Over-current protection device
US-2024387080-A1 · Nov 21, 2024 · US
Surface mountable over-current protection device
US8937525B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8937525-B2 |
| Application number | US-201313901100-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 23, 2013 |
| Priority date | Oct 31, 2012 |
| Publication date | Jan 20, 2015 |
| Grant date | Jan 20, 2015 |
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- Title
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Abstract
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A surface mountable over-current protection device having upper and lower surfaces comprises a PTC device, first and second electrodes, and first and second circuits. The PTC device comprises a PTC material layer and first and second conductive layers. The PTC material layer is disposed between the conductive layers and comprises crystalline polymer and conductive filler dispersed therein. The first electrode comprises a pair of first metal foils, whereas the second electrode comprises a pair of second metal foils. The first circuit connects the first electrode and conductive layer, and has a first planar line extending horizontally. The second circuit connects the second electrode and conductive layer, and has a second planar line extending horizontally. At least one of the planar lines has a thermal resistance sufficient to mitigate heat dissipation by which the over-current protection device undergoes a test at 25° C. and 8 amperes can trip within 60 seconds.
First claim
Opening claim text (preview).
We claim: 1. A surface-mountable over-current protection device being a substantially rectangular cuboid having upper and lower surfaces, a first lateral surface, a second lateral surface, a first end surface and a second end surface, the first and second lateral surfaces and the first and second end surfaces interconnecting the upper and lower surfaces; the over-current protection device comprising: a PTC device comprising a PTC material layer, a first conductive layer and a seco…
Assignees
Inventors
Classifications
- H01C1/1406Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H01C17/00Primary
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8937525B2 cover?
- A surface mountable over-current protection device having upper and lower surfaces comprises a PTC device, first and second electrodes, and first and second circuits. The PTC device comprises a PTC material layer and first and second conductive layers. The PTC material layer is disposed between the conductive layers and comprises crystalline polymer and conductive filler dispersed therein. The …
- Who is the assignee on this patent?
- Tseng Chun Teng, Wang David Shau Chew, Su Chi Jen, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H01C1/1406. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 20 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).