CN102779595A - Overcurrent and overtemperature protection element - Google Patents
Overcurrent and overtemperature protection element Download PDFInfo
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- CN102779595A CN102779595A CN2011101296150A CN201110129615A CN102779595A CN 102779595 A CN102779595 A CN 102779595A CN 2011101296150 A CN2011101296150 A CN 2011101296150A CN 201110129615 A CN201110129615 A CN 201110129615A CN 102779595 A CN102779595 A CN 102779595A
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Abstract
The invention discloses an overcurrent and overtemperature protection element, comprising: a first conductive member which comprises a power input part and a first insulation part for limiting the input of the current only through the power input part; a second conductive member which comprises at least two power output parts and a second insulation part for limiting the output of the current only through the power output parts, wherein the power output parts are insulated from each other by using the second insulation part; a resistive element stacked between the first conductive member and the second conductive member; a power input part electrode tip electrically connected with the power input part, and a power output part electrode tip electrically connected with the power output part. According to the invention, multiport type overcurrent and overtemperature protection element disclosed herein can simultaneously provide overcurrent and overtemperature protection for two or more loops.
Description
Technical field
The invention relates to a kind of passive component, refer to about a kind of overcurrent and over-temperature protection element especially.
Background technology
Thermistor is used to protective circuit, makes it avoid damaging because of overheated or the overcurrent of flowing through.Thermistor comprise usually two electrodes and the position at two interelectrode resistance materials.This resistance material is the tool low-resistance value when room temperature, and rises to when having overcurrent to produce on a critical temperature or the circuit when temperature, and its resistance value can jump more than thousands of times at once, suppresses overcurrent thus to pass through, to reach the purpose of circuit protection.
When no longer including the situation of overcurrent after room temperature falls back in temperature or on the circuit, thermistor can return back to low resistance state, and makes circuit normal running again.The reusable advantage of this kind makes thermistor replace fuse, and more is widely used on the high density electronic circuit.
Following electronic product will be towards having light, thin, short, little trend development, so that electronic product can more be tending towards miniaturization.And passive component (passive component) shared area in electronic product is the hugest, so if can integrate passive component effectively, can make that electronic product can reach gently, thin, short, little function.
Yet the design of existing thermistor element all is designed to main with simple function and single loop.Therefore, when electronic product need be protected electronic product to the thermistor element of difference in functionality demand, the thermistor element that most simple functions only can be set was in electronic product.Therefore the existing practice not only expends the cost of manufacturing, takies the whole volume of electronic product especially.
Summary of the invention
The present invention provides a kind of overcurrent and over-temperature protection element of multiport type, and the overcurrent and the over-temperature protection function in two or more loops can be provided simultaneously.
Overcurrent of one embodiment of the invention and over-temperature protection element comprise: one first conductive member, one second conductive member, a resistive element, at least one power input part electrode tip and at least two power supply efferent electrode tips.First insulation division that first conductive member comprises at least one power input part and only gets into from this power input part in order to current limit.Second conductive member comprises at least two power supply efferents and second insulation division of only exporting from this power supply efferent in order to current limit, and each power supply efferent utilizes this second insulation division to be electrically isolated from one another.Resistive element be stacked at first conductive member and second conductive member between, and have the behavior of positive temperature or negative temperature coefficient.The power input part electrode tip is electrically connected this power input part, and power supply efferent electrode tip is electrically connected this power supply efferent, as external power interface.
Wherein, this protection component comprises:
First dielectric film is located at this first conductive member surface; And
Second dielectric film is located at this second conductive member surface;
Wherein this power input part electrode tip at least partly is located at this first dielectric film and second dielectric film surface, and power supply efferent electrode tip at least partly is located at this first dielectric film and second dielectric film surface.
Wherein, This power input part electrode tip comprises a pair of first electrode foil plate and first conductive connection part; Should be divided on this first dielectric film and second dielectric film first electrode foil plate; This first conductive connection part couples this to first electrode foil plate and first conductive member along the power input part end face; This power supply efferent electrode tip comprises a pair of second electrode foil plate and second conductive connection part, and this is divided on first dielectric film and second dielectric film second electrode foil plate, and this second conductive connection part couples this to second electrode foil plate and second conductive member along this power supply efferent end face.
Wherein, this first conductive connection part and second conductive connection part are located at the set corresponding conductive hole surface, side of this overcurrent and over-temperature protection element respectively.
Wherein, this first conductive connection part and second conductive connection part are copper, gold, silver, nickel, tin or its alloys that is plated to electroless-plating or electro-plating method.
Wherein, this first insulation division comprises the part that is located on around the corresponding conductive hole of second conductive connection part, and this second insulation division comprises the part that is located on around the corresponding conductive hole of first conductive connection part.
Wherein, this first insulation division and second insulation division are the breach that produces via cutting, laser or photolithography techniques patterning mode.
Wherein, this power input part electrode tip, resistive element and power supply efferent electrode tip form the connected in electrical series structure.
Wherein, this resistive element comprises macromolecular material, this macromolecular material is polyethylene, polypropylene, gather fluorine alkene, aforesaid mixture and co-polymer one of them.
Wherein, this resistive element comprises distribution conducting particles wherein, and this conducting particles comprises the mixture of metallic, carbon contg particle, metal oxide, metal carbides, metal boride, metal nitride or previous materials.
Wherein, this first dielectric film and second dielectric film are epoxy resin composite material or pi composite material.
Wherein, this protection component comprises insulating element, with this power input part electrode tip and the mutual electrical isolation of power supply efferent electrode tip.
Wherein, this insulating element is anti-welding coating member.
Wherein, this protection component is the SMD LED surface-mount device LED element.
Wherein, This power input part electrode tip and power supply efferent electrode tip are plug-in type strip electrodes; This power input part electrode tip connects this first conductive member surface and outwards extends, and this power supply efferent electrode tip connects this second conductive member surface and outwards extends.
Overcurrent of another embodiment of the present invention and over-temperature protection element comprise: the composition element of a plurality of aforementioned first conductive members, resistive element and second conductive member, be electrically connected the power input part of first conductive member of this composition element respectively at least one power input part electrode tip, be electrically connected respectively at least two power supply efferent electrode tips of the power supply efferent of second conductive member of this composition element.Wherein said a plurality of composition element is provided with dielectric film each other.Wherein, a plurality of resistive elements in power input part electrode tip, the composition element and power supply efferent electrode tip form electric parallel-connection structure.
In overcurrent of the present invention and the over-temperature protection element; Utilize the mode of patterning designs such as cutting, laser or photolithography techniques; Element electrode is distinguished into a plurality of isolated areas; To be divided into single element region two or more electrical characteristic isolated areas, arrange in pairs or groups simultaneously hot pressing and printed-board technology can be made into surface stuck element (but not as limit).Therefore, the overcurrent of multiport type of the present invention and over-temperature protection element are overcurrent and the over-temperature protection functions that two or more loops can be provided simultaneously.
Description of drawings
Figure 1A to 1D is the overcurrent and the over-temperature protection element of first embodiment of the invention.
Fig. 2 A to 2C is the overcurrent and the over-temperature protection element of second embodiment of the invention.
Fig. 3 A and Fig. 3 B are the overcurrent and the over-temperature protection element of third embodiment of the invention.
Fig. 4 A and Fig. 4 B are the overcurrent and the over-temperature protection element of fourth embodiment of the invention.
Fig. 5 is the overcurrent and the over-temperature protection element of fourth embodiment of the invention.
Wherein, description of reference numerals is following:
10,30,40,50 overcurrent and over-temperature protection element
11 resistive elements
12 first conductive members
12a, 12b power input part
13 first insulation divisions
14 second conductive members
14a, 14b power supply efferent
15 second insulation divisions
16a, 16b dielectric film
17,27 vias
18,20 electrode foil plates
19 power input part electrode tips
21 conductive connection parts
22 insulating elements
23 power supply efferent electrode tips
31 resistive elements
32 first conductive members
34 second conductive members
The 32a power input part
34a, 34b, 34c power supply efferent
41 resistive elements
42 first conductive members
44 second conductive members
42a, 42b power input part
44a, 44b, 44c, 44d power supply efferent
46a, 46b, 46c dielectric film
51 resistive elements
52 first conductive members
54 second conductive members
53 power input part electrode tips
59 power supply efferent electrode tips
Embodiment
See also Figure 1A to Fig. 1 C, Figure 1A is overcurrent and the three-dimensional exploded view of over-temperature protection element 10 of the dual-port of first embodiment of the invention.Figure 1B is the three-dimensional combination figure of first embodiment of overcurrent and over-temperature protection element 10 of the dual-port of first embodiment of the invention.Fig. 1 C is the face upwarding stereogram of combination of overcurrent and the resistive element 11 in the over-temperature protection element 10 and upper and lower conductive member 12,14 of the dual-port of first embodiment of the invention.Fig. 1 D is overcurrent and the equivalent circuit diagram of over-temperature protection element 10 of the dual-port of first embodiment of the invention.
