CN205846717U - Two-way surge absorbing device - Google Patents
Two-way surge absorbing device Download PDFInfo
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- CN205846717U CN205846717U CN201620743663.7U CN201620743663U CN205846717U CN 205846717 U CN205846717 U CN 205846717U CN 201620743663 U CN201620743663 U CN 201620743663U CN 205846717 U CN205846717 U CN 205846717U
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Abstract
The utility model discloses a kind of two-way surge absorbing device, including multiple diodes, diode is divided into two groups, and two groups of diodes are parallel with one another, and respectively constitutes the first branch road and second branch road of parallel circuit, and the conducting direction of the first branch road and the second branch road is contrary；The two poles of the earth of above-mentioned two parallel branch constitute the two poles of the earth of two-way surge absorbing device.This utility model provides the device of a kind of special diode type; for absorbing surge filtering; there is the response time (subnanosecond level) and at a relatively high surge absoption ability being exceedingly fast; when the high energy impact events of moment is stood at its two ends; this utility model can be become Low ESR the resistance value of go-and-retum from high impedance with high speed; to absorb an instantaneous large-current; thus both end voltage strangulation one predetermined numerically, thus protection component below is not impacted by high voltage transient spike.
Description
Technical field
This utility model relates to a kind of two-way surge absorbing device, belongs to diode technologies field.
Background technology
At present, in electronic applications, the current impulse caused because of electronics clutter or switch, is the greastest element of components and parts destruction
Fierce.Therefore, in circuit design, general meeting specialized designs is exclusive, various filter circuits, to ensure that components and parts are just
Often run.This time exploitation, is that special exploitation is a kind of special, it is possible to for the diode of surge filtering.And in initial design
On, farthest simplify its production procedure and critical technological point.
Summary of the invention
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, it is provided that a kind of two-way surge is inhaled
Receive device, to solve to absorb the technical problem of surge filtering.
In order to solve above-mentioned technical problem, the technical solution of the utility model is: a kind of two-way surge absorbing device, including
Multiple diodes, diode is divided into two groups, and two groups of diodes are parallel with one another, and respectively constitutes first branch road and of parallel circuit
Two branch roads, the conducting direction of the first branch road and the second branch road is contrary；The two poles of the earth of above-mentioned two parallel branch constitute two-way surge
Absorb the two poles of the earth of device.
Further, described diode is provided with two, and two diode is parallel with one another and conducting direction is contrary.
Further, described diode is provided with eight, and every four is one group, the conducting direction of the diode in each branch road
Identical, the conducting direction of two branch roads parallel with one another is contrary.
After have employed technique scheme, this utility model provides the device of a kind of special diode type, is used for
Absorption surge filters, and has the response time (subnanosecond level) and at a relatively high surge absoption ability being exceedingly fast, when its two ends warp
During by the high energy impact events of moment, this utility model can be become low-resistance the resistance value of go-and-retum from high impedance with high speed
Anti-, to absorb an instantaneous large-current, thus both end voltage strangulation one predetermined numerically, thus the electricity that protection is below
Circuit component is not impacted by high voltage transient spike；This utility model can be used for the protection of low voltage semiconductor device, circuit is exempted from
Disturbing of the transient voltage produced during by electrostatic, inductive load switching, and the interference of overvoltage produced by induced lightening；This
Utility model can be used in various diode outline packages, and pickling-free, unprotect glue, production technology extremely simplifies.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of embodiment one of the present utility model；
Fig. 2 is the circuit theory diagrams of embodiment two of the present utility model；
Fig. 3 is the VA characteristic curve of embodiment one；
Fig. 4 is the electric current when bearing heavy current impact observed on dual trace oscilloscope of embodiment one and voltage waveform
Figure.
Detailed description of the invention
In order to make content of the present utility model be easier to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail this utility model.
Embodiment one:
As it is shown in figure 1, a kind of two-way surge absorbing device, it is characterised in that: including multiple diode, diode is divided into two
Group, two groups of diodes are parallel with one another, and respectively constitute the first branch road and second branch road of parallel circuit, the first branch road and second
The conducting direction on road is contrary；The two poles of the earth of above-mentioned two parallel branch constitute the two poles of the earth of two-way surge absorbing device.
Specifically, as it is shown in figure 1, described diode is provided with two, two diodes are parallel with one another and conducting direction phase
Instead.
Embodiment two:
As in figure 2 it is shown, a kind of two-way surge absorbing device, including multiple diodes, diode is divided into two groups, two group of two pole
Manage parallel with one another, and respectively constitute the first branch road and second branch road of parallel circuit, the first branch road and the conducting side of the second branch road
To on the contrary；The two poles of the earth of above-mentioned two parallel branch constitute the two poles of the earth of two-way surge absorbing device.
Specifically, as in figure 2 it is shown, described diode is provided with eight, every four is one group, the diode in each branch road
Conducting direction identical, the conducting direction of two branch roads parallel with one another is contrary.
