CN217588572U - Resistor with protective layer - Google Patents
Resistor with protective layer Download PDFInfo
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- CN217588572U CN217588572U CN202123123279.7U CN202123123279U CN217588572U CN 217588572 U CN217588572 U CN 217588572U CN 202123123279 U CN202123123279 U CN 202123123279U CN 217588572 U CN217588572 U CN 217588572U
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Abstract
A resistor with a protective layer belongs to the field of electronic components. The LED lamp is characterized by comprising an insulating substrate; the resistance layer is arranged on the upper surface of the insulating substrate; the front electrode comprises a first front electrode and a second front electrode, the first front electrode and the second front electrode are respectively arranged at two ends of the upper surface of the insulating substrate, and a gap is reserved between the first front electrode and the second front electrode; the protective layer is arranged above the resistor layer and covers a part of the first front electrode and the second front electrode; the protective layer is arranged above the protective layer and covers a part of the first front electrode and the second front electrode; a back electrode including a first back electrode and a second back electrode. The utility model provides a resistor has damp and hot resistance, corrosion-resistant advantage.
Description
Technical Field
The utility model relates to an electronic components technical field especially relates to a resistor with protective layer.
Background
The resistor is mainly composed of a rectangular parallelepiped insulating substrate, a pair of front electrodes arranged to face each other with a predetermined gap therebetween on the front surface of the insulating substrate, a pair of rear electrodes arranged to face each other with a predetermined gap therebetween on the rear surface of the insulating substrate, end surface electrodes bridging the front electrodes and the rear electrodes, a resistor bridging the pair of front electrodes, and a protective layer covering the resistor.
Although the existing resistor has simple process, low realization difficulty and low cost, the product uses slurry as a protective layer, and the conventional single-layer protection design is not enough for protecting the resistor, so the influence of the external environment, including humidity, salt mist, acid corrosion and the like, must be fully considered.
SUMMERY OF THE UTILITY MODEL
Based on this, the present invention aims to overcome the above-mentioned shortcomings of the prior art and to provide a resistor with a protective layer. The resistor with the protective layer has high humidity resistance, high heat resistance and high corrosion resistance.
In order to achieve the above object, the present invention provides a resistor with an overcoat layer, including: an insulating substrate; the resistance layer is arranged on the upper surface of the insulating substrate; the front electrode comprises a first front electrode and a second front electrode, the first front electrode and the second front electrode are respectively arranged at two ends of the upper surface of the resistance layer, and a gap is reserved between the first front electrode and the second front electrode; the protective layer is arranged above the resistance layer and covers a part of the first front electrode and the second front electrode; the protective layer is arranged above the protective layer and covers a part of the first front electrode and the second front electrode.
Preferably, the resistor further includes a back electrode including a first back electrode and a second back electrode.
Preferably, the insulating substrate is an aluminum oxide ceramic substrate or an aluminum nitride ceramic substrate with a thin aluminum oxide layer deposited on the surface.
Preferably, the resistance layer is made of an alloy material, and the alloy material is one of manganese-copper alloy, nickel-chromium alloy, manganese-copper-tin alloy, manganese-copper-nickel alloy, nickel-copper-iron alloy and nickel-chromium-aluminum-silicon alloy.
Preferably, the protective layer is formed by one or more of organic materials such as polymers, resin glue, photoresist and the like.
Preferably, the opposite side surfaces of the insulating substrate are respectively provided with a pair of end surface electrode layers covering the first back surface electrode and the first front surface electrode and the second back surface electrode and the second front surface electrode such that the first back surface electrode is connected with the first front surface electrode and the second back surface electrode is connected with the second front surface electrode.
Preferably, a pair of external electrode layers is provided on the end face electrode layers, the external electrode layers covering the end face electrode layers and at least covering part of the protective layer.
Drawings
Various aspects of the invention may be better understood from the following detailed description when read in conjunction with the accompanying drawings. It should be emphasized that, in accordance with the standard practice in the industry, various features are not drawn to scale and are used for illustration purposes only. In fact, the dimensions of the various elements may be arbitrarily increased or reduced for clarity of discussion.
Fig. 1 is a schematic structural diagram of the resistor of the present invention.
In the figure: 1 represents an insulating substrate; 2 represents a resistive layer; 3 represents a first front electrode; 4 represents a second front electrode; 5 represents a protective layer; 6 represents a protective layer; 7 represents a first back electrode; 8 denotes a second back electrode; 9 represents an end face electrode; and 10 denotes an external electrode.
Detailed Description
For better illustration of the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and specific embodiments, and in addition, the selection of the alloy materials of the present invention can be selected by those skilled in the art according to specific situations, and not only the present embodiment is used as an example to further illustrate the structure, preparation scheme and effect of the resistor of the present invention.
