CN108987363A - A kind of Metal Packaging rectifier diode and its manufacturing method - Google Patents

A kind of Metal Packaging rectifier diode and its manufacturing method Download PDF

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Publication number
CN108987363A
CN108987363A CN201810737044.0A CN201810737044A CN108987363A CN 108987363 A CN108987363 A CN 108987363A CN 201810737044 A CN201810737044 A CN 201810737044A CN 108987363 A CN108987363 A CN 108987363A
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Prior art keywords
stem
pipe cap
die assemblies
tube socket
rectifier diode
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CN201810737044.0A
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CN108987363B (en
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吕晋萍
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XI'AN WEIGUANG TECHNOLOGY Co Ltd
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XI'AN WEIGUANG TECHNOLOGY Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/48Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/48Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
    • H01L21/4814Conductive parts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/48Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
    • H01L21/4814Conductive parts
    • H01L21/4817Conductive parts for containers, e.g. caps
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/50Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/16Fillings or auxiliary members in containers or encapsulations, e.g. centering rings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/34Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/367Cooling facilitated by shape of device
    • H01L23/3677Wire-like or pin-like cooling fins or heat sinks
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/86Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
    • H01L29/861Diodes

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Rectifiers (AREA)

Abstract

A kind of Metal Packaging rectifier diode of the present invention and its manufacturing method, diode include tube socket, die assemblies, stem and pipe cap;Tube socket and pipe cap are respectively formed the first and second electrode;Die assemblies are welded on tube socket, and one end of stem is welded on die assemblies, and the other end is fixedly connected with pipe cap;Stem is arranged across pipe cap, and pipe cap is tightly connected with tube socket and stem respectively;Stem is knitted to form by multiply metal wire, and both ends are provided with the metallic sheath for fastening metal line.Manufacturing method includes obtaining powering on pole piece and lower electrode slice, and die assemblies and sintering soldering and sealing are made in sintering.It can satisfy the use demand greater than 5A electric current, heat-sinking capability is strong, simple in sturcture, ingenious in design;It ensure that quality of connection and on state characteristic.This method ensure that the sintering quality and its reliability of die assemblies, it is ensured that the good viscous profit of part and solder is realized die assemblies and naked copper tube socket, stem, the stabilization of red copper ring, reliable, quick direct sintering.

Description

A kind of Metal Packaging rectifier diode and its manufacturing method
Technical field
The present invention relates to semiconductor components and devices preparation technical field, specially a kind of Metal Packaging rectifier diode and its system Make method.
Background technique
Rectifier diode is a kind of for alternating current to be changed into the semiconductor devices of direct current, and application field is extensive. One of Common Parameters maximum average rectified current IF important as its are able to reflect the working performance of rectifier diode, definition For allow when diode long-term work by maximum forward average current, which is determined by the junction area and radiating condition of PN junction It is fixed.Should be noted that when use cannot be greater than this value by the average current of diode, and meet radiating condition.Such as 1N4000 system The IF of column diode is 1A, is plastic device, product quality grade is low, reliability is low.In the prior art due to rectifying two poles The limitation of the structure and manufacture craft of pipe, IF value is in 5A hereinafter, 5A will be reached by being unable to satisfy the IF under some application conditions Above demand.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides that a kind of maximum average rectified current is big, and heat-sinking capability is strong, It is structurally reasonable, the Metal Packaging rectifier diode and its manufacturing method of simple process.
The present invention is to be achieved through the following technical solutions:
A kind of Metal Packaging rectifier diode, including tube socket, die assemblies, stem and pipe cap;Tube socket and pipe cap difference Form the first and second electrode;
The die assemblies are welded on tube socket, and one end of stem is welded on die assemblies, and the other end is fixedly connected Pipe cap;Stem is arranged across pipe cap, and pipe cap is tightly connected with tube socket and stem respectively;
The stem is knitted to form by multiply metal wire, and both ends are provided with the metallic sheath for fastening metal line.
Preferably, the stem and one end outer cover of die assemblies welding are equipped with positioning ring, positioning ring and lead Column and die assemblies are welded as a whole.
Preferably, the part for stem being tightly connected on the pipe cap is provided with ceramic insulator, pipe cap and tube socket it Between connected by soldering and sealing sealing structure.
Preferably, the free end setting threaded connector of the tube socket forms first electrode, and pipe cap free end is provided with Through-hole forms second electrode.
Preferably, the die assemblies to include by tube core solder be successively in coaxial welding power on pole piece, tube core and under Electrode slice;The area for powering on pole piece is less than the area of lower electrode slice;It powers on pole piece and stem welds, lower electrode slice and tube socket weld It connects.
Preferably, metal wire and metallic sheath are all made of red copper and are made.
A kind of Metal Packaging rectifier diode manufacturing method, includes the following steps,
Top electrode matrix and lower electrode matrix are carried out Nickel Plating Treatment by step 1, then in hydrogen atmosphere, with 790~ 820 DEG C of temperature, constant temperature handle 25~35 minutes and obtain powering on pole piece and lower electrode slice;
Step 2, will power on pole piece, tube core and lower electrode slice and tube core solder is fitted into sintering in mold and tube core group is made Part;
Step 3 by die assemblies, and is not electroplated and is carried out the tube socket, stem and positioning of cleaning pretreatment Ring is fitted into mold, load solder after 380~410 DEG C at a temperature of be sintered, be finally inserted in pipe cap, and by with The Metal Packaging rectifier diode is obtained after the soldering and sealing of tube socket.
Further, in step 1 when nickel plating, blasting pressure be 2~4kg, nickel-plating liquid proportion in sodium hypophosphite content not More than 8g.
Further, the stem is woven by multiply metal wire, and both ends pass through metallic sheath for metal wire bag fastening It is fixed.
Compared with prior art, the invention has the following beneficial technical effects:
Diode of the present invention realizes die assemblies and pipe cap by the stem being knitted to form by multiply metal wire Connection, formed second electrode, increase the high current tolerance and reliability of current path, can satisfy greater than 5A electricity The use demand of stream, heat-sinking capability is strong, simple in sturcture, ingenious in design;It and is the sintering for ensuring strand copper wire and die assemblies Viscous profit quality, strand copper wire both ends are packed tightly with metallic sheath and are in the form of a column, ensure that quality of connection and on state characteristic.
Further, the setting of positioning ring ensures the sintering positioning and sintering quality of die assemblies and stem, avoids Stem during the manufacturing deviates, and improves product quality and reliability.
Further, by the processing respectively to tube socket and pipe cap, the whole assembly properties and connection of diode are improved Stability.
Method of the present invention is realized by welding, sintering and the soldering and sealing of pipe cap under successively different condition to rectification two The structure of pole pipe connects and Metal Packaging;Using the Nickel Plating Treatment to power-on and power-off pole piece, the sintering quality of die assemblies ensure that And its reliability;It is used cooperatively again with unplated tube socket, stem, red copper ring, by being pre-processed to part, it is ensured that The good viscous profit of part and solder is realized the stabilization, reliable, quickly of die assemblies and naked copper tube socket, stem, red copper ring Direct sintering.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of Metal Packaging rectifier diode described in the embodiment of the present invention.
Fig. 2 is the structure top view of positioning ring described in the embodiment of the present invention.
Fig. 3 is the structure top view of die assemblies described in the embodiment of the present invention.
Fig. 4 is the cross-sectional view of Fig. 3 described in the embodiment of the present invention.
Fig. 5 is the structural schematic diagram of stem described in the embodiment of the present invention.
In figure: tube socket 1, die assemblies 2, stem 3, pipe cap 4, soldering and sealing structure 5, positioning ring 6;Tube core solder 21, powers on Pole piece 22, tube core 23, lower electrode slice 24;Metal wire 31, metallic sheath 32;Ceramic insulator 41.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and It is not to limit.
A kind of Metal Packaging rectifier diode of the present invention, as Figure 1-Figure 5, including tube socket 1, die assemblies 2, stem 3 and pipe cap 4;Tube socket 1 and pipe cap 4 are respectively formed the first and second electrode, and the die assemblies 2 are welded on tube socket 1, stem 3 One end is welded on die assemblies 2, and the other end is fixedly connected with pipe cap 4;Stem 3 across pipe cap 4 be arranged, pipe cap 4 respectively with pipe Seat 1 and stem 3 are tightly connected;The stem 3 is knitted to form by multiply metal wire 31, and both ends are provided with for fastening gold Belong to the metallic sheath 32 of line.
Wherein, one end outer cover that stem 3 and die assemblies 2 weld be equipped with positioning ring 6, positioning ring 6 and stem 3 with And die assemblies 2 are welded as a whole.The part that stem 3 is tightly connected on pipe cap 4 is provided with ceramic insulator 41, pipe cap 4 Lower end is tightly connected by soldering and sealing structure 5 and tube socket 1.The free end setting threaded connector of tube socket 1 forms first electrode, pipe cap 4 free ends are provided with through-hole and form second electrode.Die assemblies 2 include by tube core solder 21 successively in the top electrode of coaxial welding Piece 22, tube core 23 and lower electrode slice 24;The area for powering on pole piece 22 is less than the area of lower electrode slice 24;Power on pole piece 22 and lead Column 3 welds, and lower electrode slice 24 is welded with tube socket 1.Metal wire 31 and metallic sheath 32 are all made of red copper and are made.
Method of the present invention includes the following steps,
Upper/lower electrode matrix is first carried out Nickel Plating Treatment: selecting suitable 2~4kg of blasting pressure by step 1;Nickel-plating liquid is matched The content of strict control sodium hypophosphite, must not exceed 8g than in;Alloy, alloy temperature are carried out after the nickel plating of power-on and power-off pole piece 790~820 DEG C of degree constant temperature time 25~35 minutes, leads to hydrogen.In this preferred embodiment, blasting pressure uses 2.5~3kg, alloy 810 DEG C of temperature, constant temperature time 30 minutes;
Step 2, will power on pole piece 22, tube core 23 and lower electrode slice 24 and tube core solder 21 is fitted into mold the system that is sintered At die assemblies 2, Test And Checkout is carried out to burned die assemblies.
Step 3 by die assemblies 2, and is not electroplated and is carried out the tube socket 1 of cleaning pretreatment, stem 3 and fixed Position ring 6, is fitted into mold, filling solder after 380~410 DEG C at a temperature of be sintered, be finally inserted in pipe cap 4 and sealed Weldering, and the Metal Packaging rectifier diode is obtained after fixed pipe cap 4.By forming soldering and sealing structure 5 after the sealing cap to pipe cap 4.
Wherein, tube socket, stem, red copper ring are unplated, are naked copper, for the good viscous profit for ensuring solder, cope with part Pre-processed, and by die assemblies and naked copper tube socket, stem, red copper ring direct sintering, through x-ray fluoroscopy, naked copper directly with The bad viscous humidity of die assemblies sintering has controlled within 8%, reaches advanced world standards.
The stem used is strand copper wire, to ensure that profit quality is glued in the sintering of strand copper wire and die assemblies, by multiply Copper wire both ends are packed tightly with red copper set.Positioning ring made of red copper is for ensuring that the sintering of die assemblies and stem positions and burning Tie quality.
Usually used diode is mostly plastic packaging or glassivation encapsulation diode, and operating current IF is small, and IF value is in 5A Hereinafter, and product can only be radiated by the outer lead at both ends, heat dissipation effect is poor, and is unable to satisfy user to high current diode Demand;The present invention relates to a kind of high current Metal Packaging rectifier diodes, and the work electricity of product is greatly improved using the structure Stream, heat-sinking capability, qualification rate and reliability, this operation, is cured in technical papers by significant effect in actual operation, and It is widely used in the batch production of product;High current Metal Packaging rectifier diode of the present invention, as a kind of new varieties, new knot Structure, it operating current is big, heat-sinking capability in terms of have obviously advantage, high current metal envelope of the present invention The IF of dress rectifier diode has reached 35A~60A, and product is with operating current is big, heat-sinking capability is strong, credit rating is high, reliable Property it is horizontal high the features such as.