Aforementioned overcurrent and over-temperature protection element 10 are stepped constructions, and it comprises: the resistive element of a sheet-type 11, first conductive member 12, second conductive member 14, the first dielectric film 16a, the second dielectric film 16b, power input part electrode tip 19 and power supply efferent electrode tip 23.Resistive element 11 is to be stacked between first conductive member 12 and second conductive member 14, and the range upon range of first dielectric film 16a of upper and lower difference and the second dielectric film 16b.
The overcurrent of present embodiment and over-temperature protection element 10 are rectangular configuration, and four sides respectively have semicircle via 17,27.First conductive member 12 comprises two power input part 12a, the 12b at opposite side via 17 places that are placed in and is used for first insulation division 13 that current limit only gets into from this power input part 12a, 12b.Second conductive member 14 comprises two power supply efferent 14a, the 14b at another opposite side via 27 places that are placed in and is used for second insulation division 15 that current limit is only exported from this power supply efferent 14a, 14b.In the present embodiment, first insulation division 13 is located on power supply efferent 14a, the pairing via 27 of 14b.15 of second insulation divisions are located on power input part 12a, the pairing via 17 of 12b, and power supply efferent 14a, the 14b of second conductive member 14 formed electrical isolation each other.
Power input part electrode tip 19 comprises the electrode foil plate 18 of being located at the first dielectric film 16a and second dielectric film 16b surface respectively; And the conductive connection part 21 (for clearly demonstrating, Figure 1A and 1C do not form the situation of conductive connection part 21) that is electrically connected power input part 12a, 12b.Power supply efferent electrode tip 23 comprises the electrode foil plate 20 of being located at the first dielectric film 16a and second dielectric film 16b surface respectively, and the conductive connection part 21 that is electrically connected power supply efferent 14a, 14b.Power input part electrode tip 19 (being equivalent to electrode foil plate 18) and power supply efferent electrode tip 23 (being equivalent to electrode foil plate 20) form electrical isolation with insulating element 22.
Above-mentioned resistive element 11 can be a polymer material layer, resistance elements, capacitance material layer or the electrical sensative material bed of material etc.Present embodiment is formed by having the macromolecular material that conducting particles is scattered in wherein, and it has the behavior of positive temperature or negative temperature coefficient.Be applicable to that macromolecular material of the present invention comprises: polyethylene, polypropylene, gather fluorine alkene, aforesaid mixture and co-polymer etc.Conducting particles can be metallic, carbon contg particle, metal oxide, metal carbides, for example: titanium carbide (TiC), tungsten carbide (WC), vanadium carbide (VC), zirconium carbide (ZrC), niobium carbide (NbC), ramet (TaC), molybdenum carbide (MoC) and hafnium carbide (HfC); Or be selected from metal boride, for example: titanium boride (TiB
2), vanadium boride (VB
2), zirconium boride (ZrB
2), niobium (Nb) boride (NbB
2), molybdenum boride (MoB
2) and hafnium boride (HfB
2); Or be selected from metal nitride, for example: zirconium nitride (ZrN), or the mixture of previous materials.
In one embodiment of the invention; First conductive member 12 and second conductive member 14 can be by planar metal films; Mode through the design of patternings such as general cutting, laser or photolithography techniques produces breach (breach that the stripping metal film produces), and forms first insulation division 13 and second insulation division 15 shown in Fig. 1 C shown in Figure 1A.The material of above-mentioned first conductive member 12 and second conductive member 14 can be alloy or the multilayer material that nickel, copper, zinc, silver, gold and aforementioned metal are formed.
Above-mentioned breach is after the moulding of stripping metal film; Can use various good then property glued membrane (like epoxy resin composite material or pi composite material); That is dielectric film 16a, 16b, with the metal copper film of the combination of this resistive element 11, first conductive member 12 and second conductive member 14 and outer each a slice up and down through the hot-press solidifying driving fit.Afterwards, can outer field copper film up and down be produced the electrode foil plate 18 corresponding to power input part 12a, 12b through engraving method, and corresponding to the electrode foil plate 20 of power supply efferent 14a, 14b.
Power input part electrode tip 19 and power supply efferent electrode tip 23 can form up and down through via or the comprehensive plating mode that cuts face, and the electrode selectivity vertical conducting in each district is electrically connected; Be electrically connected power input part 12a, 12b and power input part electrode tip 19 thus, and power supply efferent 14a, 14b and power supply efferent electrode tip 23.Afterwards, between each power input part electrode tip 19 of above and below and power supply efferent electrode tip 23, can general anti-welding coating coating form the insulation effect, form insulating element 22.
Below be to form with via that to be electrically connected be that example describes: electroless-plating capable of using on the hole wall of via 17,27 (electroless plating) or electro-plating method plate one deck conducting film (like copper or gold) and form conductive connection part 21, connect the purpose that upper/lower electrode is electrically connected to reach.The conductive connection part 21 of via 17 couples first conductive member 12 and two electrode foil plates 18 up and down, and the conductive connection part 21 of via 27 couples second conductive member 14 and two electrode foil plates 20 up and down.The cross sectional shape of via 17,27 can be circle, semicircle, 1/4 circle, arc, square, rhombus, rectangle, triangle or polygon, is to be that example is done an explanation with the semicircle in the present embodiment.In addition; Via also can be located among the element 10; Or be electrically connected power input part and power input part electrode tip with the blind hole mode, and and power supply efferent and power supply efferent electrode tip, the various relevant modes that are electrically connected are the present invention and contain in the field of the present invention such as.
Comprehensive speech; Power input part electrode tip 19 comprises pair of electrodes paillon foil 18 and conductive connection part 21 (being conducting film); This is divided on this first dielectric film 16a and the second dielectric film 16b electrode foil plate 18, and conductive connection part 21 couples this to the electrode foil plate 18 and first conductive member 12 along power input part 12a, 12b end face.Power supply efferent electrode tip 23 comprises pair of electrodes paillon foil 20 and conductive connection part 21; This is divided on the first dielectric film 16a and the second dielectric film 16b electrode foil plate 20, and this conductive connection part 21 couples this to the electrode foil plate 20 and second conductive member 14 along this power supply efferent 14a, 14b end face.Power input part electrode tip 19 and power supply efferent electrode tip 23 mainly are arranged at the element end face; Respectively with first conductive member 12 and 14 electric joining of second conductive member; And extend to element 10 surfaces simultaneously, be arranged at the surface of the first dielectric film 16a and the second dielectric film 16b with the mode of circuit layout.
First conductive member 12 and second conductive member 14 see through respectively said insulation division 13,15 with said via 27,17 on conductive connection part 21 produce electrical isolation.Thus, but said insulation division 13,15 current limit (shown in arrow among Figure 1B) I
1a, I
2aOnly get into via the power input part 12a first conductive member 12,12b from power input part electrode tip 19; Flow to two power supply efferent 14a, the 14b in second conductive member 14 afterwards respectively through resistive element 11; Then derive by two power supply efferent electrode tips 23 respectively; That is power input part electrode tip 19, resistive element 11 and power supply efferent electrode tip 23 formation cascaded structures, so that the present invention can reach a kind of defencive function of overcurrent and excess temperature of dual-port.
Yet, above-mentioned electric current (I
1a, I
2a) flow direction be merely illustration, the flow of current direction also can with above-mentioned electric current (I
1a, I
2a) flow direction opposite, its function is also identical.Perhaps, overcurrent of the present invention and over-temperature protection element also can use conversely.
Between the power input part electrode tip 19 of present embodiment and power supply efferent electrode tip 23 and first conductive member 12 and second conductive member 14 is that dielectric film 16a and 16b are set, and utilizes conductive connection part 21 to carry out being electrically connected therebetween.Yet the technological personage alternate manner also capable of using of haveing the knack of this area forms being electrically connected of electrode, and dielectric film 16a and 16b need not be set.
