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Chip type thermistor and resistance value adjustment method thereof

A thermistor, chip technology, applied in resistance terminals/electrodes, resistors with negative temperature coefficients, resistors with positive temperature coefficients, etc., can solve the problem of reducing the resistance value of resistance and reducing the resistance value of thermistor , the inability to accurately adjust the resistance of the chip thermistor, etc., to achieve the effect of saving production costs and simplifying the process

Active Publication Date: 2014-03-12
GUILIN UNIV OF ELECTRONIC TECH
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  • Description
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  • Application Information

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Problems solved by technology

The invention patent with the publication number CN1479325 discloses a method of reducing the resistance value of the chip thermistor by stacking sheets. The essence is to reduce the resistance value of the thermistor by designing the electrodes into a comb pattern. However, this method cannot accurately adjust the resistance of the chip thermistor

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  • Chip type thermistor and resistance value adjustment method thereof
  • Chip type thermistor and resistance value adjustment method thereof
  • Chip type thermistor and resistance value adjustment method thereof

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Embodiment Construction

[0023] exist figure 1 In the illustrated embodiment, the chip thermistor of the present invention includes a chip thermosensitive ceramic 1, a pair of electrodes arranged on the surface of the chip thermosensitive ceramic 1, that is, the first electrode 2 and the second electrode 3, and a metallic pattern for resistance adjustment electrically connected to the second electrode 3; the first electrode 2 includes a first branch 2a and a second branch 2b having the same structure, and the first branch 2a and the second branch 2b are branches with repeated concave-convex structure features, the concave part of the first branch 2a is directly opposite to the concave part of the second branch 2b, and the convex part of the first branch 2a is also directly opposite to the convex part of the second branch 2b The second electrode 3 includes an I-shaped branch 3a with overlapping "I"-shaped structural features, and the two ends of the horizontal ends of the I-shaped branch 3a are respect...

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Abstract

The invention discloses a chip type thermistor and a resistance value adjustment method thereof. The chip type thermistor comprises a pair of electrodes arranged on the surface of a chip type thermal sensitive ceramic, and a metal pattern extending from at least one of the electrodes and used for adjusting the resistance value, wherein the electrodes comprise a first electrode and a second electrode, the first electrode comprises a first branch and a second branch both having repeated concave-convex structure characteristics, the second electrode comprises an I-shaped branch having an overlapped I-shaped structure characteristic, the two ends of the horizontal end of the I-shaped branch are respectively inserted into a concave part of the first branch and a concave part of the second branch on the first electrode, the metal pattern is provided with at least one rough adjustment welding end and at least one fine adjustment welding end, and the rough adjustment welding end is arranged in an area of the metal pattern corresponding to a convex part of the first branch and / or the second branch on the first electrode. The chip type thermistor provided by the invention can achieve the functions of rough adjustment and fine adjustment of the resistance value at the same time.

Description

technical field [0001] The invention relates to a chip-type thermistor and a method for adjusting its resistance value, belonging to the technical field of electronic ceramic materials. Background technique [0002] Common chip thermistors mainly include positive temperature coefficient (PTC) thermistors and negative temperature coefficient (NTC) thermistors, which are widely used in current limiting, temperature detection, temperature compensation, constant temperature heating and other fields. Room temperature resistance is one of the important performance parameters of the thermistor. According to its application requirements, the smaller the room temperature resistance, the better. At present, reducing the room temperature resistance is one of the difficulties and hot spots in the research field of thermistors. [0003] The research on reducing the room temperature resistance of thermosensitive ceramics mainly focuses on how to reduce the room temperature resistivity of...

Claims

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Application Information

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IPC IPC(8): H01C7/02H01C7/04H01C1/14
Inventor 李旭琼骆颖张廷玖陈国华袁昌来马家峰
Owner GUILIN UNIV OF ELECTRONIC TECH
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