The utility model provides a resistor with inoxidizing coating, with the help of the attached figure of this specification, including insulating substrate 1, insulating substrate 1 is alumina ceramic base plate or the aluminium nitride ceramic base plate that has the surface deposit with the aluminium oxide thin layer.
The resistance layer 2 is arranged on the upper surface of the insulating substrate 1, and the resistance layer 2 is made of an alloy material, wherein the alloy material is one of manganese-copper alloy, nickel-iron alloy, manganese-copper-tin alloy, manganese-copper-nickel alloy, nickel-copper-iron alloy and nickel-chromium-aluminum-silicon alloy. In the present embodiment, the resistive layer 2 may be formed by a vacuum sputtering method.
The front electrodes comprise a first front electrode 3 and a second front electrode 4, the first front electrode 3 and the second front electrode 4 are respectively arranged at two ends of the upper surface of the resistor layer 2, and a gap is reserved between the first front electrode 3 and the second front electrode 4. The front electrode is made of gold or silver, and in this embodiment, the gold electrode or the silver electrode may be formed by evaporation or screen printing.
And the protective layer 5 is arranged above the resistor layer 2, and covers a part of the first front electrode 3 and the second front electrode 4. The protective layer 5 is formed by one or more of organic materials such as polymer, resin glue, photoresist and the like. The protective layer 5 can protect the resistance layer and improve the moisture resistance and corrosion resistance of the product.
A protective layer 6, the protective layer 6 being disposed over the protective layer 5, the protective layer 6 covering a portion of the first and second front electrodes 3, 4. In this embodiment, the protective layer 6 is glass or epoxy resin, and may be formed by screen printing to protect the resistive layer from dust, electricity, and the like.
And a back electrode including a first back electrode 7 and a second back electrode 8. In this embodiment, the material of the back electrode is silver, and the back electrode can be formed by screen printing.
In one embodiment, the opposite sides of the insulating substrate 1 are respectively provided with a pair of end surface electrode layers 9, and the end surface electrode layers 9 cover the first back surface electrode 3 and the first front surface electrode 4 and the second back surface electrode 7 and the second back surface electrode 8, so that the first back surface electrode 7 is connected to the first front surface electrode 3 and the second back surface electrode 8 is connected to the second back surface electrode 9. In this embodiment, the material of the end face electrode layer 9 is nickel, and the end face electrode layer may be formed by end coating or end conduction sputtering.
In one embodiment, a pair of external electrode layers 10 are provided on the end-face electrode layer 9, and the external electrode layers 10 cover the end-face electrode layer 9 and at least cover part of the protective layer 6. The external electrode layer 10 is made of tin-lead, and may be formed by electroplating.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A resistor having an overcoat layer, comprising: an insulating substrate; the resistance layer is arranged on the upper surface of the insulating substrate; the front electrode comprises a first front electrode and a second front electrode, the first front electrode and the second front electrode are respectively arranged at two ends of the upper surface of the resistance layer, and a gap is reserved between the first front electrode and the second front electrode; the protective layer is arranged above the resistance layer and covers a part of the first front electrode and the second front electrode; the protective layer is arranged above the protective layer and covers a part of the first front electrode and the second front electrode.
2. The resistor with an overcoat layer of claim 1 further comprising a back electrode, said back electrode comprising a first back electrode and a second back electrode.
3. The resistor with protective layer according to claim 1, wherein the insulating substrate is an alumina ceramic substrate or an aluminum nitride ceramic substrate having a thin alumina layer deposited thereon.
4. The armored resistor of claim 1, wherein the resistive layer is formed of an alloy material selected from the group consisting of manganin, nickel copper, nickel iron, manganin tin, manganin nickel, nickel iron, nickel chromium aluminum silicon.
5. The resistor with the protective layer according to claim 1, wherein the protective layer is made of one or more organic materials selected from a group consisting of polymers, resin adhesives, and photoresists.
6. The resistor with an overcoat layer as claimed in claim 2, wherein a pair of end electrode layers are respectively disposed on opposite sides of said insulating substrate, said end electrode layers covering said first back electrode and said first front electrode and said second back electrode and said second front electrode, such that said first back electrode is connected to said first front electrode and said second back electrode is connected to said second front electrode.
7. The resistor with a protective layer according to claim 1, wherein a pair of external electrode layers are provided on the end-face electrode layers, the external electrode layers covering the end-face electrode layers and at least covering a part of the protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123123279.7U CN217588572U (en) | 2021-12-13 | 2021-12-13 | Resistor with protective layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123123279.7U CN217588572U (en) | 2021-12-13 | 2021-12-13 | Resistor with protective layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217588572U true CN217588572U (en) | 2022-10-14 |
Family
ID=83526382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123123279.7U Active CN217588572U (en) | 2021-12-13 | 2021-12-13 | Resistor with protective layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217588572U (en) |
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2021
- 2021-12-13 CN CN202123123279.7U patent/CN217588572U/en active Active
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