CN208189317U - A kind of noninductive small-power resistance of RSH type thick film - Google Patents
A kind of noninductive small-power resistance of RSH type thick film Download PDFInfo
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- CN208189317U CN208189317U CN201820800632.XU CN201820800632U CN208189317U CN 208189317 U CN208189317 U CN 208189317U CN 201820800632 U CN201820800632 U CN 201820800632U CN 208189317 U CN208189317 U CN 208189317U
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- ceramic piece
- thick film
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- resistive layer
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Abstract
The utility model discloses a kind of noninductive small-power resistance of RSH type thick film, the resistance includes ceramic piece, thick film resistive layer, cover board, first pin, second pin and shell, first pin is soldered to ceramic piece upper surface left end, second pin is soldered to ceramic piece upper surface right end, thick film resistive layer printing sinters to ceramic piece upper surface, and thick film resistive layer left end is connect with the first pin, thick film resistive layer right end is connect with second pin, tabletting covers above thick film resistive layer, shell is molded the first pin of package by dielectric resin material, second pin, ceramic piece, thick film resistive layer and tabletting form, housing upper surface is equipped with the first pin through hole, second pin through hole, housing lower surface is equipped with ceramic piece through hole, first pin upper end passes through the first pin through hole, in second pin End passes through ceramic piece through hole by second pin through hole, ceramic piece lower surface.
Description
Technical field
The utility model belongs to electronic component field field, in particular to small-power thick-film resistor.
Background technique
Existing resistor generally all can to preferably be combined or better play protective effect with other devices
It is provided with shell, and inside the shell by the installation of the main modular of resistor.But existing small-power noninductive resistance is being molded
Calorific value is high when being easy deformation when shell, and using and stability is poor；Use scope is narrow and noise is big, can not inventory match
Part uses standard.
Patent document 105575565 discloses a kind of small-power aluminium alloy cement resistor, a kind of small-power aluminium alloy cement
Resistance, including bar shaped box cover, bar shaped bottom case；The first U-shaped groove and the second U-shaped groove is arranged in bar shaped box cover both ends；It is described
Bar shaped box cover two sides are symmetrical arranged bar shaped buckle；The first card slot and the second card slot is arranged in bar shaped bottom case both ends；The bar shaped
Bottom case both sides external is symmetrical arranged bar shaped snap-gauge；Ceramic mandrel rod and resistance wire is arranged in the bar shaped bottom shell；The ceramic shaft
Lead-out wire is arranged in stick both ends；Mounting hole is arranged in two sides among the bar shaped bottom shell.But its precision is low, the big occupancy of volume
Space is higher, and processing flow is complicated.
Summary of the invention
To solve the above problems, a kind of deforming when providing processing for the utility model is small, steady type thick film is noninductive small-power
Resistance.
Another of the utility model is designed to provide a kind of noninductive small-power resistance of RSH type thick film, the resistance cost
Low, easy to use, processing flow is few, easy to maintain, easy to spread.
To achieve the above object, the technical solution of the utility model is as follows:
A kind of noninductive small-power resistance of RSH type thick film, the resistance include ceramic piece, thick film resistive layer, tabletting,
One pin, second pin and shell,
First pin is soldered to ceramic piece upper surface left end, and the second pin is soldered to ceramic on piece
Surface right end, the thick film resistive layer printing sinter to ceramic piece upper surface, and thick film resistive layer left end and the first pin
Connection, thick film resistive layer right end are connect with second pin,
The tabletting is covered in above thick film resistive layer, and the shell is molded under the first pin of package by dielectric resin material
End, second pin lower end, ceramic piece, thick film resistive layer and tabletting form, housing upper surface be equipped with the first pin through hole,
Second pin through hole, housing lower surface are equipped with ceramic piece through hole, and first pin upper end is logical by the first pin
Via hole, by second pin through hole, ceramic piece lower surface is logical across ceramic piece for the second pin upper end
Via hole.
It is covered above thick film resistive layer by tabletting, shrinkage causes after heat expansion, cooling when dielectric resin material being avoided to be molded
Single-layer ceramic thermally conductive sheet deformation, thick film resistive layer occur phenomenon of rupture, improve product injection molding after dielectric resin material shrink and
Caused bottom plate unevenness phenomenon, and ceramic piece lower surface leakage shell, facilitate resistance lower surface being contacted with existing dissipate
In thermal, low-resistance heat drops.
Further, which further includes having silica gel, the tabletting covering thick film resistive layer contact surface and tabletting four
Periphery is coated with silica gel.
Further, which further includes having resin, the tabletting covering thick film resistive layer contact surface and tabletting four
Perimeter injection moulding has resin.
Further, the ceramic piece and tabletting are alumina ceramics substrate.
Further, first pin and second pin are L-shaped, and first pin is located on ceramic piece left side
Side, the second pin are located at top on the right side of ceramic piece.
