CN203277099U - Improved capacitor and a mainboard using same - Google Patents
Improved capacitor and a mainboard using same Download PDFInfo
- Publication number
- CN203277099U CN203277099U CN 201320145089 CN201320145089U CN203277099U CN 203277099 U CN203277099 U CN 203277099U CN 201320145089 CN201320145089 CN 201320145089 CN 201320145089 U CN201320145089 U CN 201320145089U CN 203277099 U CN203277099 U CN 203277099U
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- electric capacity
- mainboard
- pin
- pole pin
- negative pole
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Abstract
The utility model provides an improved capacitor which comprises a capacitor body, a positive pole pin, and a negative pole pin. The positive pole pin and the negative pole pin are plate-shaped; one end of the positive/negative pole pin is arranged at a short edge sidewall of the capacitor body; and one end of the negative/positive pole pin is connected with a center at a bottom of the capacitor body and extends to the center of a long edge sidewall. A hole site is arranged on the mainboard for accommodating the capacitor body; the capacitor is arranged inside the hole site; protruding ends of the positive pole pin and the negative pole pin are respectively connected with the mainboard by welding; such PCs as the computer, notebook, AIO (all-in-one) machine, desktop computer are enabled to be light and thin and the ESL of the capacitor is reduced; and the system is more stable.
Description
Technical field
The utility model belongs to electric capacity, is specifically related to a kind of mainboard PC that can make more frivolous and reduce the improved electric capacity of electric capacity ESL and use the mainboard of this electric capacity.
Background technology
Computer, notebook, all-in-one AIO, the mainboard PC such as desktop computer are toward the development of frivolous direction, the limit for height of mainboard front or reverse side is generally lower, require the element heights on mainboard more and more lower, the height of electric capacity, the electric capacity of especially high withstand voltage high power capacity, have no idea to be placed on mainboard, this becomes the bottleneck of current techniques development.
Now polymer aluminium or the tantalum electric capacity of jumbo high withstand voltage are generally highly higher, and the stray inductance parameter of electric capacity itself is very large, at some, there is problem in stray inductance very sensitive place very much.Usually stray inductance is distributed between wire, between coil and casing and the distributed capacitance between some element etc., though their numerical value is little, but is the major reason that causes interference.Not only changed the capacitance of capacitance sensor, and because transducer self capacity amount is very little, parasitic capacitance is extremely unstable, this also causes sensor characteristics unstable, and transducer is produced severe jamming.Parasitic implication is exactly original not in that local design capacitance, but owing between the wiring structure, mutual appearance always being arranged, mutual inductance just look like be colonize between wiring equally, so be " parasitic capacitance ".
" parasitic capacitance " generally refers to inductance, resistance, the capacitance characteristic that chip pin etc. show under high frequency situations.In fact, an equivalent resistance is in an electric capacity, an inductance, and the series winding of a resistance, and performance is not clearly in the low frequency situation, and under high frequency situations, equivalence value can increase, and can not ignore.We will take into account in calculating.ESL is exactly equivalent inductance, and ESR is exactly equivalent resistance.No matter be resistance, electric capacity, inductance, or diode, triode, metal-oxide-semiconductor also has IC, in the situation that high frequency we all to consider their equivalent capacitance value, equivalent inductance ESL.
Equivalent inductance ESL=k*L*W, wherein, L: the both positive and negative polarity spacing, W: the two poles of the earth metal part wide in the situation that keep W constant, if reduce the value of L, namely can reach the effect of low ESL.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of electric capacity, changes the anodal pin of electric capacity, shape and the position of negative pole pin, reduces the both positive and negative polarity spacing, thereby reduces equivalent inductance ESL, the technical development of current frivolous PC preferably.
Another technical problem to be solved in the utility model is to provide a kind of mainboard, and the position, hole with above-mentioned electric capacity coupling is set on mainboard, makes computer, notebook, all-in-one AIO, and the PC such as desktop computer are more frivolous and reduce the ESL of electric capacity, make system more stable.
For achieving the above object, the utility model by the following technical solutions:
A kind of improved electric capacity, comprise electric capacity main body and anodal pin, negative pole pin, described anodal pin, negative pole pin are tabular, just described/negative pole pin one end is arranged on the minor face sidewall of electric capacity main body, described bearing/anodal pin one end connects the centre of electric capacity bottom part body and extends to the long side wall, can reduce like this electric capacity inner track and then reduce stray inductance.
Preferably, just described/negative pole pin one end is arranged in the middle of the minor face sidewall of electric capacity main body, stretches out downwards from electric capacity main body bottom surface that the other end stretches out after the sidewall bending; Described bearing/anodal pin one end connects the middle of electric capacity bottom part body and extends to the long side wall, stretches out along the rear other end of sidewall bending downwards.
Preferably, equal stretch out vertical with sidewall of the described other end.
Preferably, described electric capacity is patch-type polymer electric capacity.
A kind of mainboard is provided for the position, hole of accommodating electric capacity main body on described mainboard, above-mentioned electric capacity is arranged in position, described hole, and the anodal pin of described electric capacity, the external part of negative pole pin weld with mainboard respectively.
The utility model compared with prior art has the following advantages:
1) the anodal pin of traditional polymer electric capacity, negative pole pin (pad) are located at the two ends, bottom of electric capacity, so they can only be placed on the top of mainboard or below, the utility model changes the Pin locations of electric capacity, reduced the both positive and negative polarity spacing, and the position, hole is set on the PCB mainboard, the electric capacity main body by the pin external part can frame on mainboard, weld with mainboard, thickness and the up and down limit for height that can take full advantage of like this PCB are put highly very high electric capacity, solve the demand of frivolous notebook; The height that can also take full advantage of mainboard thickness and up and down is done the capacitance that height increases high withstand voltage to polymer aluminium or tantalum electric capacity.
2) the utility model will change the Pin locations of electric capacity, reduce the inner both positive and negative polarity spacing of electric capacity L, in the situation that keep the wide W of the two poles of the earth metal part constant, reduce the value of L, reach the effect of low ESL, increase Systems balanth.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the upward view of Fig. 1;
Fig. 4 is the ESL of the utility model (b) and the principle contrast schematic diagram of prior art (a) minimizing;
Fig. 5 is the structural representation that the utility model coordinates with mainboard;
Fig. 6 is the right view of Fig. 5;
Fig. 7 is the upward view of Fig. 5.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1, 2, 3, the electric capacity of the present embodiment comprises electric capacity main body 1, anodal pin 2 and negative pole pin 3, described anodal pin 2 and negative pole pin 3 are flat board, described anodal pin 2 one ends are arranged in the middle of the sidewall of electric capacity main body 1, described negative pole pin 3 one ends connect the centre of electric capacity main body 1 bottom and extend to long side wall middle, the other end is pulled out from the side, is the wing shape.As shown in Figure 4, because the negative pole of drawing in the middle of this will reduce half (dotted line is current path) to the distance of positive pole than the distance in original polymer electric capacity both positive and negative polarity space, in the situation that keep the wide W of positive and negative polarities metal part constant, reduce the value of both positive and negative polarity spacing L, reduce the electric capacity inner track, then reach the effect that reduces stray inductance ESL, increase Systems balanth.
During use, as shown in Fig. 5,6,7, be provided for the position, hole 5 of accommodating electric capacity main body 1 on mainboard 4, with above-mentioned electric capacity main body 1 be arranged in position, described hole 5, the anodal pin 2 of described electric capacity and the external part of negative pole pin 3 respectively with mainboard 4 welding.The utility model is highly suitable for some and must uses the high withstand voltage of high power capacity simultaneously the ESL size to be had the electric capacity of specific (special) requirements, but mainboard has again the occasion of limitation in height, solves the defective that prior art exists, and satisfies designer's application demand.
The present embodiment and embodiment difference be, described negative pole pin one end is arranged in the middle of the sidewall of electric capacity main body, and described anodal pin one end connects the centre of electric capacity main body 1 bottom and extends to long side wall middle, and the other end is pulled out from the side, is the wing shape.
The utility model above-described embodiment is only this patent execution mode preferably, and the structure that all employing the technical program are described, feature and the variation on its spiritual principle, modification all belong to the protection range of this patent.
Claims (5)
1. improved electric capacity, comprise electric capacity main body and anodal pin, negative pole pin, it is characterized in that, described anodal pin, negative pole pin are tabular, just described/negative pole pin one end is arranged on the minor face sidewall of electric capacity main body, and described bearing/anodal pin one end connects the centre of electric capacity bottom part body and extends to the long side wall.
2. electric capacity according to claim 1, it is characterized in that: just described/negative pole pin one end is arranged in the middle of the minor face sidewall of electric capacity main body, stretches out downwards from electric capacity main body bottom surface that the other end stretches out after the sidewall bending; Described bearing/anodal pin one end connects the middle of electric capacity bottom part body and extends to the long side wall, stretches out along the rear other end of sidewall bending downwards.
3. electric capacity according to claim 2, it is characterized in that: the described other end is stretch out vertical with sidewall all.
4. electric capacity according to claim 1, it is characterized in that: described electric capacity is patch-type polymer electric capacity.
5. mainboard, it is characterized in that: be provided for the position, hole of accommodating electric capacity main body on described mainboard, the described electric capacity of above-mentioned arbitrary claim is arranged in position, described hole, and the anodal pin of described electric capacity, the external part of negative pole pin weld with mainboard respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320145089 CN203277099U (en) | 2013-03-27 | 2013-03-27 | Improved capacitor and a mainboard using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320145089 CN203277099U (en) | 2013-03-27 | 2013-03-27 | Improved capacitor and a mainboard using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203277099U true CN203277099U (en) | 2013-11-06 |
Family
ID=49507456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320145089 Expired - Lifetime CN203277099U (en) | 2013-03-27 | 2013-03-27 | Improved capacitor and a mainboard using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203277099U (en) |
-
2013
- 2013-03-27 CN CN 201320145089 patent/CN203277099U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |