |
Transient voltage protection device, material, and manufacturing methods
A transient voltage suppression device includes a dielectric layer defining a receptacle for a variable impedance material proximate a gapped electrode. Methods for manufacturing the device and for...
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7558042 |
Devices and system for electrostatic discharge suppression
A electrostatic discharge suppression device including an electrostatic discharge reactance layer having a first side and a second side, a first electrode coupled to the first side and comprising a...
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7541910 |
Multilayer zinc oxide varistor
A multilayer zinc oxide varistor without bismuth oxide system ingredients, and having variable breakdown voltages by controlling the thickness of the ceramic material; the varistor is bismuth-free...
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7525409 |
Method of manufacturing a varistor
A varistor including a varistor body with two parallel end faces made of a material that contains one or more metal oxides, and at least one electrode made of an electrically conductive electrode...
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7453681 |
Metal oxide varistor with a heat protection
A metal oxide varistor integrally formed with a heat protection structure that will automatically go to open circuit in conditions of overheating due to sustained over-voltages. The metal oxide...
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7453368 |
Surge protector life cycle monitor system and method
A system and method are provided for determining an expected life of an electric surge protection component. The system and method monitors preferably each surge that an electric surge protection...
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7423512 |
Zinc oxide particles
A collection of zinc oxide nanoparticles have been produced by laser pyrolysis. The zinc oxide nanoparticles have average particle diameters of less than about 95 nm and a very narrow particle size...
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7375943 |
Tri-phase surge protector and its manufacturing method
A tri-phase surge protector comprises a first zinc oxide ceramic body; a first electrode layer on a surface of the first zinc oxide ceramic body and having a first electrode, and the first...
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7372357 |
Varistor body and varistor
A preferred varistor body 2 has a structure of alternately laminated internal electrode layer 12 and varistor layer 14 . The varistor layer 14 has a composition containing ZnO as the main...
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7320762 |
Polymer compound with nonlinear current-voltage characteristic and process for producing a polymer compound
The polymer compound contains a polymer matrix and a filler embedded in the matrix. The filler comprises two filler components with nonlinear current-voltage characteristics deviating from one...
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7283032 |
Static electricity countermeasure component
It is possible to realize an electrostatic discharge protection component having a very small electrostatic capacity suited to a high-frequency equipment and comprising a ceramic insulating...
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7277003 |
Electrostatic discharge protection component
An electrostatic discharge protection component of an array type includes ceramic insulating substrate 12 ; varistor region 10 which is pasted on ceramic insulating substrate 12 and then is...
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7272885 |
Method of manufacturing surge arrestor
The present invention relates to a method of manufacturing surge arrestors, the method including stacking varistors; and forming a coating of composite material on the stack. Between these steps,...
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7258819 |
Voltage variable substrate material
The present invention provides an improved voltage variable material (“VVM”). More specifically, the present invention provides an improved printed circuit board substrate, an improved device...
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7218492 |
Devices and systems for electrostatic discharge suppression
A device ( 10 ) for suppressing electrostatic discharge comprises first and second multilayer structures ( 14, 16 ) surrounding an electrostatic discharge reactance layer ( 12 ), the resistance of...
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7202770 |
Voltage variable material for direct application and devices employing same
The present invention provides overvoltage circuit protection. Specifically, the present invention provides a voltage variable material (“VVM”) that includes an insulative binder that is...
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7183891 |
Direct application voltage variable material, devices employing same and methods of manufacturing such devices
A voltage variable material (“VVM”) including an insulative binder that is formulated to intrinsically adhere to conductive and non-conductive surfaces is provided. The binder and thus the VVM...
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7167352 |
Multilayer chip varistor
A multilayer chip varistor comprises a multilayer body and a pair of external electrodes formed on the multilayer body. The multilayer body has a varistor section and a pair of outer layer sections...
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7132922 |
Direct application voltage variable material, components thereof and devices employing same
A voltage variable material (“VVM”) including an insulative binder that is formulated to intrinsically adhere to conductive and non-conductive surfaces is provided. The binder and thus the VVM...
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7099131 |
Surge absorber and surge absorber array
A surge absorber includes a laminated compact of a first ceramic green sheet having a first internal electrode film extending to both sides thereof, a second ceramic green sheet having an second...
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7095310 |
Nonlinear resistor and method of manufacturing the same
A non-linear resistor comprises a sintered body having zinc oxide as a main component, a side-surface high resistance layer arranged at a side-surface of the sintered body, and an electrode...
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7075406 |
Station class surge arrester
A station class surge arrester includes a module assembly. The module assembly includes at least one metal oxide varistor (MOV) disk and a pre-impregnated composite that is applied around the at...
