CN213583773U - Bridge rectifier that lightning stroke prevention - Google Patents
Bridge rectifier that lightning stroke prevention Download PDFInfo
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- CN213583773U CN213583773U CN202023093607.9U CN202023093607U CN213583773U CN 213583773 U CN213583773 U CN 213583773U CN 202023093607 U CN202023093607 U CN 202023093607U CN 213583773 U CN213583773 U CN 213583773U
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Abstract
The utility model discloses a bridge rectifier that lightning protection was hit relates to electronic component technical field, including the rectification chip, the plastic-sealed body of encapsulation rectification chip is equipped with the lead frame in the plastic-sealed body, and the one end of lead frame is connected with the pin, is connected with the soldering lug on the lead frame, and the rectification chip is including mixing dense boron diffusion layer P +, base region N-, mix dense phosphorus diffusion layer N +, mix dense boron diffusion layer P +, base region N-, mix dense phosphorus diffusion layer N + and set gradually, and the thickness of rectification chip is 250 mu m, and wherein the thickness of base region N-is 50 mu m. The utility model discloses a reduce the thickness of base region N- ' for rectifier chip's whole thickness reduces, and rectifier chip's resistance reduces, and the electric current trafficability characteristic is stronger, and the peak current that the diode can bear is bigger, thereby the diode has stronger anti-surge ability and lightning protection ability of hitting.
Description
Technical Field
The utility model relates to an electronic component technical field specifically is a bridge rectifier that lightning protection was hit.
Background
The bridge rectifier is formed by bridge connection of four rectifier silicon rectifier chips and external insulation plastic packaging, and a zinc metal shell is added outside an insulation layer to encapsulate the high-power bridge rectifier, so that heat dissipation is enhanced.
The existing bridge rectifier has small forward surge peak current and weak over-voltage and over-current resistance, so that the lightning and surge protection capability is low, the work is unstable, the reliability is low, and the service life is short.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bridge rectifier of lightning protection has stronger anti-surge ability and lightning protection ability, job stabilization, reliability height, long service life's beneficial effect to solve the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a bridge rectifier for preventing lightning stroke comprises a rectifying chip, a plastic package body for packaging the rectifying chip, a lead frame arranged in the plastic package body, wherein the lead frame comprises a first lead frame, a second lead frame, a third lead frame and a fourth lead frame, the first lead frame, the second lead frame, the third lead frame and the fourth lead frame are sequentially arranged, one end of the first lead frame, one end of the second lead frame, one end of the third lead frame and one end of the fourth lead frame are respectively connected with a pin, one end of each pin extends out of the plastic package body, welding pieces are sequentially connected onto the first lead frame, the second lead frame, the third lead frame and the fourth lead frame, the welding pieces are packaged in the plastic package body and are connected with the rectifying chip, the rectifying chip comprises a concentrated boron doped diffusion layer P +, a base region N-, a concentrated phosphorus doped diffusion layer N +, a concentrated boron doped diffusion layer P +, the doped phosphorus diffusion layers N + are sequentially arranged, the thickness of the rectifying chip is 250 micrometers, and the thickness of the base region N-is 50 micrometers.
As a further aspect of the present invention: one end of the soldering lug is welded with the lead frame through solder, the other end of the soldering lug is welded with the rectifier chip through solder, the lead frame is welded with the pin through solder, and the lead frame, the pin and the solder are connected into a whole.
As a further aspect of the present invention: the quantity of the lead frame, the pins and the soldering lug corresponds to that of the lead frame, and the quantity of the lead frame, the pins and the soldering lug is four, and the lead frame, the pins and the soldering lug are all made of copper.
As a further aspect of the present invention: the solder is lead, tin or silver.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a reduce the thickness of base region N- ' for rectifier chip's whole thickness reduces, and rectifier chip's resistance reduces, and the electric current trafficability characteristic is stronger, and the peak current that the diode can bear is bigger, thereby the diode has stronger anti-surge ability and lightning protection ability, the utility model discloses job stabilization, the reliability is high, long service life.
Drawings
Fig. 1 is a schematic structural diagram of the bridge rectifier of the present invention.
Fig. 2 is a schematic diagram of an internal structure of a rectifier chip in the bridge rectifier of the present invention.
