CN203456212U - NTC (Negative Temperature Coefficient) thermosensitive resistor for mounting surfaces of SMD (surface mounted device) - Google Patents
NTC (Negative Temperature Coefficient) thermosensitive resistor for mounting surfaces of SMD (surface mounted device) Download PDFInfo
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- CN203456212U CN203456212U CN201320432799.2U CN201320432799U CN203456212U CN 203456212 U CN203456212 U CN 203456212U CN 201320432799 U CN201320432799 U CN 201320432799U CN 203456212 U CN203456212 U CN 203456212U
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- thermosensitive resistor
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Abstract
The utility model relates to an NTC (Negative Temperature Coefficient) thermosensitive resistor for mounting surfaces of an SMD (surface mounted device). The NTC thermosensitive resistor comprises a substrate body, wherein an insulating film is arranged on the substrate body, a thermosensitive resistor chip is arranged in the substrate body, a mounting hole is formed in the middle of the substrate body, radiating slots are formed in two sides of the mounting hole, and ceramic bars are arranged among the radiating slots. According to the NTC thermosensitive resistor, the insulating film is arranged on the substrate body, the radiating slots are formed in two sides of the mounting hole, and the ceramic bars are arranged among the radiating slots, so that the insulating performance and the radiating effect of the substrate body can be effectively improved, the function of the thermosensitive resistor on protecting other electronic products can be enhanced, and the service life of the thermosensitive resistor can be prolonged.
Description
Technical field
The utility model relates to thermistor technical field, is specially a kind of for mounting the NTC themistor on SMD surface.
Background technology
Thermistor is the resistance value a kind of resistor very responsive to temperature, is also semiconductor thermistor device.It can be made by semi-conducting materials such as monocrystalline, polycrystalline and glass, plastics, this resistor has a series of special electrical properties, the most basic characteristic is that its resistance variation with temperature has very significant variation and volt-ampere curve to be non-linear, is widely used in office automation communication equipment, mobile phone, battery of mobile phone, LCD temperature-compensating and field of medical device.Yet at present for mounting SMD (Surface Mounted Devices; surface mount device) a little less than its insulation property of thermistor on surface; and power circuit easily produces huge surge current in the moment of start; thermistor is surge current suppression in time; thermistor is along with the prolongation of operating time is always under higher temperature environment simultaneously; producing a large amount of heats cannot discharge in time; cause thermistor because of high temperature aging at loading, to lose other electronic product functions of protection, and shorten the useful life of resistor.
Utility model content
It is a kind of for mounting NTC (the Negative Temperature Coefficient negative temperature coefficient) thermistor on SMD surface, to solve the shortcoming in above-mentioned background technology that the technical problem that the utility model solves is to provide.
The technical problem that the utility model solves realizes by the following technical solutions:
For mounting the NTC themistor on SMD surface, comprise substrate body; Wherein, in described substrate body, be provided with dielectric film, in described substrate body, thermistor chip be installed, in the middle of described substrate body, be provided with mounting hole, described mounting hole both sides are respectively arranged with radiating groove, between described radiating groove, are provided with ceramic rod.
In the utility model, described substrate body is that metal material is made.
In the utility model, described thermistor chip is NTC thermistor, effectively suppresses the surge current producing in power circuit.
In the utility model, described ceramic rod is used for reducing thermistor chip overcurrent and flows through, and improves the resistance to current capability of thermistor chip; Described radiating groove is discharged in time for thermistor is produced to a large amount of heats, improves the function that thermistor is protected other electronic products, extends the useful life of thermistor.
In the utility model, in described substrate body, thermistor chip is installed, the resistance stabilization of described thermistor chip, and noise is low, and loss is low.
Beneficial effect: the utility model by arranging dielectric film in substrate body; in described mounting hole both sides, radiating groove is set respectively simultaneously; between described radiating groove, be provided with ceramic rod; effectively improve insulation property and the radiating effect of substrate body; strengthen thermistor and protect the function of other electronic products, extend the useful life of thermistor.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model preferred embodiment.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
A kind of for mounting the NTC themistor on SMD surface referring to Fig. 1, comprises substrate body 1; Wherein, in described substrate body 1, be provided with dielectric film 2, in described substrate body 1, thermistor chip be installed, in the middle of described substrate body 1, be provided with mounting hole 3, described mounting hole 3 both sides are respectively arranged with radiating groove 4, and 4 of described radiating grooves are provided with ceramic rod 5.
In the present embodiment, described substrate body 1 is made for metal material.
In the present embodiment, described thermistor chip is NTC thermistor, effectively suppresses the surge current producing in power circuit.
In the present embodiment, described ceramic rod 5 flows through for reducing thermistor chip overcurrent, improves the resistance to current capability of thermistor chip; Described radiating groove 4 is discharged in time for thermistor being produced to a large amount of heats, improves the function that thermistor is protected other electronic products, extends the useful life of thermistor.
In the present embodiment, in described substrate body 1, thermistor chip is installed, the resistance stabilization of described thermistor chip, and noise is low, and loss is low.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. for mounting the NTC themistor on SMD surface, comprise substrate body; It is characterized in that, in described substrate body, be provided with dielectric film, in described substrate body, thermistor chip is installed, in the middle of described substrate body, be provided with mounting hole, described mounting hole both sides are respectively arranged with radiating groove, between described radiating groove, are provided with ceramic rod.
2. according to claim 1 a kind ofly it is characterized in that for mounting the NTC themistor on SMD surface, described substrate body is that metal material is made.
3. according to claim 1 a kind ofly it is characterized in that for mounting the NTC themistor on SMD surface, described thermistor chip is NTC thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320432799.2U CN203456212U (en) | 2013-07-18 | 2013-07-18 | NTC (Negative Temperature Coefficient) thermosensitive resistor for mounting surfaces of SMD (surface mounted device) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320432799.2U CN203456212U (en) | 2013-07-18 | 2013-07-18 | NTC (Negative Temperature Coefficient) thermosensitive resistor for mounting surfaces of SMD (surface mounted device) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456212U true CN203456212U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320432799.2U Expired - Fee Related CN203456212U (en) | 2013-07-18 | 2013-07-18 | NTC (Negative Temperature Coefficient) thermosensitive resistor for mounting surfaces of SMD (surface mounted device) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203456212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121298A (en) * | 2018-10-31 | 2020-05-08 | 镁工泰克有限公司 | Electric heater element with electrically operated heating element and anode for cathodic corrosion protection |
-
2013
- 2013-07-18 CN CN201320432799.2U patent/CN203456212U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121298A (en) * | 2018-10-31 | 2020-05-08 | 镁工泰克有限公司 | Electric heater element with electrically operated heating element and anode for cathodic corrosion protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20190718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |