CN201130650Y - Surface-contact type thin film safety wire structure - Google Patents
Surface-contact type thin film safety wire structure Download PDFInfo
- Publication number
- CN201130650Y CN201130650Y CNU2007203108600U CN200720310860U CN201130650Y CN 201130650 Y CN201130650 Y CN 201130650Y CN U2007203108600 U CNU2007203108600 U CN U2007203108600U CN 200720310860 U CN200720310860 U CN 200720310860U CN 201130650 Y CN201130650 Y CN 201130650Y
- Authority
- CN
- China
- Prior art keywords
- fuse
- type film
- bonding type
- surface bonding
- chain part
- 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
Links
- 239000010409 thin film Substances 0.000 title 1
- 239000000758 substrate Substances 0.000 claims abstract description 36
- 238000002844 melting Methods 0.000 claims description 47
- 230000008018 melting Effects 0.000 claims description 47
- 239000010410 layer Substances 0.000 claims description 31
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 21
- 239000011241 protective layer Substances 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 13
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 description 16
- 239000010949 copper Substances 0.000 description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005538 encapsulation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000002146 bilateral effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Landscapes
- Fuses (AREA)
Abstract
The utility model relates to a surface mount film fuse structure, which is characterized in that a fuse wire line framework is arranged on at least one surface of an insulated substrate, and a fuse link is connected between two corresponding electrodes of the fuse wire line framework; in case an over current passes through the fuse link, a high temperature or a specific temperature can be produced on the fuse link in order to make the latter blow out, so as to achieve the effect of protecting the circuit by blocking the over-current; wherein, at least a space is arranged between the fuse link and the insulated substrate, thus the heat source generated by the fuse link after energizing cannot dissipate due to the heat conduction of the insulated substrate, so as to guarantee that the fuse link blows out when specific current or temperature is reached, and further ensure the effect of circuit protection.
Description
Technical field
The utility model provides a kind of surface bonding type film fuse structure and manufacture method thereof; especially refer to that a kind of this surface bonding type film fuse of can possessing really reaches specific currents or specified temp and causes fusing, with the exceed the quata surface bonding type film fuse structure and the manufacture method thereof of circuit protection effect of electric current of blocking-up.
Background technology
Press; general electric device can be set the maximum electric current that uses; when employed electric current surpasses; might make device impaired or burn; the topmost function of fuse is exactly that the electric current that prevents excess passes through electronic circuit; when the electric current that exceeds the quata flows through fuse, will make its generation high temperature and cause fusing; avoid coming to harm with protective circuit; in existing information; communication; and electric device such as consumption electronic products; mainly utilize printed circuit board (PCB) (Printed Circuit Board; PCB) the electronics spare part is linked together; make its performance allomeric function; along with electric device becomes increasingly complex, the part that needs is more and more, and circuit and part on the printed circuit board (PCB) are also more and more intensive.
At present, the part encapsulation technology of printed circuit board (PCB), mainly with " plug-in type encapsulation (ThroughHole Technology; THT) " and " surface stuck encapsulation (Surface MountedTechnology; be main SMT); wherein plug-in type encapsulates the one side that part is placed in plank; and pin is welded on the another side; this part can need to take a large amount of spaces, and printed circuit board (PCB) is necessary for every pin boring of part, so will account for the space on printed circuit board (PCB) two sides because of pin, and the solder joint of pin is also bigger; On the other hand, the surface stuck encapsulation is with surface sticking assembly (Surface Mount Device, SMD) be positioned on the printed circuit board (PCB) that speckles with glue or tin cream, and then utilize certain heating technique to make assembly be fixed in the surface of printed circuit board (PCB), itself and traditional plug-in type encapsulate maximum difference, be not rely on the part pin to insert hole-drilled circuit, support the weight of part or keep the direction of part, add that surface sticking assembly and printed circuit board (PCB) constitute the electrode position of connection in the one side identical with part, and be able to all load onto part on printed circuit board (PCB) same position two sides, therefore with the printed circuit board (PCB) of through hole technology by comparison, the part of the printed circuit board (PCB) of use surface mount encapsulation technology can be comparatively intensive, meaning promptly can make more function be placed on the printed circuit board (PCB) of same area, perhaps can keep same function with the littler printed circuit board (PCB) of area.
Also therefore; the fuse that is used in the apparatus overload current protection also possesses the surface mount pattern is arranged; as shown in Figure 1; be a kind of structure cutaway view of surface-adhered fuse of in the streets generally commonly seeing at present; this surface-adhered fuse mainly is provided with electrode part 12 at two corresponding positions with the similar insulating substrate 11 of printed circuit board (PCB) material (for example FR4) bottom surface; these two corresponding electrode part 12 extend to end face along the outer side surface of insulating substrate 11; and only connect by the melting chain part 13 that is mainly constituted together by the copper facing film; whole surface-adhered fuse further is provided with a tin layer 14 in the centre position of melting chain part 13; this tin layer 14 is different from the copper metal of melting chain part 13; mainly when tin layer 14 melts because of the overcurrent load; can allow melting chain part 13 become gun-metal; make melting chain part 13 have more independent tin or the lower fusing point of copper; the operative temperature of these melting chain part 13 devices is reduced, to improve the performance of whole fuse.In addition, but the end face of insulating substrate 11 is provided with a protective layer 15 that utilizes light statue material to be constituted, with protection melting chain part 13 and on 14 oxidation of tin layer, and produce and prevent the shield effectiveness that metal melting spills.
When using, whole surface-adhered fuse promptly utilizes melting chain part 13 to constitute the circuit turn-on of two electrode part 12, therefore the electric current that exceeds the quata is during by melting chain part, will make its produce high temperature or specified temp and causes fusing, to reach the exceed the quata circuit protection effect of electric current of blocking-up; Yet; with regard to reality; when producing thermal source when melting chain part 13 energising starts; this some thermal source can be because the contact action of this melting chain part 13 and this insulating substrate 11; and with the dissipation via insulating substrate 11 heat conduction of this part of heat energy, when making the excess electricity stream of this setting by melting chain part 13, this melting chain part 13 can't reach specific currents or specific high temperature and fuse; and then can't reach the blocking-up circuit protection effect of electric current that exceeds the quata, and make the electronic circuit of electric device impaired or burn.
The utility model content
Technical problem to be solved in the utility model is providing a kind of this surface bonding type film fuse of can possessing really to reach specific currents or specified temp and cause fusing, with the exceed the quata surface bonding type film fuse structure and the manufacture method thereof of circuit protection effect of electric current of blocking-up.
For reaching above-mentioned purpose, its technical scheme of surface bonding type film fuse structure of the present utility model is, at least the wherein one side at an insulating substrate is provided with the fuse line architecture, this fuse line architecture connects a melting chain part between two corresponding electrode part, with when the electric current that exceeds the quata passes through melting chain part, to make its generation high temperature or specified temp and cause fusing, to reach the circuit protection effect of blocking the electric current that exceeds the quata; Wherein, be provided with at least one space between this melting chain part and insulating substrate.
The beneficial effects of the utility model are: make the thermal source that this melting chain part energising back produced can the dissipation via insulating substrate heat conduction, the effect that fuses to guarantee to reach specific currents or specified temp, and then the effect of possessing circuit protection really.
Description of drawings
Fig. 1 is for practising the structural representation that surface-adhered fuse is arranged;
Fig. 2 is the structural representation of surface bonding type film fuse in the utility model;
Fig. 3 is the structural perspective of surface bonding type film fuse in the utility model;
Fig. 4 to Fig. 9 is the molding structure schematic diagram of surface bonding type film fuse in the utility model;
Figure 10 to 11 is another molding structure schematic diagram of surface bonding type film fuse in the utility model;
Figure 12 is another molding structure schematic diagram of step B in the utility model;
Figure 13 is the structural representation of surface bonding type film fuse that can bilateral use in the utility model;
Figure 14 is the structural representation of the surface bonding type film fuse that but side uses in the utility model;
Figure 15 is another structural representation of surface bonding type film fuse that can bilateral use among the present invention;
But Figure 16 is another structural representation of the surface bonding type film fuse of side use among the present invention.
[figure number explanation]
Electrode part 221 melting chain parts 222
Electroless copper plating layer 321 copper electroplating layer 322
Photoresistance 33 second walls 34
Embodiment
Characteristics of the present utility model can be consulted the detailed description of the graphic and embodiment of this case and obtained to be well understood to.
The utility model " surface bonding type film fuse structure "; wherein; this surface bonding type film fuse structure 2 as shown in Figures 2 and 3; at least the wherein one side at an insulating substrate 21 is provided with fuse line architecture 22; this fuse line architecture 22 connects a melting chain part 222 between two corresponding electrode part 221; the surperficial middle part of this melting chain part 222 is provided with tin layer 23; and melting chain part 222 places of this fuse line architecture are provided with in order to prevent melting chain part 222 and 23 oxidation of tin layer and to prevent the protective layer 24 that motlten metal spills; wherein; 21 of this melting chain part 222 and insulating substrates are provided with at least one space 25; make that this melting chain part 222 and insulating substrate 21 are non-directly to be contacted; make that the thermal source of melting chain part 222 can the dissipation via insulating substrate 21 heat conduction, reach the exceed the quata circuit protection effect of electric current of blocking-up to guarantee this melting chain part Yin Gaowen fusing.
As Fig. 4 to Fig. 9 is the molding structure schematic diagram of the utility model surface bonding type film fuse structure, and it includes the following step:
Steps A, provide an insulating substrate 21, as shown in Figure 4, this insulating substrate 21 can be epoxy resin fiberglass, Polyimide or substrates such as Polyimide glass fibre or pottery.
Step B, in this insulating substrate 21 at least one side be provided with wall 31, be provided with wall 31 in these insulating substrate 21 upper surfaces as shown in the figure, this wall 31 is arranged at the position that desire forms melting chain part.
Step C, copper layer 32 is set, be provided with wall 31 one sides in this insulating substrate 21, be coated with copper layer 32 comprehensively, as shown in Figure 5, and this step C further includes: step C1 and C2, this step C1 carries out the deposited copper processing procedure, be provided with wall 31 one sides in this insulating substrate 21 and be coated with electroless copper plating layer 321 comprehensively, and step C2 carries out the electro-coppering processing procedure, in these electroless copper plating layer 321 surface coverage copper electroplating layer 322 is arranged, to constitute copper layer 32 structure by this electroless copper plating layer 321 and copper electroplating layer 322.
Step D, on this copper layer 32 coating photoresistance 33, as shown in Figure 6, and expose, development, etching, make this copper layer form fuse line architecture 22, as shown in Figure 7, this fuse line architecture 22 includes two corresponding electrode part 221, and the melting chain part 222 that connects two electrode part 221.
Step e, removal wall 31, this wall 31 can be photoresist, this photoresistance can be dry film or wet film photoresistance, can utilize chemical solvent together to remove remaining photoresistance 33 and this wall 31 on the fuse line architecture 22, make 21 of this melting chain part 222 and insulating substrates be formed with at least one space 25, as shown in Figure 8.
Step F, tin layer 23 is set, as shown in Figure 9, is provided with tin layer 23 in the surperficial middle part of this melting chain part 222.
Step G, nickel dam 26, tin layer 27 are set, are provided with nickel dam 26, tin layer 27 in regular turn in the surface of this electrode part 221.
Step H, protective layer 24 is set, is provided with protective layer 24 in melting chain part 222 places of this fuse line architecture, and finishes this surface bonding type film fuse structure 2.
Moreover; in step F, can further be provided with second wall 34 again with tin layer 23 top in this melting chain part 222; as shown in figure 10; this second wall 34 can be lower than the hot melt material of tin layer 23 for fusing point; and carry out mode of heating after in these second wall, 34 tops protective layer 24 being set this second wall 34 is removed; make this protective layer 24 and this melting chain part 222 and 23 on this tin layer be formed with at least one space 25, as shown in figure 11.
In addition, another embodiment of the utility model intermediate interlayer, this wall can also be the water-fast material of washing, utilize high-pressure washing or chemical solvent cleaning way that this wall is removed and in step e, remove wall, utilize chemical solvent that remaining photoresistance on the fuse line architecture is removed again, carry out step F～H afterwards more in regular turn, can finish surface bonding type film fuse structure 2 as shown in Figure 9 equally.
Moreover, another embodiment of the utility model intermediate interlayer, this wall can be hot melt material, the fusing point of this wall is lower than the fusing point of tin layer, in step e, remove wall and utilize mode of heating that this wall is removed, utilize chemical solvent that remaining photoresistance on the fuse line architecture is removed again, and further include step F between this step D and the step e, and then carry out step G～H in regular turn after the step F, can finish surface bonding type film fuse structure 2 as shown in Figure 9 equally.
In addition, among another embodiment as shown in figure 12, this step B is respectively arranged with wall 31 in 21 two plate faces of this insulating substrate, and this wall 31 is as being photoresist, hot melt material or the water-fast material of washing in the various embodiments described above, and carry out step C～H in regular turn, then finish as shown in figure 13 can bilateral use surface bonding type film fuse structure 2, two plate faces of this insulating substrate 21 are respectively equipped with utilize melting chain part 222 to be connected between two corresponding electrode part 221 and the fuse line architecture 22 that constitutes; Certainly, wherein also can be formed with at least one space 25 in this step F, as shown in figure 15, and finish the surface bonding type film fuse structure 2 that another kind can bilateral use in this protective layer 24 and this melting chain part 222 and 23 on this tin layer.