Fig. 2 A to 2C is the overcurrent and the over-temperature protection element of second embodiment of the invention.Fig. 2 A is overcurrent and the three-dimensional combination figure of over-temperature protection element 30 of three ports of second embodiment of the invention.Fig. 2 B is the stereogram of looking up of combination of overcurrent and the resistive element in the over-temperature protection element 30 31, first conductive member 32 and second conductive member 34 of three ports of second embodiment of the invention.Fig. 2 C is overcurrent and the equivalent circuit diagram of over-temperature protection element 30 of three ports of second embodiment of the invention.The overcurrent of three ports and over-temperature protection element 30 are roughly the same with the overcurrent and the over-temperature protection element 10 of dual-port; Difference is in around: the insulation division 13 of first conductive member 32 of resistive element 31 is located on three vias 27 respectively, is used for current limit and only gets into from power input part 32a; And second conductive member 34 utilize insulation division 15 that second conductive member, 34 electrical isolation are become 3 parts, be used for current limit only from power supply efferent 34a, 34b and 34c output.The flow direction of electric current such as I in the present embodiment
1b, I
2bAnd I
3bShown in.
Fig. 3 A is overcurrent and the stereogram of looking up of the resistive element in the over-temperature protection element 41, first conductive member 42 and second conductive member 44 of four ports of third embodiment of the invention.The insulation division 13 of first conductive member 42 of resistive element 41 is located on four vias 27 (this is the quadrant hole) respectively on every side, is used for current limit and only gets into from power input part 42a, 42b; And second conductive member 44 utilize insulation division 15 that second conductive member, 44 electrical isolation are become 4 parts, to form four power supply efferent 44a, 44b, 44c and 44d.Be similar to first and second embodiment, resistive element 41, first conductive member 42 and second conductive member 44 can be made power input part electrode tip and power supply efferent electrode tip according to similar fashion in the corresponding position, will not repeat at this.Fig. 3 B is overcurrent and the equivalent circuit diagram of over-temperature protection element of four ports of the 3rd embodiment of Fig. 3 A.
In the practical application, similar fashion also capable of using is produced overcurrent and the over-temperature protection element that waits other shape like circle according to different demands, or produces five-port above overcurrent and over-temperature protection element.
With reference to Fig. 4 A; Also can be with the range upon range of setting of composition element of two resistive element 41, first conductive member 42 and second conductive members 44 shown in Fig. 3 A, and make dielectric film 46a, 46b and 46c and power input part electrode tip 19 and power supply efferent electrode tip 23 according to similar fashion.Wherein power input part electrode tip 19 is electrically connected the respectively power input part of first conductive member 42 of this composition element.Power supply efferent electrode tip 23 is electrically connected the respectively power supply efferent of second conductive member 44 of this composition element, and forms the overcurrent and the over-temperature protection element 40 of four ports and tool parallel connection effect.Easy speech, a plurality of resistive elements 41 in power input part electrode tip 19, the composition element and power supply efferent electrode tip 23 form electric parallel-connection structure.Fig. 4 B is the overcurrent of Fig. 4 A and the equivalent circuit diagram of over-temperature protection element 40.
Above-mentioned is the application of SMD LED surface-mount device LED element, yet the element of other type also can adopt technical characterictic of the present invention, to be applicable to different application environments.Fig. 5 is the overcurrent and the over-temperature protection element of another embodiment of the present invention, and it is the embodiment of plug-in type element.Overcurrent and over-temperature protection element 50 comprise resistive element 51, first conductive member 52, second conductive member 54, power input part electrode tip 53 and power supply efferent electrode tip 59.Similarly, resistive element is to be stacked between first conductive member 52 and second conductive member 54.Separate with breach between 2 second conductive members 54, form electrical isolation.Power input part electrode tip 53 is strips, connects first conductive member, 52 surfaces and extends outside.Power supply efferent electrode tip 59 is strips, connects second conductive member, 54 surfaces and outside along equidirectional extension with power input part electrode tip 53.By this, the application of plug-in type overcurrent and over-temperature protection element can be provided.Similarly, power input part electrode tip of the present invention and power supply efferent electrode tip can be revised slightly and be applied to overcurrent and the over-temperature protection element like other patterns such as axle shape or packaging conductive wires.
In addition, the present invention also can utilize the mode that forms insulation division (breach) to form a plurality of power input parts that are electrically isolated from one another equally, forms the situation of the corresponding power supply efferent of each power input part.That is similar single element comprises two independently situation of resistive element.
