Integrated electrostatic discharge and overcurrent device
First Claim
Patent Images
1. An electrical circuit protection device, comprising:
- an overcurrent protection portion having a first substrate, a second substrate and a PTC element disposed between the first and second substrates, each of the first and second substrates having an outer surface;
a voltage variable material disposed on at least one of the outer surfaces of the substrates;
an overcurrent termination that electrically communicates with the overcurrent protection portion; and
an overvoltage termination that electrically communicates with the voltage variable material.
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Accused Products
Abstract
An electrical circuit protection device has an overcurrent protection portion and an overvoltage protection portion. The overcurrent protection portion has a surface. The overvoltage protection portion is disposed on the surface. In one preferred embodiment, the overcurrent portion includes a PTC device and the overvoltage portion includes a voltage variable material. A number of terminations are configured to connect the overcurrent protection portion and the overvoltage protection portion to a printed circuit board.
218 Citations
22 Claims
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1. An electrical circuit protection device, comprising:
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an overcurrent protection portion having a first substrate, a second substrate and a PTC element disposed between the first and second substrates, each of the first and second substrates having an outer surface;
a voltage variable material disposed on at least one of the outer surfaces of the substrates;
an overcurrent termination that electrically communicates with the overcurrent protection portion; and
an overvoltage termination that electrically communicates with the voltage variable material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 15, 16, 17)
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10. An electrical circuit protection device, comprising:
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an overcurrent protection portion having a surface;
a voltage variable material disposed on the surface;
an overcurrent termination that electrically communicates with the overcurrent protection portion; and
an overvoltage termination that electrically communicates with the voltage variable material;
wherein the overvoltage and overcurrent terminations are configured to electrically communicate on a printed circuit board with a Universal Serial Buss port or an Institute of Electrical and Electronics Engineers (“
IEEE”
) 1394 port.
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11. An electrical circuit protection device, comprising:
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an overcurrent protection portion having a surface;
a voltage variable material disposed on the surface;
an overcurrent termination that electrically communicates with the overcurrent protection portion; and
an overvoltage termination that electrically communicates with the voltage variable material;
wherein the device is provided in an 1812 package size.
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12. An electrical circuit protection device, comprising:
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an overcurrent protection portion having a surface;
a voltage variable material disposed on the surface;
an overcurrent termination that electrically communicates with the overcurrent protection portion; and
an overvoltage termination that electrically communicates with the voltage variable material;
wherein the device is provided in a 2029 package size.
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13. An electrical circuit protection device, comprising:
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an overcurrent protection portion having a surface;
a voltage variable material disposed on the surface;
an overcurrent termination that electrically communicates with the overcurrent protection portion; and
an overvoltage termination that electrically communicates with the voltage variable material;
wherein the device is provided in a 3425 package size.
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14. An electrical circuit protection device, comprising:
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an overcurrent protection portion having a surface;
a voltage variable material disposed on the surface;
an overcurrent termination that electrically communicates with the overcurrent protection portion; and
an overvoltage termination that electrically communicates with the voltage variable material;
wherein the voltage variable material includes a matrix of conductive and semiconductive particles.
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18. An electrical circuit protection device, comprising:
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an overcurrent protection portion having a surface;
a voltage variable material disposed on the surface;
an overcurrent termination that electrically communicates with the overcurrent protection portion;
an overvoltage termination that electrically communicates with the voltage variable material;
a common termination; and
a spark gap on the surface between the common termination and one of the overvoltage termination and the overcurrent termination, wherein the voltage variable material at least partially covers the spark gap. - View Dependent Claims (19, 20)
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21. An electrical circuit protection device, comprising:
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a first substrate having top and bottom surfaces and an electrode disposed on the top surface;
a second substrate having top and bottom surfaces and an electrode disposed on the bottom surface;
a PTC element positioned between the first and second substrates and electrically connected to the electrodes; and
a voltage variable material disposed on the top surface of the second substrate. - View Dependent Claims (22)
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Specification