With embodiment one operation principle of the present utility model is described below:
As it is shown on figure 3, this utility model is the element of a kind of two-way simultaneous protection, wherein VRIt is referred to as maximum break over voltage,
It is the critical voltage before reverse breakdown, VBIt is breakdown voltage, the reverse current I of its correspondenceTGeneral value is 1 mA.VCIt is
Maximum clamp voltage, when the peak point current flow through in two-way surge absorbing device pipe is IPPBig electric current time, pipe both end voltage
The most no longer rise；The most two-way surge absorbing device can be limited in the port voltage of protected device or equipment all the time
VB～VCEffective district in.Unlike stabilivolt, IPPNumerical value up to hundreds of amperes, and clamp response time and be only 1
×10-12s.The maximum allowable pulse power of two-way surge absorbing device pipe is PM=VCIPP, and under given maximum clamp voltage,
Power consumption PMThe biggest, the ability to bear of its surge current is the biggest.
As shown in Figure 4, in figure, curve 1 is the current waveform of two-way surge absorbing device, it will thus be seen that its electricity flow through
After stream is sharp risen to peak value by 1mA, the most exponentially decline；Curve 2 is the voltage at two-way surge absorbing device two ends
Waveform, it represents that when the electric current in pipe flies up, its both end voltage rises the most therewith.Under the effect of surge voltage, two-way
The voltage of surge absorbing device two interpolar is risen to breakdown voltage V by specified reverse shutoff voltageBAnd it is breakdown.Along with breakdown potential
The appearance of stream, the electric current flowing through two-way surge absorbing device is up to peak pulse current IPP, the voltage at its two ends is by pincers simultaneously
Position clamps voltage V to predetermined maximumCBelow.Thereafter, along with pulse current is by exponential damping, during being somebody's turn to do, two-way surge is inhaled
The voltage receiving device two interpolar the most constantly declines, and finally returns to initial state, here it is the suppression of two-way surge absorbing device may go out
Existing surge pulse power, the process of protection electronic devices and components.
It is true that when two-way surge absorbing device the two poles of the earth are by reverse high energy impact events, it can be with 10-12The speed of s level
Degree, by the impedance of its two interpolar by high step-down, to absorb the surge power of up to thousands of watts, makes the voltage clamp of two interpolars be positioned at pre-
Definite value, thus effectively protect the components and parts in electronic equipment from the infringement of ESD.
This utility model provides the device of a kind of special diode type, is used for absorbing surge filtering, has and be exceedingly fast
Response time (subnanosecond level) and at a relatively high surge absoption ability, when the high energy impact events of moment is stood at its two ends,
This utility model can be become Low ESR the resistance value of go-and-retum from high impedance with high speed, to absorb a moment big electricity
Stream, thus both end voltage strangulation one predetermined numerically, thus protection component below is by high voltage transient point
The impact of peak pulse；This utility model can be used for the protection of low voltage semiconductor device, circuit from electrostatic, inductive load switching
Time the interference of transient voltage that produces, and the interference of overvoltage produced by induced lightening；This utility model can be used in various
Diode outline packages, pickling-free, unprotect glue, production technology extremely simplifies.
Particular embodiments described above, solves the technical problem that this utility model, technical scheme and beneficial effect enter
Go further description, it should be understood that and the foregoing is only specific embodiment of the utility model, and need not
In limiting this utility model, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement done
Deng, within should be included in protection domain of the present utility model.
Claims (3)
1. a two-way surge absorbing device, it is characterised in that: including multiple diode, diode is divided into two groups, two group of two pole
Manage parallel with one another, and respectively constitute the first branch road and second branch road of parallel circuit, the first branch road and the conducting side of the second branch road
To on the contrary；The two poles of the earth of above-mentioned two parallel branch constitute the two poles of the earth of two-way surge absorbing device.
Two-way surge absorbing device the most according to claim 1, it is characterised in that: described diode is provided with two, and two
Individual diode is parallel with one another and conducting direction is contrary.
Two-way surge absorbing device the most according to claim 1, it is characterised in that: described diode is provided with eight, often
Four is one group, and the conducting direction of the diode in each branch road is identical, and the conducting direction of two branch roads parallel with one another is contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620743663.7U CN205846717U (en) | 2016-07-15 | 2016-07-15 | Two-way surge absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620743663.7U CN205846717U (en) | 2016-07-15 | 2016-07-15 | Two-way surge absorbing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205846717U true CN205846717U (en) | 2016-12-28 |
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ID=57618977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620743663.7U Active CN205846717U (en) | 2016-07-15 | 2016-07-15 | Two-way surge absorbing device |
Country Status (1)
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| CN (1) | CN205846717U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147097A (en) * | 2017-06-22 | 2017-09-08 | 武汉元丰汽车电控系统有限公司 | A kind of protection circuit |
| CN110783328A (en) * | 2018-07-31 | 2020-02-11 | 立积电子股份有限公司 | Anti-parallel diode device |
-
2016
- 2016-07-15 CN CN201620743663.7U patent/CN205846717U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147097A (en) * | 2017-06-22 | 2017-09-08 | 武汉元丰汽车电控系统有限公司 | A kind of protection circuit |
| CN110783328A (en) * | 2018-07-31 | 2020-02-11 | 立积电子股份有限公司 | Anti-parallel diode device |
| CN110783328B (en) * | 2018-07-31 | 2022-09-06 | 立积电子股份有限公司 | Anti-parallel diode device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |