CN209929070U - Novel radiator installation glass glaze film fixed resistor - Google Patents
Novel radiator installation glass glaze film fixed resistor Download PDFInfo
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- CN209929070U CN209929070U CN201920293793.9U CN201920293793U CN209929070U CN 209929070 U CN209929070 U CN 209929070U CN 201920293793 U CN201920293793 U CN 201920293793U CN 209929070 U CN209929070 U CN 209929070U
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- resistor
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- ceramic substrate
- oxide ceramic
- beryllium oxide
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Abstract
The utility model discloses a novel radiator installation glass glaze membrane fixed resistor. The resistor comprises a shell, a beryllium oxide ceramic substrate and a copper plate. The surface of the copper plate is plated with a weldable nickel layer, the lower surface of the beryllium oxide ceramic substrate is printed with a sintered silver layer, the silver layer and the weldable nickel layer are welded through soldering paste, and the welded beryllium oxide ceramic substrate and the copper plate are fixed to form a chip of the resistor; the shell is connected with the copper plate to form a cavity for accommodating the chip. The utility model has the advantages that: only adopt a casing to install, changed the tradition and needed the inner shell to encapsulate the mode jointly, the improvement of this structure has realized the thick film noninductive promptly, has significantly reduced the volume of this resistor moreover, has realized the effect of volume miniaturization.
Description
Technical Field
The utility model relates to an electronic components technical field especially relates to a novel radiator installation glass glaze membrane fixed resistor.
Background
At present, thick-film planar super-power resistors of 400W or more are sold on the market, and have wider application range in resistive elements, but have the following defects in structure: the resistor is packaged by the inner shell and the outer shell together, although the resistor has certain tightness, the product has larger volume and narrower application range, and certain limitation is brought to the use.
SUMMERY OF THE UTILITY MODEL
1. To the weak point that exists in the above-mentioned technique, the utility model provides a radiator installation glass glaze membrane fixed resistor that simple structure, structure are inseparable and small.
2. In order to achieve the purpose, the utility model provides a radiator-mounted glass glaze film fixed resistor, which comprises a beryllium oxide ceramic substrate, a copper plate and a shell; palladium-silver electrodes are sintered on two sides of the beryllium oxide ceramic substrate, a lead is welded on the palladium-silver electrode on one side, and the beryllium oxide ceramic substrate and the copper plate are welded to form a composite substrate; the shell is provided with an accommodating cavity, and the composite substrate is fixed in the accommodating cavity; the shell is also provided with two copper electrodes which are electrically connected.
3. And solder paste is coated between the beryllium oxide ceramic substrate and the copper plate.
4. And four end corners of the shell are provided with mounting screw holes for fixing the resistor.
5. Wherein, two copper electrodes on the casing all are equipped with the screw hole, have been convenient for product and circuit connection.
6. Wherein the beryllium oxide ceramic substrate has the length of 30mm, the width of 26mm and the thickness of 1.5 mm.
7. Wherein the copper plate has a length of 44.6mm, a width of 38.6mm and a thickness of 2 mm.
8. The utility model has the advantages that: compared with the prior art, the utility model provides a radiator installation glass glaze membrane fixed resistor installs the intracavity that holds at the casing with composite substrate, has only adopted a casing to install in this structure, and the improvement of this structure has significantly reduced the volume of this resistor, has realized the effect of volume miniaturization, can guarantee lower inductance and capacitance value moreover. The utility model has the characteristics of simple structure, reasonable in design, structure are inseparable, small and the usability is strong etc.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a perspective view of a radiator-mounted glass-glaze-film-fixed resistor according to the present invention;
FIG. 2 is a front view of FIG. 1;
fig. 3 is a structural diagram of the base plate according to the present invention.
The main element symbols are as follows:
1. beryllium oxide ceramic substrate
2. Copper plate
3. Lead wire
4. Palladium-silver electrode
5. Resistance paste
6. Shell body
7. Electrode for electrochemical cell
8. Mounting screw hole
Detailed Description
In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.
1. Referring to fig. 1-3, the radiator-mounted glass glaze film fixed resistor of the present invention includes a beryllium oxide ceramic substrate 1, a copper plate 2 and a housing 6; palladium-silver electrodes 4 are sintered on two sides of the beryllium oxide ceramic substrate, leads 3 are welded on the palladium-silver electrodes 4, resistance paste 5 is sintered on the beryllium oxide ceramic substrate 1, the resistance paste 5 is placed between the palladium-silver electrodes 4, and the beryllium oxide ceramic substrate 1 and the copper plate 2 are welded to form a composite substrate; the shell 6 is provided with an accommodating cavity, and the composite substrate is fixed in the accommodating cavity; the shell 6 is also provided with two electrodes 7 and 4 mounting screw holes 8.
2. Compared with the prior art, the utility model provides a radiator installation glass glaze membrane fixed resistor installs composite substrate in the intracavity that holds of casing 6, only adopts a casing 6 to install in this structure, has changed the tradition and has needed the mode that inner shell and shell encapsulate jointly, and the improvement of this structure has significantly reduced the volume of this resistor, has realized the effect of volume miniaturization, can guarantee no inductance and lower capacitance value moreover. The utility model has the characteristics of simple structure, reasonable in design, structure are inseparable, small and the practicality is strong etc.
3. In this embodiment, a solder paste (not shown) is applied between the beryllium oxide ceramic substrate 1 and the copper plate 2. The tightness of the weld between the two components and the structural stability can be improved by the action of the solder paste.
4. In this embodiment, four ends of the housing 6 are provided with mounting screw holes 8 for fixing the resistor. The structure adopts standard M4 screws to fix with the mounting screw holes 8, and the copper plate 2 is slightly exposed out of the shell 6, so that the close fit degree of the resistor and the system heat dissipation plate is improved.
5. In this embodiment, the electrode 7 mounted on the housing 6 is provided with a threaded hole M5, and the electrical connection can be completed only by locking the screw on the electrode 7 during mounting.
6. In this example, the beryllium oxide ceramic substrate 1 had a length of 30mm, a width of 26mm, and a thickness of 1.5 mm. The copper plate 2 has a length of 44.6mm, a width of 38.6mm and a thickness of 2 mm. The electrode is a regular hexagon with a width of 9 mm. The utility model provides a resistor compares in prior art to miniaturized development on the volume size, has richened the design choice that the small-size high power of customer does not have the office and puts.
7. The utility model provides a radiator installation glass glaze membrane fixed resistor, its preparation step is as follows: firstly, printing and sintering palladium-silver electrodes 4 on two surfaces of a beryllium oxide ceramic substrate 1 with the length of 30mm, the width of 26mm and the thickness of 1.5mm, and selecting a sintering curve at a certain temperature; secondly, printing a sintered resistance paste layer 5 on the beryllium oxide ceramic substrate 1 of the sintered palladium-silver electrode 4, and selecting a sintering curve at a certain temperature; coating solder paste on one end of the resistance-free slurry layer of the beryllium oxide ceramic substrate, and placing the solder paste on a copper plate 2 with the length of 44.6mm, the width of 38.6mm and the thickness of 2mm to form a composite substrate; fourthly, welding a lead wire with the diameter of 0.8mm on the palladium-silver electrode, fixing the lead wire by using a clamp, and putting the whole into a reflow furnace for welding; and fourthly, mounting the integrally welded composite substrate in a shell 6, filling silica gel, welding an electrode 7 and finishing the assembly of the resistor.
8. The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.
Claims (5)
1. A novel resistor fixed by a glass glaze film for mounting a radiator is characterized by comprising a shell, a beryllium oxide ceramic substrate and a copper plate, wherein a weldable nickel layer is electroplated on the surface of the copper plate, a sintered silver layer is printed on the lower surface of the beryllium oxide ceramic substrate, the silver layer and the weldable nickel layer are welded through soldering paste, and the welded beryllium oxide ceramic substrate and the copper plate are fixed to form a chip of the resistor; the shell is connected with the copper plate to form a cavity for containing the chip, and solder paste is coated between the beryllium oxide ceramic substrate and the copper plate.
2. The heat sink mounting glass-glaze fixed resistor as recited in claim 1, wherein the housing has mounting screw holes for fixing the resistor at each of four corners of the housing.
3. The heat sink mounting glass-glaze fixed resistor as recited in claim 1, wherein each electrode is provided with a mounting screw hole for connection.
4. The heat sink mounting glass-glaze fixed resistor as recited in claim 2, wherein the beryllium oxide ceramic substrate has a length of 30mm, a width of 26mm, and a thickness of 1.5 mm.
5. The heat sink mounting glass-glaze fixed resistor as recited in claim 2, wherein the copper plate has a length of 44.6mm, a width of 38.6mm and a thickness of 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920293793.9U CN209929070U (en) | 2019-03-07 | 2019-03-07 | Novel radiator installation glass glaze film fixed resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920293793.9U CN209929070U (en) | 2019-03-07 | 2019-03-07 | Novel radiator installation glass glaze film fixed resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209929070U true CN209929070U (en) | 2020-01-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920293793.9U Active CN209929070U (en) | 2019-03-07 | 2019-03-07 | Novel radiator installation glass glaze film fixed resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209929070U (en) |
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2019
- 2019-03-07 CN CN201920293793.9U patent/CN209929070U/en active Active
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