CN207233488U - A kind of surface mount fusing resistor - Google Patents
A kind of surface mount fusing resistor Download PDFInfo
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- CN207233488U CN207233488U CN201721216721.1U CN201721216721U CN207233488U CN 207233488 U CN207233488 U CN 207233488U CN 201721216721 U CN201721216721 U CN 201721216721U CN 207233488 U CN207233488 U CN 207233488U
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- layer
- overcurrent protection
- protection function
- function layer
- resistive
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Abstract
The utility model discloses a kind of surface mount fusing resistor, including insulating substrate, two termination electrodes, interior electrode, resistive layer, overcurrent protection function layer and encapsulated layer, resistive layer and the overcurrent protection function layer is located at insulating substrate upper surface, two termination electrodes are electrically connected positioned at resistive layer and overcurrent protection function layer side and with resistive layer and overcurrent protection function layer respectively, the interior electrode is electrically connected positioned at resistive layer and overcurrent protection function layer opposite side and with resistive layer and overcurrent protection function layer respectively, the encapsulated layer is covered in the resistive layer, overcurrent protection function layer, the region of functional layer is leaned in interior electrode and termination electrode.Surface mount fusing resistor provided by the utility model, compared with conventional fusing resistor, its appearance and size is smaller, is easy to produce in enormous quantities, its overcurrent protection function layer fusing time under abnormal current is very fast, security higher.
Description
Technical field
It the utility model is related to fusing resistor technical field, and in particular to a kind of surface mount fusing resistor.
Background technology
The structure of current fusing resistor is：The both ends of plug are cased with cap, and B alloy wire is wound with plug, B alloy wire
Both ends are connected with two blocks respectively, and flame retardant paint is externally coated with plug, block and B alloy wire.When the electric current by resistor
Extremely, when and current value is larger more than its rated current, B alloy wire fever makes resistor temperature be quickly raised to B alloy wire fusing point
Temperature, produces fusing before resistor surface and its surrounding environment carry out abundant heat exchange, plays the purpose of protection circuit.
But current fusing resistor appearance and size is larger, complicated, it is difficult to produced in enormous quantities, therefore existing table
Face paste dress fusing resistor also needs to further improve.
Utility model content：
It is larger for above-mentioned existing surface mount fusing resistor appearance and size, it is complicated, it is difficult to which it is raw to carry out high-volume
Production, the technical problem to be solved by the present invention is to provide a kind of surface mount fusing resistor, this surface mount fusing resistor exists
When circuit works normally, for its overcurrent protection function layer internal resistance relative resistance layer, can be neglected, it is equivalent to resistor,
When occurring abnormal current in circuit, and current value exceed its rated current it is larger when, its overcurrent protection function layer is in abnormal current
Under, fuse soon, play the purpose of protection circuit.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of surface mount fusing resistor, including it is exhausted
Edge substrate, two termination electrodes, interior electrode, resistive layer, overcurrent protection function layer and encapsulated layer, the resistive layer and overcurrent protection work(
Ergosphere is located at insulating substrate upper surface, two termination electrodes respectively positioned at resistive layer and overcurrent protection function layer side and with electricity
Resistance layer and overcurrent protection function layer are electrically connected, the interior electrode respectively positioned at resistive layer and overcurrent protection function layer opposite side and with
Resistive layer and overcurrent protection function layer are electrically connected, and the encapsulated layer is covered in the resistive layer, overcurrent protection function layer, interior electrode
With the region that functional layer is leaned in termination electrode.
The preferred solution of such scheme is：The insulating substrate upper and lower surface be provided with resistive layer, overcurrent protection function layer,
Interior electrode and encapsulated layer.
The preferred solution of such scheme is：At least one resistive layer and overcurrent protection function layer series connection, it is described
For resistive layer with the overcurrent protection function layer to be spaced, the resistive layer and the overcurrent protection function number of layers can be single
Number, or even numbers.
The preferred solution of such scheme is：Heat-insulating function layer is provided between the functional layer and the insulating substrate.
The preferred solution of such scheme is：The overcurrent protection function layer surface is provided with arc-suppression function layer.
The preferred solution of such scheme is：The overcurrent protection function layer is more overcurrent protection function layer parallel-connection structure.
The preferred solution of such scheme is：The resistive layer can be thick film resistive layer, thin film resistive layer, metal or alloy
One or more in piece, carbon film etc..
The preferred solution of such scheme is：The overcurrent protection function layer is thick film metal layer, thin film metal layer, metal
One or more in piece, wire etc..
The utility model has following advantages and effect compared with the prior art：
1. surface mount fusing resistor provided by the utility model, compared with conventional fusing resistor, its appearance and size compared with
It is small, it is easy to produce in enormous quantities, its overcurrent protection function layer fusing time under abnormal current is very fast, security higher.
2. surface mount fusing resistor provided by the utility model, compared with conventional fusing resistor, it insulate after fusing
Impedance is much larger, and there is no secondary arcing risk.
Brief description of the drawings
Attached drawing 1 is the first structure schematic diagram of surface mount fusing resistor in embodiment 1；
Attached drawing 2 is the second structure diagram of surface mount fusing resistor in embodiment 1；
Attached drawing 3 is the first structure schematic diagram of surface mount fusing resistor in embodiment 2；
Attached drawing 4 is the second structure diagram of surface mount fusing resistor in embodiment 2；
Attached drawing 5 is the first structure schematic diagram of surface mount fusing resistor in embodiment 3；
Attached drawing 6 is the second structure diagram of surface mount fusing resistor in embodiment 3.
In figure：1st, insulating substrate；2nd, termination electrode；3rd, interior electrode；4th, resistive layer；5th, overcurrent protection function layer；6th, encapsulated layer.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.It should be noted that
It is used to help understand the utility model for the explanation of these embodiments, but does not form the restriction to the utility model.This
Outside, as long as technical characteristic involved in each embodiment of the utility model disclosed below does not form conflict each other
It can be mutually combined.
Embodiment 1：A kind of surface mount fusing resistor of the present embodiment, including insulating substrate 1, two termination electrode 2, interior electricity
Pole 3, resistive layer 4, overcurrent protection function layer 5 and encapsulated layer 6, the resistive layer 4 and overcurrent protection function layer 5 are located at insulating substrate
1 upper surface, two termination electrodes 2 respectively positioned at resistive layer 4 and 5 side of overcurrent protection function layer and with resistive layer 4 and overcurrent
Defencive function layer 5 is electrically connected, and the interior electrode 3 is respectively positioned at resistive layer 4 and 5 opposite side of overcurrent protection function layer and and resistive layer
4 and overcurrent protection function layer 5 be electrically connected, the encapsulated layer 6 is covered in the resistive layer 4, overcurrent protection function layer 5, interior electrode
3 and two termination electrodes 2 in lean on functional layer region.
Wherein, 1 upper and lower surface of insulating substrate is provided with resistive layer 4, overcurrent protection function layer 5, interior electrode 3 and encapsulated layer
6。
Wherein, at least one resistive layer 4 and overcurrent protection function layer 5 are connected, and resistive layer 4 is with overcurrent protection function layer 5
Be spaced, resistive layer 4 and 5 number of overcurrent protection function layer can odd number, or even numbers.
Wherein, it is provided with heat-insulating function layer between overcurrent protection function layer 5 and insulating substrate 1.
Wherein, 5 surface of overcurrent protection function layer is provided with arc-suppression function layer.
Wherein, overcurrent protection function layer 5 is more overcurrent protection function layer parallel-connection structure.
Wherein, resistive layer 4 can be one kind or more in thick film resistive layer, thin film resistive layer, metal or alloy piece, carbon film etc.
Kind.
Wherein, overcurrent protection function layer 5 for one kind in thick film metal layer, thin film metal layer, sheet metal, wire etc. or
It is a variety of.
Embodiment 2：A kind of surface mount fusing resistor of the present embodiment, including the termination electrode 2, two of insulating substrate 1, two
Interior 3, two resistive layers 4 of electrode, overcurrent protection function layer 5 and encapsulated layer 6, two resistive layers 4 and overcurrent protection function layer 5 are located at
1 upper surface of insulating substrate, and overcurrent protection function layer 5, among two resistive layers 4, two termination electrodes 2 are located at two respectively
4 side of resistive layer is simultaneously electrically connected with two resistive layers 4, and two interior electrodes 3 are located at two 4 opposite sides of resistive layer and overcurrent respectively
Defencive function layer 5 is simultaneously electrically connected with two resistive layers 4 and overcurrent protection function layer 5, and encapsulated layer 6 is covered in described two resistive layers
4th, the region of functional layer is leaned in 5, two interior electrode 3 of overcurrent protection function layer and two termination electrodes 2.
Wherein, 1 upper and lower surface of insulating substrate is provided with resistive layer 4, overcurrent protection function layer 5, interior electrode 3 and encapsulated layer
6。
Wherein, at least one resistive layer 4 and overcurrent protection function layer 5 are connected, and resistive layer 4 is with overcurrent protection function layer 5
Be spaced, resistive layer 4 and 5 number of overcurrent protection function layer can odd number, or even numbers.
Wherein, it is provided with heat-insulating function layer between overcurrent protection function layer 5 and insulating substrate 1.
Wherein, 5 surface of overcurrent protection function layer is provided with arc-suppression function layer.
Wherein, overcurrent protection function layer 5 is more overcurrent protection function layer parallel-connection structure.
Wherein, resistive layer 4 can be one kind or more in thick film resistive layer, thin film resistive layer, metal or alloy piece, carbon film etc.
Kind.
Wherein, overcurrent protection function layer 5 for one kind in thick film metal layer, thin film metal layer, sheet metal, wire etc. or
It is a variety of.