The labels in the figure are:
10. a rectifying chip; 11. molding the body; 12. a first lead frame; 13. a second lead frame; 14. a third lead frame; 15. a fourth lead frame; 16. a pin; 17. and (7) soldering lugs.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, a bridge rectifier for preventing lightning stroke includes a rectifier chip 10, a plastic package body 11 for packaging the rectifier chip 10, a lead frame is disposed in the plastic package body 11, the lead frame includes a first lead frame 12, a second lead frame 13, a third lead frame 14 and a fourth lead frame 15, the first lead frame 12, the second lead frame 13, the third lead frame 14 and the fourth lead frame 15 are sequentially disposed, one end of each of the first lead frame 12, the second lead frame 13, the third lead frame 14 and the fourth lead frame 15 is connected to a pin 16, one end of the pin 16 extends out of the plastic package body 11, the first lead frame 12, the second lead frame 13, the third lead frame 14 and the fourth lead frame 15 are sequentially connected to a soldering lug 17, the soldering lug 17 is packaged in the plastic package body 11 and connected to the rectifier chip 10, referring to fig. 2, the rectifying chip 10 comprises a concentrated boron-doped diffusion layer P +, a base region N-, a concentrated phosphorus-doped diffusion layer N +, a concentrated boron-doped diffusion layer P +, a base region N-, and a concentrated phosphorus-doped diffusion layer N + which are sequentially arranged, the thickness of the rectifying chip 10 is 250 micrometers, and the thickness of the base region N-is 50 micrometers. The utility model discloses a reduce the thickness of base region N- ' for rectifier chip 10's whole thickness reduces, and rectifier chip 10's resistance reduces, and the electric current trafficability characteristic is stronger, and the peak current that the diode can bear is bigger, thereby the diode has stronger anti-surge ability and lightning protection ability of hitting, the utility model discloses job stabilization, the reliability is high, long service life.
The utility model discloses in the embodiment of a preferred, soldering lug 17 one end is passed through solder and lead frame welding, and the other end passes through solder and rectifier chip 10 welding, and the lead frame passes through solder welding with pin 16, and lead frame, pin 16, solder are even as an organic whole, and furtherly, the solder is plumbous, tin or silver.
The utility model discloses in the embodiment of a preferred, the quantity of lead frame, pin 16, soldering lug 17 is corresponding with the lead frame, is four, and the material of lead frame, pin 16, soldering lug 17 is the copper that electric conductivity is good.
The utility model discloses a reduce the thickness of base region N- ' for rectifier chip 10's whole thickness reduces, and rectifier chip 10's resistance reduces, and the electric current trafficability characteristic is stronger, and the peak current that the diode can bear is bigger, thereby the diode has stronger anti-surge ability and lightning protection ability of hitting, the utility model discloses job stabilization, the reliability is high, long service life.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides a bridge rectifier who strikes protection, a serial communication port, including the rectification chip, the encapsulation the plastic-sealed body of rectification chip, the internal lead frame that is equipped with of plastic-sealed, the lead frame includes first lead frame, second lead frame, third lead frame and fourth lead frame, first lead frame, second lead frame, third lead frame and fourth lead frame set gradually, the one end of first lead frame, second lead frame, third lead frame and fourth lead frame all is connected with the pin, pin one end stretch out in the plastic-sealed body, the soldering lug has connected gradually on first lead frame, second lead frame, third lead frame and the fourth lead frame, the soldering lug encapsulate in the plastic-sealed body to be connected with the rectification chip, the rectification chip is including doping concentrated boron diffusion layer P +, base region N-), The rectifying chip is characterized in that the rectifying chip is provided with a concentrated phosphorus-doped diffusion layer N +, a base region N-and a concentrated boron-doped diffusion layer N +, the thickness of the concentrated boron-doped diffusion layer P +, the thickness of the base region N-and the thickness of the concentrated phosphorus-doped diffusion layer N + are sequentially arranged, the thickness of the rectifying chip is 250 micrometers, and the thickness of the base region N-is 50 micrometers.
2. The bridge rectifier of claim 1, wherein one end of the soldering lug is soldered to a lead frame by solder, the other end of the soldering lug is soldered to the rectifying chip by solder, the lead frame and the lead are soldered by solder, and the lead frame, the lead and the solder are connected into a whole.
3. The bridge rectifier of claim 1, wherein the number of the lead frame, the number of the pins and the number of the soldering lugs are four, and the lead frame, the number of the pins and the number of the soldering lugs are all copper.
4. A lightning protection bridge rectifier according to claim 2 in which the solder is lead, tin or silver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023093607.9U CN213583773U (en) | 2020-12-21 | 2020-12-21 | Bridge rectifier that lightning stroke prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023093607.9U CN213583773U (en) | 2020-12-21 | 2020-12-21 | Bridge rectifier that lightning stroke prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213583773U true CN213583773U (en) | 2021-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023093607.9U Active CN213583773U (en) | 2020-12-21 | 2020-12-21 | Bridge rectifier that lightning stroke prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213583773U (en) |
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2020
- 2020-12-21 CN CN202023093607.9U patent/CN213583773U/en active Active
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