CN206742021U - Patch-type SMD semistors - Google Patents
Patch-type SMD semistors Download PDFInfo
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- CN206742021U CN206742021U CN201720624351.9U CN201720624351U CN206742021U CN 206742021 U CN206742021 U CN 206742021U CN 201720624351 U CN201720624351 U CN 201720624351U CN 206742021 U CN206742021 U CN 206742021U
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- thermistor body
- patch
- semistors
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- thermistor
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Abstract
A kind of patch-type SMD semistors, including thermistor body are the utility model is related to, the bottom surface of described thermistor body is provided with inside groove and causes thermistor body bottom to form two relative outside projections；Described thermistor body is provided with electrode in its lap in addition to the upper surface of thermistor body and three faces of formation groove at least one face.The utility model solves defect present in background technology, and solder side is changed into plane from original pin so that thermistor can realize automation demanding when welding, reduce cost of labor.
Description
Technical field
A kind of thermistor is the utility model is related to, especially a kind of patch-type SMD semistors.
Background technology
CPTC is mainly big in heating and overcurrent protection two as a kind of new thermistor material, its current application
Class.In the application as heater, more ripe application at present is intended only as simple air heater application, such as warms oneself
Device, dryer etc..Because fever type PTC has the characteristics that stable performance, heating are rapid, it is small to be influenceed by mains fluctuations, into
For the substitute products that metallic resistance silk heating class material is optimal.It is gradually ripe at present in being applied as overcurrent protection, it is main
Apply in motor tranformer protection, household electrical appliance and in communication product, but plug-in type CPTC thermistors in bulk without
Method walks automatic insertion, can only artificial plug-in unit, cause artificial more expensive.
Utility model content
The technical problems to be solved in the utility model is：A kind of patch-type SMD semistors are provided, can
Meet automatic welding demand.
Technical scheme is used by the utility model solves its technical problem：A kind of patch-type SMD positive temperature coefficients heat
Quick resistance, including thermistor body, the bottom surface of described thermistor body are provided with inside groove and cause thermistor
Body bottom forms two relative outside projections；Upper surface and shape of the described thermistor body except thermistor body
Outside into three faces of groove electrode is provided with its lap at least one face.
Further, projection described in the utility model is square or circular.
Further say, electrode described in the utility model is plane electrode.
The beneficial effects of the utility model are that solve defect present in background technology, and solder side is inserted by original
Pin is changed into plane so that thermistor can realize automation demanding when welding, reduce cost of labor.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is a kind of structural representation of embodiment of the utility model；
Fig. 2 is the structural representation of the utility model another kind embodiment；
In figure：1st, thermistor body；2nd, electrode.
Embodiment
The utility model is described in further detail presently in connection with accompanying drawing and preferred embodiment.These accompanying drawings are letter
The schematic diagram of change, only illustrates basic structure of the present utility model in a schematic way, thus its only show it is relevant with the utility model
Composition.
A kind of patch-type SMD semistors as shown in Figure 1, including thermistor body 1, thermistor
The projection that the bottom surface of body is formed is square；The lower surface of two projections is respectively arranged with the electrode 2 as welding.
A kind of patch-type SMD semistors as shown in Figure 2, including thermistor body 1, thermistor
The projection that the bottom surface of body is formed is square；The side and lower surface of two projections are respectively arranged with the electrode 2 as welding.
Above two embodiment uses special moulding process, blank is had two special projections after forming out
End, and blank intensity meets to require, using special Top electrode technology, makes two special protruding ends or two special projections
There is electrode on end and side, meet automatic welding demand.
Specific technique is as follows：
A dispensing → time batch mixing → press filtration drying → pre-burning → crushing → secondary ball milling → granulation → shaping → sintering → electricity
Pole → finished product test → reliability testing.
Using Sm2O3And SiO2As half guide element, by adjusting PbO/SrCO3Amount adjustment product Curie temperature, open
After sending the formula for meeting to require, using 13.2*11.54*4.9 (groove size 11.54*4.4*1.18), 2.164 ± 0.06 are weighed
Gram, 1320 degree of the highest temperature of setting, certain soaking time and cooling rate are sintered, and are sintered out after porcelain body with InGa to porcelain body
Surface is smeared, and confirms the resistance of porcelain body, makes porcelain body resistance difficult to understand 1~10000 by adjusting soaking time and cooling rate
In nurse, processing test then is studied by production technology, meets following performance requirement：
Essential electrical performance indications
| R25 | Tc | Vmax | Imax | In(25℃) | It(25℃) | Cth | ENon60 | Reliability |
| (Ω) | (℃) | Vac/dc | A | mA | mA | J/K | J | |
| 1~10000 | 60~160 | 12-2000 | 0.1~50 | 5~2000 | 10~4000 | 0.1~10 | 20~500 | IEC-60738-1 |
On automatic welding production line, the upper surface of temperature-sensitive resistor main body need to be only drawn by mechanical arm, by temperature-sensitive electricity
The horizontal plane of resistance body bottom portion is positioned on streamline, you can completes weld job, it is not necessary to pass through artificial plug-in unit.
Simply specific embodiment of the present utility model described in description above, various illustrations are not to this practicality
New substantive content is construed as limiting, and person of an ordinary skill in the technical field can be to former institute after specification has been read
The embodiment stated is made an amendment or deformed, without departing from the spirit and scope of utility model.
Claims (3)
1. a kind of patch-type SMD semistors, including thermistor body, it is characterised in that：Described temperature-sensitive
The bottom surface of resistor main body is provided with inside groove and causes thermistor body bottom to form two relative outside projections；It is described
Thermistor body except the upper surface of thermistor body and at least one in its lap in addition to forming three faces of groove
Electrode is provided with face.
2. patch-type SMD semistors as claimed in claim 1, it is characterised in that：Described projection is side
Shape or circle.
3. patch-type SMD semistors as claimed in claim 1, it is characterised in that：Described electrode is flat
Face electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720624351.9U CN206742021U (en) | 2017-05-31 | 2017-05-31 | Patch-type SMD semistors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720624351.9U CN206742021U (en) | 2017-05-31 | 2017-05-31 | Patch-type SMD semistors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206742021U true CN206742021U (en) | 2017-12-12 |
Family
ID=60568928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720624351.9U Active CN206742021U (en) | 2017-05-31 | 2017-05-31 | Patch-type SMD semistors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206742021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627630A (en) * | 2020-07-08 | 2020-09-04 | 西安恒翔电子新材料有限公司 | Surface-mounted piezoresistor without external electrode and preparation method thereof |
-
2017
- 2017-05-31 CN CN201720624351.9U patent/CN206742021U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627630A (en) * | 2020-07-08 | 2020-09-04 | 西安恒翔电子新材料有限公司 | Surface-mounted piezoresistor without external electrode and preparation method thereof |
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