Further, first pin and the second pin rotational symmetry centered on ceramic piece geometric center.
The rotational symmetry setting of both first pin and second pin at ceramic piece both ends, it is relatively stable in grafting,
It is not easy to shake.
Further, first pin upper end is equipped with the first welding hole, and the second pin upper end is equipped with the second welding hole.
It is equipped with welding hole on the first pin and second pin, processing industry welding is facilitated to use.
Further, shell leading flank left end is equipped with the first fixing seat, and it is solid that shell trailing flank right end is equipped with second
Reservation, first fixing seat and the second fixing seat are with shell geometric center rotational symmetry.
It is equipped with fixing seat in shell, is easily installed in available circuit plate or other positions, fixing seat is staggeredly set with pin
It sets, forms Corner Strapped after grafting and mounting-fixing base, and to easily seat is fixed being fixed after grafting.
Further, the ceramic piece and tabletting are 96% alumina ceramics substrate, the ceramic piece thickness 1.20mm
Long 38mm wide 11.5mm, the tabletting thickness 1mm long 28mm wide 9.5mm.
The advantage of the utility model is:
Compared with the prior art, the use of the new type will be covered above thick film resistive layer by tabletting, avoid insulating resin material
Shrinkage causes the deformation of single-layer ceramic thermally conductive sheet, thick film resistive layer that phenomenon of rupture occurs after heat expansion, cooling when material injection molding, improves production
Bottom plate unevenness phenomenon caused by dielectric resin material contraction after product injection molding, and ceramic piece lower surface leakage shell, side
Just resistance lower surface is contacted on existing radiator, drops low-resistance heat.
Detailed description of the invention
Fig. 1 is a kind of noninductive the first visual angle of the small-power resistance schematic diagram of RSH type thick film of the utility model.
Fig. 2 is a kind of noninductive the second visual angle of the small-power resistance schematic diagram of RSH type thick film of the utility model.
A kind of RSH type thick film of the utility model noninductive small-power resistance schematic internal view when Fig. 3.
Fig. 4 is a kind of noninductive small-power resistance internal structure perspective view of the explosion of RSH type thick film of the utility model.
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.
The technical solution of the utility model is as follows:
As shown in Figure 1, Figure 2, Fig. 3 and Fig. 4, a kind of noninductive small-power resistance of RSH type thick film, which includes ceramic piece
1, thick film resistive layer 2, tabletting 3, the first pin 4, second pin 5 and shell 6,
First pin 4 is soldered to 1 upper surface left end of ceramic piece, and second pin 5 is soldered to 1 upper surface of ceramic piece
Right end, the printing of thick film resistive layer 2 sinter to 1 upper surface of ceramic piece, and 2 left end of thick film resistive layer connect with the first pin 4,
2 right end of thick film resistive layer is connect with second pin 5,
Tabletting 3 is covered in 2 top of thick film resistive layer, and shell 6 wraps up 4 lower end of the first pin, second by dielectric resin material
5 lower end of pin, ceramic piece 1, thick film resistive layer 2 and tabletting 3 form, 6 upper surface of shell be equipped with the first pin through hole 61,
Second pin through hole 62,6 lower surface of shell are equipped with ceramic piece through hole 63, and 4 upper end of the first pin passes through the first pin
Through hole 61, for 5 upper end of second pin by second pin through hole 62,1 lower surface of ceramic piece is logical across ceramic piece
Via hole 63.Small-power resistance further includes having resin (not shown), and tabletting covers 2 contact surface of thick film resistive layer and 3 surrounding of tabletting
It is molded with resin.
First pin 4 and second pin 5 are L-shaped, and the first pin 4 is located at 1 left side top of ceramic piece, second pin 5
Positioned at 1 right side top of ceramic piece.First pin 4 and second pin 5 are rotated pair centered on 1 geometric center of ceramic piece
Claim.First pin, 4 upper end is equipped with the first welding hole 41, and 5 upper end of second pin is equipped with the second welding hole 51.6 leading flank of shell is left
End is equipped with the first fixing seat 64, and 6 trailing flank right end of shell is equipped with the second fixing seat 65, the first fixing seat 64 and the second fixing seat 65
The rotational symmetry centered on 6 geometric center of shell.Ceramic piece 1 and tabletting 3 are 96% alumina ceramics substrate, ceramic piece
1 thickness 1.20mm long 38mm wide 11.5mm, 3 thickness 1mm long 28mm wide 9.5mm of tabletting.
The technical program, resistance can bear 25W/50 DEG C -50W/30 DEG C, 0.24 Ω -1M Ω of resistance value range, medium it is resistance to
Pressure bears alternating voltage 3500VAC, maximum functional DC voltage 1500VDC, precision 1%-10%.
It is covered above thick film resistive layer by tabletting, shrinkage causes after heat expansion, cooling when dielectric resin material being avoided to be molded
Single-layer ceramic thermally conductive sheet deformation, thick film resistive layer occur phenomenon of rupture, improve product injection molding after dielectric resin material shrink and
Caused bottom plate unevenness phenomenon improves flatness, and ceramic piece lower surface leakage shell, facilitates resistance lower surface
It is contacted on existing radiator, drops low-resistance heat.Both first pin and second pin rotational symmetry are arranged in ceramics
Thermally conductive sheet both ends, it is relatively stable in grafting, be not easy to shake.Be equipped with welding hole on the first pin and second pin, it is convenient into
Row processing welding uses.It is equipped with fixing seat in shell, is easily installed in available circuit plate or other positions, fixing seat and pin
It is staggered, forms Corner Strapped after grafting and mounting-fixing base, and to easily seat is fixed being fixed after grafting.
In the present embodiment, which also can be used silica gel, and silica gel is applied to tabletting covering thick film resistive layer
Contact surface and tabletting surrounding.
The advantage of the utility model is:
Compared with the prior art, the use of the new type will be covered above thick film resistive layer by tabletting, avoid insulating resin material
Shrinkage causes the deformation of single-layer ceramic thermally conductive sheet, thick film resistive layer that phenomenon of rupture occurs after heat expansion, cooling when material, improves product note
After modeling dielectric resin material shrink caused by bottom plate unevenness phenomenon, and ceramic piece lower surface leak outside shell, facilitate by
Resistance lower surface is contacted on existing radiator, drops low-resistance heat.
The preferred embodiment of the utility model is enumerated above, is not intended to limit the utility model, it is all practical new at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the protection of the utility model within the spirit and principle of type
Within the scope of.
Claims (9)
1. a kind of noninductive small-power resistance of RSH type thick film, it is characterised in that the resistance includes ceramic piece, thick-film resistor
Layer, tabletting, the first pin, second pin and shell,
First pin is soldered to ceramic piece upper surface left end, and the second pin is soldered to ceramic piece upper surface
Right end, thick film resistive layer printing sinter to ceramic piece upper surface, and thick film resistive layer left end connect with the first pin,
Thick film resistive layer right end is connect with second pin,
The tabletting is covered in above thick film resistive layer, the shell by dielectric resin material be molded the first pin lower end of package,
Second pin lower end, ceramic piece, thick film resistive layer and tabletting form, and housing upper surface is equipped with the first pin through hole, the
Two pin through holes, housing lower surface are equipped with ceramic piece through hole, and first pin upper end is passed through by the first pin
Hole, by second pin through hole, ceramic piece lower surface passes through ceramic piece and passes through for the second pin upper end
Hole.
2. small-power resistance according to claim 1, it is characterised in that the small-power resistance further includes having silica gel, the pressure
Piece covering thick film resistive layer contact surface and tabletting surrounding are coated with silica gel.
3. small-power resistance according to claim 1, it is characterised in that the small-power resistance further includes having resin, the pressure
Piece covering thick film resistive layer contact surface and tabletting surrounding are molded with resin.
4. small-power resistance according to claim 3, it is characterised in that the ceramic piece and tabletting are alumina ceramics
Substrate.
5. small-power resistance according to claim 4, it is characterised in that first pin and second pin are L-shaped, institute
It states the first pin and is located at top on the left of ceramic piece, the second pin is located at top on the right side of ceramic piece.
6. small-power resistance according to claim 5, it is characterised in that first pin and second pin are led with ceramics
Rotational symmetry centered on backing geometric center.
7. small-power resistance according to claim 6, it is characterised in that first pin upper end is equipped with the first welding hole,
The second pin upper end is equipped with the second welding hole.
8. small-power resistance according to claim 7, it is characterised in that it is fixed that shell leading flank left end is equipped with first
Seat, shell trailing flank right end are equipped with the second fixing seat, and first fixing seat and the second fixing seat are with shell geometric center
Symmetrically.
9. small-power resistance according to claim 8, it is characterised in that the ceramic piece and tabletting aoxidize for 96%
Aluminium porcelain base, the ceramic piece thickness 1.20mm long 38mm wide 11.5mm, the tabletting thickness 1mm long 28mm wide 9.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820800632.XU CN208189317U (en) | 2018-05-25 | 2018-05-25 | A kind of noninductive small-power resistance of RSH type thick film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820800632.XU CN208189317U (en) | 2018-05-25 | 2018-05-25 | A kind of noninductive small-power resistance of RSH type thick film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208189317U true CN208189317U (en) | 2018-12-04 |
Family
ID=64427707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820800632.XU Active CN208189317U (en) | 2018-05-25 | 2018-05-25 | A kind of noninductive small-power resistance of RSH type thick film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208189317U (en) |
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2018
- 2018-05-25 CN CN201820800632.XU patent/CN208189317U/en active Active
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