The present invention can integrate the above overcurrent of two or more ports and over-temperature protection element effectively and increase its scope of application; Moreover the present invention can reduce overcurrent and the shared long-pending body of over-temperature protection element on the circuit board effectively, and reduces the number of solder joint.
The above; Be merely the detailed description of specific embodiment of the present invention and graphic, only characteristic of the present invention is not limited thereto, and all scopes of the present invention should be as the criterion with following claim; All closing in the embodiment of the spirit variation similar of claim of the present invention with it; All should be contained in the category of the present invention, anyly be familiar with this art in the field of the invention, can think easily and variation or modify the claim that all can be encompassed in following this case.
Claims (18)
1. overcurrent and over-temperature protection element, it is characterized in that: this protection component comprises:
One first conductive member, first insulation division that comprises at least one power input part and only get into from this power input part in order to current limit;
One second conductive member comprise at least two power supply efferents and second insulation division of only exporting from this power supply efferent in order to current limit, and each power supply efferent utilizes this second insulation division to be electrically isolated from one another;
One resistive element is stacked between first conductive member and second conductive member, and has the behavior of positive temperature or negative temperature coefficient;
At least one power input part electrode tip is electrically connected this power input part; And
At least two power supply efferent electrode tips are electrically connected this power supply efferent.
2. overcurrent as claimed in claim 1 and over-temperature protection element is characterized in that: this protection component comprises:
First dielectric film is located at this first conductive member surface; And
Second dielectric film is located at this second conductive member surface;
Wherein this power input part electrode tip at least partly is located at this first dielectric film and second dielectric film surface, and power supply efferent electrode tip at least partly is located at this first dielectric film and second dielectric film surface.
3. overcurrent as claimed in claim 2 and over-temperature protection element; It is characterized in that: this power input part electrode tip comprises a pair of first electrode foil plate and first conductive connection part; Should be divided on this first dielectric film and second dielectric film first electrode foil plate; This first conductive connection part couples this to first electrode foil plate and first conductive member along the power input part end face; This power supply efferent electrode tip comprises a pair of second electrode foil plate and second conductive connection part, and this is divided on first dielectric film and second dielectric film second electrode foil plate, and this second conductive connection part couples this to second electrode foil plate and second conductive member along this power supply efferent end face.
4. overcurrent as claimed in claim 3 and over-temperature protection element is characterized in that: this first conductive connection part and second conductive connection part are located at the set corresponding conductive hole surface, side of this overcurrent and over-temperature protection element respectively.
5. overcurrent as claimed in claim 3 and over-temperature protection element is characterized in that: this first conductive connection part and second conductive connection part are copper, gold, silver, nickel, tin or its alloys that is plated to electroless-plating or electro-plating method.
6. overcurrent as claimed in claim 4 and over-temperature protection element; It is characterized in that: this first insulation division comprises the part that is located on around the corresponding conductive hole of second conductive connection part, and this second insulation division comprises the part that is located on around the corresponding conductive hole of first conductive connection part.
7. overcurrent as claimed in claim 2 and over-temperature protection element is characterized in that: this first insulation division and second insulation division are the breach that produces via cutting, laser or photolithography techniques patterning mode.
8. overcurrent as claimed in claim 1 and over-temperature protection element is characterized in that: this power input part electrode tip, resistive element and power supply efferent electrode tip form the connected in electrical series structure.
9. overcurrent as claimed in claim 1 and over-temperature protection element is characterized in that: this resistive element comprises macromolecular material, this macromolecular material is polyethylene, polypropylene, gather fluorine alkene, aforesaid mixture and co-polymer one of them.
10. overcurrent as claimed in claim 1 and over-temperature protection element; It is characterized in that: this resistive element comprises distribution conducting particles wherein, and this conducting particles comprises the mixture of metallic, carbon contg particle, metal oxide, metal carbides, metal boride, metal nitride or previous materials.
11. overcurrent as claimed in claim 2 and over-temperature protection element is characterized in that: this first dielectric film and second dielectric film are epoxy resin composite material or pi composite material.
12. overcurrent as claimed in claim 1 and over-temperature protection element is characterized in that: this protection component comprises insulating element, with this power input part electrode tip and the mutual electrical isolation of power supply efferent electrode tip.
13. overcurrent and over-temperature protection element like claim 12 is characterized in that: this insulating element is anti-welding coating member.