Embodiment 3：A kind of surface mount fusing resistor of the present embodiment, including the termination electrode 2, two of insulating substrate 1, two
Interior electrode 3,4, two overcurrent protection function layers 5 of resistive layer and encapsulated layer 6, resistive layer 4 and two overcurrent protection functions 5 are located at
1 upper surface of insulating substrate, and resistive layer 4, among two overcurrent protection function layers 5, two termination electrodes 2 are located at two respectively
5 side of overcurrent protection function layer is simultaneously electrically connected with two overcurrent protection function layers 5, and two interior electrodes 3 are located at 4 He of resistive layer respectively
Two 5 opposite sides of overcurrent protection function layer are simultaneously electrically connected with resistive layer 4 and two overcurrent protection function layers 5, and the encapsulated layer 6 covers
It is placed on the region that functional layer is leaned in the interior electrode 3 of 5, two, overcurrent protection function layer of resistive layer 4, two and two termination electrodes 2.
Wherein, 1 upper and lower surface of insulating substrate is provided with resistive layer 4, overcurrent protection function layer 5, interior electrode 3 and encapsulated layer
6。
Wherein, at least one resistive layer 4 and overcurrent protection function layer 5 are connected, and resistive layer 4 is with overcurrent protection function layer 5
Be spaced, resistive layer 4 and 5 number of overcurrent protection function layer can odd number, or even numbers.
Wherein, it is provided with heat-insulating function layer between overcurrent protection function layer 5 and insulating substrate 1.
Wherein, 5 surface of overcurrent protection function layer is provided with arc-suppression function layer.
Wherein, overcurrent protection function layer 5 is more overcurrent protection function layer parallel-connection structure.
Wherein, resistive layer 4 can be one kind or more in thick film resistive layer, thin film resistive layer, metal or alloy piece, carbon film etc.
Kind.
Wherein, overcurrent protection function layer 5 for one kind in thick film metal layer, thin film metal layer, sheet metal, wire etc. or
It is a variety of.
The embodiment of the utility model is explained in detail above in association with attached drawing, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, it is right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall within the scope of protection of the utility model.
Claims (8)
- A kind of 1. surface mount fusing resistor, it is characterised in that：Including insulating substrate, two termination electrodes, interior electrode, resistive layer, Overcurrent protection function layer and encapsulated layer, resistive layer and the overcurrent protection function layer is located at insulating substrate upper surface, described in two Termination electrode is electrically connected positioned at resistive layer and overcurrent protection function layer side and with resistive layer and overcurrent protection function layer respectively, described Interior electrode is electrically connected positioned at resistive layer and overcurrent protection function layer opposite side and with resistive layer and overcurrent protection function layer, institute respectively State encapsulated layer and be covered in the region that functional layer is leaned in the resistive layer, overcurrent protection function layer, interior electrode and termination electrode.
- 2. surface mount fusing resistor according to claim 1, it is characterised in that：The insulating substrate upper and lower surface is set There are resistive layer, overcurrent protection function layer, interior electrode and encapsulated layer.
- 3. surface mount fusing resistor according to claim 1 or 2, it is characterised in that：At least one resistive layer and Overcurrent protection function layer series connection, the resistive layer with the overcurrent protection function layer to be spaced, the resistive layer with The overcurrent protection function number of layers can odd number, or even numbers.
- 4. surface mount fusing resistor according to claim 1 or 2, it is characterised in that：The functional layer and the insulation Heat-insulating function layer is provided between substrate.
- 5. surface mount fusing resistor according to claim 1 or 2, it is characterised in that：The overcurrent protection function layer table Face is provided with arc-suppression function layer.
- 6. surface mount fusing resistor according to claim 1 or 2, it is characterised in that：The overcurrent protection function layer is More overcurrent protection function layer parallel-connection structure.
- 7. surface mount fusing resistor according to claim 1 or 2, it is characterised in that：The resistive layer can be thick film electricity One or more in resistance layer, thin film resistive layer, metal or alloy piece, carbon film etc..
- 8. surface mount fusing resistor according to claim 1 or 2, it is characterised in that：The overcurrent protection function layer is One or more in thick film metal layer, thin film metal layer, sheet metal, wire etc..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721216721.1U CN207233488U (en) | 2017-09-21 | 2017-09-21 | A kind of surface mount fusing resistor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721216721.1U CN207233488U (en) | 2017-09-21 | 2017-09-21 | A kind of surface mount fusing resistor |
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| Publication Number | Publication Date |
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| CN207233488U true CN207233488U (en) | 2018-04-13 |
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| CN201721216721.1U Active CN207233488U (en) | 2017-09-21 | 2017-09-21 | A kind of surface mount fusing resistor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833709A (en) * | 2017-09-21 | 2018-03-23 | 苏州达晶微电子有限公司 | A kind of surface mount fusing resistor |
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2017
- 2017-09-21 CN CN201721216721.1U patent/CN207233488U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833709A (en) * | 2017-09-21 | 2018-03-23 | 苏州达晶微电子有限公司 | A kind of surface mount fusing resistor |
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