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Over-current protection device and method for manufacturing the same

A technology for protecting components and manufacturing methods, applied in electrical components, resistor manufacturing, resistor components and other directions, can solve problems such as difficulty in meeting the requirements of handheld electronic products, inability to balance adhesion strength and overall component thickness reduction

Active Publication Date: 2014-02-12
POLYTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the requirements for adhesion strength and the thickness reduction of the overall components are often unable to be balanced by the current production methods, and it is difficult to meet the requirements of today's handheld electronic products

Method used

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  • Over-current protection device and method for manufacturing the same
  • Over-current protection device and method for manufacturing the same
  • Over-current protection device and method for manufacturing the same

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Embodiment Construction

[0029] In order to make the above-mentioned and other technical content, features and advantages of the present invention more obvious and understandable, the following specifically cites relevant embodiments, together with the attached drawings, for detailed description as follows:

[0030] refer to figure 1 , providing a PTC substrate 11, the PTC substrate 11 includes conductive members 13, 14 and a PTC material layer 12 stacked therebetween. In one embodiment, the PTC material layer 12 includes a crystalline polymer and conductive fillers dispersed in the crystalline polymer. Crystalline polymers can be selected from crystalline polyolefin polymers (such as high-density polyethylene, medium-density polyethylene, low-density polyethylene, polyethylene wax, ethylene polymer, polypropylene, polyvinyl chloride or polyvinyl chloride) Vinyl fluoride, etc.), copolymers of olefinic monomers and acrylic monomers (such as ethylene-acrylic acid copolymers, ethylene-acrylic copolymer...

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Abstract

An over-current protection device has a PTC device, first and second electrodes and an insulation layer. The PTC device comprises first and second electrically conductive members and a PTC layer laminated between the first and second electrically conductive members. The first and second electrodes are electrically connected to the first and second electrically conductive members, respectively. The insulation layer is disposed on a surface of the first electrically conductive member. The device is a stack structure extending along a first direction, and comprises at least one hole extending along a second direction substantially perpendicular to the first direction. The value of the covered area of the hole divided by the area of the form factor of the over-current protection device is not less than 2%, and the value of the thickness of the device divided by the number of the PIC devices is less than 0.7 mm.

Description

technical field [0001] The present invention relates to an overcurrent protection element, in particular to a thinned overcurrent protection element. Background technique [0002] Overcurrent protection elements are used to protect circuits from being damaged by overheating or excessive current flow. The overcurrent protection device usually includes two electrodes and a resistive material between the two electrodes. This resistance material has a positive temperature coefficient (Positive Temperature Coefficient; PTC) characteristic, that is, it has a low resistance value at room temperature, and when the temperature rises to a critical temperature or an excessive current is generated in the circuit, its resistance value can jump immediately Thousands of times or more, so as to suppress the passage of excessive current to achieve the purpose of circuit protection. When the temperature drops back to room temperature or there is no overcurrent on the circuit, the overcurren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/02
CPCH01C17/00H01C7/008H01C1/028H01C1/1406H01C7/02H01C17/02Y10T29/49085
Inventor 利文峯陈国勋曾郡腾沙益安吕明勋
Owner POLYTRONICS TECH
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