14. overcurrent as claimed in claim 1 and over-temperature protection element is characterized in that: this protection component is the SMD LED surface-mount device LED element.
15. overcurrent as claimed in claim 1 and over-temperature protection element; It is characterized in that: this power input part electrode tip and power supply efferent electrode tip are plug-in type strip electrodes; This power input part electrode tip connects this first conductive member surface and outwards extends, and this power supply efferent electrode tip connects this second conductive member surface and outwards extends.
16. overcurrent and over-temperature protection element, it is characterized in that: this protection component comprises:
A plurality of composition elements, each composition element comprise first conductive member, resistive element and second conductive member; This first conductive member first insulation division of comprising at least one power input part and only getting into wherein from this power input part in order to current limit; This second conductive member comprises at least two power supply efferents and second insulation division of only exporting from this power supply efferent in order to current limit, and each power supply efferent utilizes this second insulation division to be electrically isolated from one another; This resistive element is stacked between first conductive member and second conductive member, and has the behavior of positive temperature or negative temperature coefficient;
At least one power input part electrode tip is electrically connected the respectively power input part of first conductive member of this composition element; And
At least two power supply efferent electrode tips are electrically connected the respectively power supply efferent of second conductive member of this composition element;
Wherein said a plurality of composition element is provided with first dielectric film each other.
17. overcurrent as claimed in claim 16 and over-temperature protection element is characterized in that: be provided with second dielectric film between this composition element and power input part electrode tip and the power supply efferent electrode tip.
18. overcurrent as claimed in claim 16 and over-temperature protection element is characterized in that: a plurality of resistive elements in this power input part electrode tip, the composition element and power supply efferent electrode tip form electric parallel-connection structure.
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| CN201110129615.0A CN102779595B (en) | 2011-05-12 | 2011-05-12 | Overcurrent and overtemperature protection element |
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| CN104319042A (en) * | 2014-10-24 | 2015-01-28 | 深圳市慧瑞电子材料有限公司 | Surface mount type overcurrent protection element and preparation method thereof |
| CN104733144A (en) * | 2015-02-06 | 2015-06-24 | 上海长园维安电子线路保护有限公司 | Surface mounting type circuit protection element and manufacturing method thereof |
| CN104733266A (en) * | 2015-02-15 | 2015-06-24 | 上海长园维安电子线路保护有限公司 | Surface-mounted circuit protection element and manufacturing method |
| CN105576598A (en) * | 2015-02-17 | 2016-05-11 | 上海长园维安电子线路保护有限公司 | Thin type self-control protector and manufacturing method thereof |
| CN108603479A (en) * | 2015-12-17 | 2018-09-28 | Seg汽车德国有限公司 | The starting device equipped with NTC resistance for internal combustion engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104319042A (en) * | 2014-10-24 | 2015-01-28 | 深圳市慧瑞电子材料有限公司 | Surface mount type overcurrent protection element and preparation method thereof |
| CN104733144A (en) * | 2015-02-06 | 2015-06-24 | 上海长园维安电子线路保护有限公司 | Surface mounting type circuit protection element and manufacturing method thereof |
| CN104733144B (en) * | 2015-02-06 | 2017-09-19 | 上海长园维安电子线路保护有限公司 | Surface attaching type circuit protecting element and manufacture method |
| CN104733266A (en) * | 2015-02-15 | 2015-06-24 | 上海长园维安电子线路保护有限公司 | Surface-mounted circuit protection element and manufacturing method |
| CN104733266B (en) * | 2015-02-15 | 2017-10-27 | 上海长园维安电子线路保护有限公司 | A kind of surface attaching type circuit protecting element and manufacture method |
| CN105576598A (en) * | 2015-02-17 | 2016-05-11 | 上海长园维安电子线路保护有限公司 | Thin type self-control protector and manufacturing method thereof |
| CN105576598B (en) * | 2015-02-17 | 2019-02-15 | 上海长园维安电子线路保护有限公司 | It is a kind of slim from control type protector and its manufacturing method |
| CN108603479A (en) * | 2015-12-17 | 2018-09-28 | Seg汽车德国有限公司 | The starting device equipped with NTC resistance for internal combustion engine |
| CN108603479B (en) * | 2015-12-17 | 2020-02-07 | Seg汽车德国有限公司 | Starting device for an internal combustion engine, equipped with an NTC resistor |
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