Moreover, another embodiment as shown in figure 12, carry out in regular turn more more including step I behind step C～H, this step I is for being provided with conductive part, as shown in figure 14, these insulating substrate 21 dual-sides are provided with the conductive part 223 that two corresponding electrode part 221 of plate face are connected, then carry out step G and step H after the step I in regular turn, but then finish the surface bonding type film fuse structure 2 of side use as shown in figure 14, wherein, this step G is for being provided with nickel dam, the tin layer is provided with nickel dam 26 in regular turn in the surface of this electrode part 221 and conductive part 223, tin layer 27, step H are then for being provided with protective layer 24; Certainly, wherein also can be formed with at least one space 25 in this step F, as shown in figure 16, but and finish the surface bonding type film fuse structure 2 that the another kind side uses in this protective layer 24 and this melting chain part 222 and 23 on this tin layer.
What deserves to be mentioned is; the utility model can be improved and practise in the surface bonding type film fuse structure that has; the contact action of this melting chain part and this insulating substrate; the part of heat energy that makes melting chain part energising start and produce; meeting dissipation via this insulating substrate heat conduction; make this melting chain part can't reach specific high temperature and fuse; and then can't reach the circuit protection effect of blocking the electric current that exceeds the quata; and the electronic circuit that makes electric device is impaired or disappearance such as burn; and the utility model is by contactless setting between melting chain part and this insulating substrate; allow the thermal source that this melting chain part energising back produced can dissipation via insulating substrate heat conduction; with the effect of guaranteeing to reach specific currents or specified temp and fusing, and then the effect of possessing circuit protection really.
Technology contents of the present utility model and technical characterstic disclose as above, yet the personage who is familiar with this technology still may do various replacement and the modifications that do not deviate from this case utility model spirit based on announcement of the present utility model.Therefore, protection range of the present utility model should be not limited to those disclosed embodiments, and should comprise various do not deviate from replacement of the present utility model and modifications, and is contained by following claim.
Claims (7)
1, a kind of surface bonding type film fuse structure, the wherein one side at an insulating substrate is provided with the fuse line architecture at least, and this fuse line architecture connects a melting chain part between two corresponding electrode part; It is characterized in that:
Be provided with at least one space between this melting chain part and insulating substrate.
2, surface bonding type film fuse structure according to claim 1 is characterized in that, two plate faces of this insulating substrate are respectively equipped with and utilize melting chain part to be connected between two corresponding electrode part and the fuse line architecture that constitutes.
3, as surface bonding type film fuse structure as described in the claim 2, it is characterized in that this insulating substrate dual-side further is provided with the conductive part that two corresponding electrode part of plate face are connected.
4, as surface bonding type film fuse structure as described in the claim 3, it is characterized in that this electrode part and conductive part surface are formed with nickel dam and tin layer.
5, surface bonding type film fuse structure as claimed in claim 1 or 2 is characterized in that the surperficial middle part of this melting chain part is provided with the tin layer.
6, as surface bonding type film fuse structure as described in the claim 1,2 or 3, it is characterized in that respectively the melting chain part place of this fuse line architecture is provided with in order to prevent the melting chain part oxidation and to prevent the protective layer that motlten metal spills.
7, as surface bonding type film fuse structure as described in the claim 1,2 or 3, it is characterized in that this protective layer and this melting chain part and this tin interlayer are formed with at least one space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203108600U CN201130650Y (en) | 2007-12-28 | 2007-12-28 | Surface-contact type thin film safety wire structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203108600U CN201130650Y (en) | 2007-12-28 | 2007-12-28 | Surface-contact type thin film safety wire structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201130650Y true CN201130650Y (en) | 2008-10-08 |
Family
ID=40018514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203108600U Expired - Lifetime CN201130650Y (en) | 2007-12-28 | 2007-12-28 | Surface-contact type thin film safety wire structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201130650Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471208B (en) * | 2007-12-28 | 2011-07-20 | 颜琼章 | Manufacturing method of surface bonding type film fuse |
-
2007
- 2007-12-28 CN CNU2007203108600U patent/CN201130650Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471208B (en) * | 2007-12-28 | 2011-07-20 | 颜琼章 | Manufacturing method of surface bonding type film fuse |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160830 Address after: 529100 Guangdong Province, Jiangmen City Xinhui District new wealth green electroplating base second 202 third, fourth Patentee after: Jiangmen City Jun Wei Electronic Technology Co., Ltd. Address before: Hsinchu City, Taiwan Chinese Niu Po Road 247 Lane 8 Patentee before: Yan Qiongzhang |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081008 |
|
| CX01 | Expiry of patent term |