CN201984910U - Baseboard directly welded plane type power resistor - Google Patents
Baseboard directly welded plane type power resistor Download PDFInfo
- Publication number
- CN201984910U CN201984910U CN2010206976132U CN201020697613U CN201984910U CN 201984910 U CN201984910 U CN 201984910U CN 2010206976132 U CN2010206976132 U CN 2010206976132U CN 201020697613 U CN201020697613 U CN 201020697613U CN 201984910 U CN201984910 U CN 201984910U
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- CN
- China
- Prior art keywords
- ceramic substrate
- power resistor
- silver electrode
- base plate
- baseboard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a baseboard directly welded plane type power resistor which comprises a nickel plated white copper sheet (1), a ceramic substrate (2), a palladium silver electrode (3), a resistance paste (4) and two pins (5), wherein the ceramic substrate (2) is welded on the nickel plated white copper sheet (1); the palladium silver electrode (3) and the resistance paste (4) are respectively impressed and sintered on the ceramic substrate (2) from front to back; and the two pins (5) are welded on the palladium silver electrode (3). In the baseboard directly welded plane type power resistor provided by the utility model, a system heat dissipation baseboard is directly soldered with a resistor baseboard, so that screw holes for fixing are omitted, the heat dissipation effect is good and the packaging density is improved.
Description
Technical field
The utility model relates to the resistive technologies field, relates to particularly that a kind of base plate directly welds, the planar power resistor.
Background technology
Adopt thick film, the planar power resistor of TO220 standard packaging on the current market, rated power is generally 20～35 watts, adopt single-ended M3 screw fixed installation, single-ended fixedly disequilibrium, influence the fastening degree between resistance base plate and the system radiating plate, influence radiating efficiency, thereby cause destabilizing factor.Because the fixed screw holes footprint area is bigger, influenced the further raising of packaging density in addition.
The utility model content
Problem to be solved in the utility model provides that a kind of base plate directly welds, the planar power resistor, with the resistor weak heat-dissipating that overcomes prior art and the shortcoming of packaging density difference.
For achieving the above object, the technical solution of the utility model provides that a kind of base plate directly welds, the planar power resistor, and described resistor comprises nickel plating copper-nickel alloy sheet, ceramic substrate, palladium-silver electrode, resistance slurry and two pins;
Described ceramic substrate is welded on the described nickel plating copper-nickel alloy sheet;
Print sintering palladium-silver electrode and resistance slurry before and after on the described ceramic substrate respectively;
Described two pins are welded on the described palladium-silver electrode.
Further, the length of described ceramic substrate is that 8mm, width are that 5.5mm, thickness are 0.5mm.
Further, described ceramic substrate is 96% alumina ceramic substrate.
Further, scribble one deck glass uranium on the described resistance slurry.
Compared with prior art, the technical solution of the utility model has following advantage:
Base plate of the present utility model directly welds, directly soldering is connected the planar power resistor with the system radiating base plate by adopting the resistor base plate, and has removed the fixing screw of using, and makes its good heat dissipation effect and has improved packaging density.
Description of drawings
Fig. 1 directly welds for base plate of the present utility model, the structural representation of planar power resistor.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
The utility model base plate directly welds, the structure of planar power resistor as shown in Figure 1, described resistor comprises nickel plating copper-nickel alloy sheet (1), ceramic substrate (2), palladium-silver electrode (3), resistance slurry (4) and two pins (5);
Described ceramic substrate (2) is welded on the described nickel plating copper-nickel alloy sheet (1);
Before and after going up, described ceramic substrate (2) prints sintering palladium-silver electrode (3) and resistance slurry (4) respectively;
Described two pins (5) are welded on the described palladium-silver electrode (3).
The length of described ceramic substrate (2) is that 8mm, width are that 5.5mm, thickness are 0.5mm.
Described ceramic substrate (2) is 96% alumina ceramic substrate.
Scribble one deck glass uranium on the described resistance slurry (4).
Base plate of the present utility model directly welds, planar power resistor preparation process is as follows:
At long 8mm, wide 5.5mm, before and after going up, 96% ceramic substrate (2) of thickness 0.5mm prints sintering (through 850 ℃) palladium-silver electrodes (3) respectively, resistance slurry (4), on resistance slurry (4), be coated with one deck glass uranium (through 550 ℃ of sintering) again, by positioning module whole ceramic substrate (2) is positioned at nickel plating copper-nickel alloy sheet (1) then and goes up (evenly coating solder(ing) paste between the two), again whole part more than it is put into welding mould internal fixation, by the welding mould two pins (5) are positioned at palladium-silver electrode (3) and go up (evenly coating solder(ing) paste between the two), all put into vacuum brazing stove at last and carry out vacuum welding, the product after the welding is coated silica gel carry out injection moulding again and can finish.
Base plate of the present utility model directly welds, directly soldering is connected the planar power resistor with the system radiating base plate by adopting the resistor base plate, and has removed the fixing screw of using, and makes its good heat dissipation effect and has improved packaging density.
Described only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
- A base plate directly weld, the planar power resistor, it is characterized in that described resistor comprises nickel plating copper-nickel alloy sheet (1), ceramic substrate (2), palladium-silver electrode (3), resistance slurry (4) and two pins (5);Described ceramic substrate (2) is welded on the described nickel plating copper-nickel alloy sheet (1);Before and after going up, described ceramic substrate (2) prints sintering palladium-silver electrode (3) and resistance slurry (4) respectively;Described two pins (5) are welded on the described palladium-silver electrode (3).
- 2. a kind of base plate as claimed in claim 1 directly welds, the planar power resistor, it is characterized in that, the length of described ceramic substrate (2) is that 8mm, width are that 5.5mm, thickness are 0.5mm.
- 3. a kind of base plate as claimed in claim 1 directly welds, the planar power resistor, it is characterized in that, described ceramic substrate (2) is 96% alumina ceramic substrate.
- 4. a kind of base plate as claimed in claim 1 directly welds, the planar power resistor, it is characterized in that, scribbles one deck glass uranium on the described resistance slurry (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206976132U CN201984910U (en) | 2010-12-31 | 2010-12-31 | Baseboard directly welded plane type power resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206976132U CN201984910U (en) | 2010-12-31 | 2010-12-31 | Baseboard directly welded plane type power resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201984910U true CN201984910U (en) | 2011-09-21 |
Family
ID=44612366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206976132U Expired - Lifetime CN201984910U (en) | 2010-12-31 | 2010-12-31 | Baseboard directly welded plane type power resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201984910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112712950A (en) * | 2020-12-18 | 2021-04-27 | 中国振华集团云科电子有限公司 | Power resistor and preparation method thereof |
-
2010
- 2010-12-31 CN CN2010206976132U patent/CN201984910U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112712950A (en) * | 2020-12-18 | 2021-04-27 | 中国振华集团云科电子有限公司 | Power resistor and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110921 |