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Thermistor element

A thermistor element and resistance element technology, applied in the direction of resistors with negative temperature coefficient, resistors with positive temperature coefficient, etc., can solve the problem of poor heat transfer, unable to increase the maintenance current, low sensitivity to ambient temperature, etc. Problems, achieve the effect of improving the appearance, increasing the maintenance current, and increasing the sensitivity

Active Publication Date: 2013-05-15
POLYTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of component size and poor heat transfer, the hold current of the product cannot be increased.
In addition, due to the high thermal insulation of the components, it may also cause the problem of low sensitivity to ambient temperature

Method used

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Examples

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Embodiment Construction

[0047] In order to make the above-mentioned and other technical contents, features, and advantages of the present invention more obvious and easy to understand, the following specific examples are given, and in conjunction with the accompanying drawings, detailed descriptions are as follows:

[0048] Figure 1A A schematic diagram of the thermistor according to the first embodiment of the present invention is shown. Figure 1B A top view of the thermistor element shown in FIG. 1 is shown. The thermistor 10 includes a sheet-type resistive element 11 , a first insulating layer 15 , a second insulating layer 16 , a first electrode 17 and a second electrode 18 . The sheet-type resistive element 11 includes a first conductive member 12, a second conductive member 13 and a polymer material layer 14, wherein the polymer material layer 14 is stacked between the first conductive member 12 and the second conductive member 13, which contains Conductive particles with positive or negativ...

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Abstract

The invention discloses a thermistor element which comprises a sheet type resistor element, a first insulation layer, a first electrode, a second electrode and a first heat conduction layer, wherein the sheet type resistor element comprises a first conductive member, a second conductive member and a polymer material layer overlapped between the first conductive member and the second conductive member, and the polymer material layer has a positive or negative temperature coefficient characteristic; the first insulation layer is arranged on the first conductive member, the first electrode is electrically connected with the first conductive member; and the second electrode is electrically connected with the second conductive member and is electrically isolated from the first electrode, and the first heat conduction layer is arranged on the surface of the first insulation layer and has the heat conduction rate of at least 30W / mK and is 15-250micrometers thick. According to the thermistor element, the heat conduction efficiency can be greatly increased, and the maintaining current of a product is improved.

Description

technical field [0001] The present invention relates to surface mount (SMD) variable thermistor elements made of conductive polymer materials, such as positive temperature coefficient (PTC) elements and negative temperature coefficient (NTC) elements, which can be applied to printed circuit boards (PCBs). ), the current protection and the sensing of abnormal temperature environment have been done. Background technique [0002] Since the resistance of the conductive composite material with positive temperature coefficient (PTC) characteristics is sensitive to temperature changes, it can be used as a material for current sensing components, and has been widely used in overcurrent protection components or circuit components. superior. Since the resistance of the PTC conductive composite material can be maintained at a very low value at normal temperature, the circuit or battery can function normally. However, when the circuit or battery experiences over-current or over-temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/02H01C7/04
Inventor 沙益安曾郡腾王绍裘
Owner POLYTRONICS TECH
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