CN209149885U - A kind of plane thick film power resistor - Google Patents
A kind of plane thick film power resistor Download PDFInfo
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- CN209149885U CN209149885U CN201820792449.XU CN201820792449U CN209149885U CN 209149885 U CN209149885 U CN 209149885U CN 201820792449 U CN201820792449 U CN 201820792449U CN 209149885 U CN209149885 U CN 209149885U
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- metal pins
- resistor
- thick film
- bottom plate
- film power
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Abstract
The utility model discloses a kind of plane thick film power resistors, the resistor includes upper-layer insulation film, middle layer potsherd, radiating bottom plate, resistor disc and a plurality of metal pins, the upper-layer insulation film, middle layer potsherd and radiating bottom plate are cascading, the resistor disc printing is sintered on potsherd in middle level, and a plurality of metal pins are welded on the both ends of resistor disc.In the utility model, which is bound directly by radiating bottom plate, middle layer potsherd and resistor disc, not only increases its radiating efficiency, and reduce the volume of resistor, expands application range, power is big and performance is stablized.
Description
Technical field
The utility model belongs to electronic component field, in particular to a kind of plane thick film power resistor.
Background technique
Power thick-film resistor mainly uses on some specific environments, particular device, when in use in order to improve power,
It needs to be installed on a heat sink, is distributed the heat that resistance generates rapidly by radiator, therefore, resistor radiates fast
Slowly the size of resistor power is determined.The heat of resistor is quickly passed on radiator, resistance temperature rise is reduced, electricity can be improved
Resistance uses power and service life.
A kind of power thick-film resistor is disclosed in the documents of Patent No. 201310645117.0, including one side prints
System is sintered interior electrode and resistance, the resistance substrate of another side printing sintering back electrode, and the surface engagement of resistance substrate back electrode is set
One piece of heat-conducting plate is set, heat-conducting plate is the inner and outer surfaces fixed porcelain substrate for covering interior thermally conductive sheet and outer thermally conductive sheet respectively, interior thermally conductive sheet
Surface be coated with nickel layer, which cooperates face-to-face with the back electrode on resistance substrate is welded and fixed.It is two-sided using inner and outer surfaces
The porcelain substrate of welding thermally conductive sheet is welded on the surface of resistance substrate back electrode as heat-conducting plate, and two-sided thermally conductive sheet temperature distortion can be mutual
Offset, keep the thermal expansion coefficient of heat-conducting plate and resistance substrate almost the same, overcome existing resistor large scale use when because
Thermal expansion coefficient inconsistent the problem of causing resistance substrate to crack；The present invention can be such that resistor power accomplishes more under same volume
Greatly, and performance is stablized, and is notheated deformation.
But power thick-film resistor heat dissipation is slow, volume is big, and performance is unstable.
Utility model content
To solve the above problems, the purpose of this utility model is to provide a kind of small in size, at low cost, perfect heat-dissipating,
The plane thick film power resistor that power is big and performance is stable；
Another of the utility model is designed to provide a kind of plane thick film power resistor, resistor structure letter
Single, processing cost is low, and using effect is good, is easy to be widely popularized.
To achieve the above object, the technical solution of the utility model is as follows.
The utility model provides a kind of plane thick film power resistor, which includes upper-layer insulation film, middle layer ceramics
Piece, radiating bottom plate, resistor disc and a plurality of metal pins, the upper-layer insulation film, middle layer potsherd and radiating bottom plate successively layer
Folded setting, the resistor disc printing is sintered on potsherd in middle level, and a plurality of metal pins are welded on the both ends of resistor disc.?
In the utility model, which is bound directly by radiating bottom plate, middle layer potsherd and resistor disc, is not only improved
Its radiating efficiency, and reduce the volume of resistor, application range is expanded, power is big and performance is stablized.Further
Ground, the radiating bottom plate head end are provided with extension block.Extension block is arranged for enhancing its stability.
Further, the extension block is in convex, and offers circular hole in the convex.Circular hole is offered, is convenient for
It is fixed.
Further, the metal pins include the first metal pins and the second metal pins, first metal pins
Weld part is by high temperature resistant tin welding in resistive layer head end, and the lead division of the first metal pins of the institute passes through common tin welding
On other components, the second metal pins weld part is stated by high temperature resistant tin welding in resistive layer tail end, and the institute second
The lead division of metal pins is welded on other components by common tin.First metal pins and the second metal pins weld part
Using high temperature resistant tin welding, lead division uses common tin welding, is that prevent the resistance welding in other components be that temperature is too high
And it melts.
Further, fixed part, and described fixed part or so are provided between the metal pins weld part and lead division
Extending has fixed block, and the diameter of the metal pins weld part and lead division is less than fixed part.Designing such structure is
It is fixed to reinforce it, enhances its stability.
Further, the radiating bottom plate is copper-nickel alloy material.Enhance its heat dissipation performance.
Further, the radiating bottom plate is directly welded on radiating surface.
The advantage of the utility model is: compared with the prior art, in the utility model, which passes through
Radiating bottom plate, middle layer potsherd and resistor disc are bound directly, and not only increase its radiating efficiency, and reduce resistor
Volume expands application range, and power is big and performance is stablized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model plane thick film power resistor.
Fig. 2 is the structural schematic diagram after the injection molding of the utility model plane thick film power resistor dielectric resin material.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
To achieve the above object, the technical solution of the utility model is as follows.
Referring to shown in Fig. 1-2, the utility model provides a kind of plane thick film power resistor, which includes that upper layer is exhausted
Edge layer 3, middle layer potsherd 2, radiating bottom plate 1, resistor disc (not shown) and a plurality of metal pins 4, upper-layer insulation film 1, middle layer
Potsherd 2 and radiating bottom plate 3 are cascading, and resistor disc printing is sintered on potsherd 1 in middle level, and a plurality of metal pins
It is welded on the both ends of resistor disc.In the utility model, which passes through radiating bottom plate 1, middle layer potsherd and electricity
Binding directly for resistance piece, not only increases its radiating efficiency, and reduce the volume of resistor, expands application range,
Power is big and performance is stablized.
In the present embodiment, 1 head end of radiating bottom plate is provided with extension block 11.Extension block is arranged for enhancing its stability.
In the present embodiment, extension block 11 is in convex, and circular hole 110 is offered in convex.Circular hole is offered, is convenient for
It is fixed.
In the present embodiment, metal pins include the first metal pins 41 and the second metal pins 42, the first metal pins
41 weld parts 410 pass through high temperature resistant tin welding in resistive layer head end, and the lead division 411 of the first metal pins 41 passes through common tin
Be welded on other components, 42 weld part 420 of the second metal pins by high temperature resistant tin welding in resistive layer tail end, and institute the
The lead division 421 of two metal pins 42 is welded on other components by common tin.First metal pins and the second metal draw
Foot weld part uses high temperature resistant tin welding, and it is to prevent the resistance welding from being in other components that lead division, which uses common tin welding,
Temperature too Gao Errong falls.
In the present embodiment, fixed part 43 is provided between 4 weld part of metal pins and lead division, and fixed part 43 is left
The right side, which is extended, fixed block 431, and the diameter of 4 weld part of metal pins and lead division is less than fixed part.Design such structure
It is to enhance its stability to reinforce it and fix.
In the present embodiment, radiating bottom plate 1 is copper-nickel alloy material.Enhance its heat dissipation performance.
In the present embodiment, radiating bottom plate 1 is directly welded on radiating surface.
The advantage of the utility model is: compared with the prior art, in the utility model, which passes through
Radiating bottom plate, middle layer potsherd and resistor disc are bound directly, and not only increase its radiating efficiency, and reduce resistor
Volume expands application range, and power is big and performance is stablized.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (7)
1. a kind of plane thick film power resistor, which is characterized in that the resistor includes upper-layer insulation film, middle layer potsherd, dissipates
Hot bottom plate, resistor disc and a plurality of metal pins, the upper-layer insulation film, middle layer potsherd and radiating bottom plate are stacked gradually and are set
It sets, the resistor disc printing is sintered on potsherd in middle level, and a plurality of metal pins are welded on the both ends of resistor disc.
2. plane thick film power resistor as described in claim 1, which is characterized in that the radiating bottom plate head end, which is provided with, to be prolonged
Stretch block.
3. plane thick film power resistor as claimed in claim 2, which is characterized in that the extension block is in convex, and institute
It states and offers circular hole in convex.
4. plane thick film power resistor as described in claim 1, which is characterized in that the metal pins include the first metal
Pin and the second metal pins, the first metal pins weld part by high temperature resistant tin welding in resistive layer head end, and it is described
The lead division of first metal pins is welded on component by common tin, and the second metal pins weld part passes through high temperature resistant
Tin welding is in resistive layer tail end, and the lead division of second metal pins is welded on component by common tin.
5. plane thick film power resistor as claimed in claim 4, which is characterized in that the metal pins weld part and extraction
It is provided with fixed part between portion, and described fixed part or so extends fixed block, and the metal pins weld part and draws
The diameter in portion is less than fixed part.
6. plane thick film power resistor as claimed in claim 4, which is characterized in that the radiating bottom plate is copper-nickel alloy material.
7. plane thick film power resistor as claimed in claim 4, which is characterized in that the radiating bottom plate is directly welded at scattered
On hot face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820792449.XU CN209149885U (en) | 2018-05-25 | 2018-05-25 | A kind of plane thick film power resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820792449.XU CN209149885U (en) | 2018-05-25 | 2018-05-25 | A kind of plane thick film power resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209149885U true CN209149885U (en) | 2019-07-23 |
Family
ID=67264056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820792449.XU Active CN209149885U (en) | 2018-05-25 | 2018-05-25 | A kind of plane thick film power resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209149885U (en) |
-
2018
- 2018-05-25 CN CN201820792449.XU patent/CN209149885U/en active Active
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