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7075405 |
Multilayer chip varistor and method of manufacturing the same
The multilayer chip varistor of the present invention includes a varistor body including a plurality of varistor layers and inner electrodes arranged to sandwich each of the varistor layers,...
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7075404 |
Porcelain composition for varistor and varistor
A varistor is provided which can be driven at a low voltage, has a small leak current, and can realize a high ESD resistance and a high surge resistance. The varistor is formed using a ceramic...
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7071810 |
Over-current protection apparatus
An over-current protection apparatus comprises a plurality of over-current protection devices and a bonding sheet. Each over-current protection device comprises at least one current-sensitive...
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7049926 |
Single and multi layer variable voltage protection devices and method of making same
Disclosed is a variable voltage protection device for electronic devices which in one aspect comprises a thin layer of neat dielectric polymer or glass positioned between a ground plane and an...
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7015787 |
Voltage-dependent resistor and method of manufacturing the same
A voltage-dependent resistor includes a composite of at least one semiconductive ceramic layer mainly containing ZnO and at least one metal oxide layer containing at least one of strontium and...
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7015786 |
Mechanical reinforcement to improve high current, short duration withstand of a monolithic disk or bonded disk stack
A mechanical reinforcement for an electrical apparatus has at least one electrical element with an outer surface and a reinforcing structure attached to the outer surface. The electrical element...
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7012501 |
Electrical multi-layer component
An electrical component includes a base body that contains dielectric layers. The dielectric layers are superimposed and contain ceramic. The component also includes outer contacts on an exterior...
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7012500 |
GFCI with enhanced surge suppression
An MOV element is physically and electrically connected to a heat sensitive material which changes from a low impedance path to a high impedance path, such as a spark gap, when the temperature of...
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6995649 |
Variable resistor apparatus formed utilizing nanotechnology
A variable resistor apparatus includes a plurality of nanoparticles disposed between two terminals, wherein the plurality of nanoparticles provides an electrical resistance. An electric field...
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6981319 |
Method of manufacturing devices to protect election components
Devices capable of protecting electronic components during the occurrence of a disturbance event using printed circuit board manufacturing techniques. A three (3) layer structure is formed...
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6943659 |
Coated varistor
A varistor includes a varistor element, a first layer which is porous on the varistor element, and a second layer on th first coating. The thickness t (mm) of the second layer is not smaller than...
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6935015 |
Method of producing thermistor chips
Thermistor chips are produced by preparing thermistor bodies each having outer electrodes formed on its end parts and dipping them in a solvent so as to melt away exposed surface portions of the...
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6802116 |
Method of manufacturing a metal-oxide varistor with improved energy absorption capability
A method of manufacturing a metal-oxide varistor with improved energy absorption capability. Electrodes are arranged making contact with the end surfaces of the varistor, these end surfaces being...
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6697242 |
Main element of a surge protector device
The present invention is directed to a main element of a surge protector device and its fabrication method which uses breakdown phenomenon of a single high resistive film. A breakdown voltage and a...
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6693508 |
Protection of electrical devices with voltage variable materials
An arrangement of voltage variable materials for the protection of electrical components from electrical overstress (EOS) transients. A device having a plurality of electrical leads, a ground plane...
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6661332 |
Press-type varistor switch
A press-type varistor switch is disclosed. A center of an upper cover is formed with a round hole. A head of a silicide cap is embedded into the round hole. Opposite sides of the seat are formed...
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6627119 |
Chip type varistor and method of manufacturing the same
There is provided a varistor having high surge resisting capability in spite of its small size and a method of manufacturing the same. The varistor is mainly composed of zinc oxide and contains a...
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6627100 |
Current/voltage non-linear resistor and sintered body therefor
A current/voltage non-linear resistor comprises a sintered body having a main component of ZnO, an electrode applied to a surface of the sintered body and an insulation material applied to another...
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6611192 |
Voltage-nonlinear resistor, method for making the same, and varistor using the same
A varistor includes a voltage-nonlinear resistor and varistor electrodes provided on the upper and lower surfaces of the voltage-nonlinear resistor. The voltage-nonlinear resistor is primarily...
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6608547 |
Low capacity multilayer varistor
The invention is directed to a low-capacitance multi-layer varistor having a ceramic body and two terminals that are applied on the ceramic body spaced from one another. The ceramic body is...
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6542067 |
Barium titanate semiconductor ceramic powder and laminated semiconductor ceramic device
A compact and low resistance laminated semiconductor ceramic device which is provided with a positive resistance-temperature characteristic and has a broad resistance-change range and a high...
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