Claims (9)

1. a kind of Metal Packaging rectifier diode, which is characterized in that including tube socket (1), die assemblies (2), stem (3) and pipe Cap (4);Tube socket (1) and pipe cap (4) are respectively formed the first and second electrode;
The die assemblies (2) are welded on tube socket (1), and one end of stem (3) is welded on die assemblies (2), the other end It is fixedly connected with pipe cap (4);Stem (3) is arranged across pipe cap (4), and pipe cap (4) is sealed with tube socket (1) and stem (3) respectively Connection;
The stem (3) is knitted to form by multiply metal wire (31), and both ends are provided with the metallic sheath for fastening metal line (32)。
2. a kind of Metal Packaging rectifier diode according to claim 1, which is characterized in that the stem (3) with One end outer cover of die assemblies (2) welding is equipped with positioning ring (6), positioning ring (6) and stem (3) and die assemblies (2) It is welded as a whole.
3. a kind of Metal Packaging rectifier diode according to claim 1, which is characterized in that close on the pipe cap (4) The part of envelope connecting lead wire column (3) is provided with ceramic insulator (41), passes through soldering and sealing structure (5) between pipe cap (4) and tube socket (1) It is tightly connected.
4. a kind of Metal Packaging rectifier diode according to claim 1, which is characterized in that the tube socket (1) from First electrode is formed by end setting threaded connector, pipe cap (4) free end is provided with through-hole and forms second electrode.
5. a kind of Metal Packaging rectifier diode according to claim 1, which is characterized in that the die assemblies (2) Including successively powering on pole piece (22), tube core (23) and lower electrode slice (24) in coaxial welding by tube core solder (21);Top electrode The area of piece (22) is less than the area of lower electrode slice (24);Pole piece (22) and stem (3) are powered on to weld, lower electrode slice (24) with Tube socket (1) welding.
6. a kind of Metal Packaging rectifier diode according to claim 1, which is characterized in that metal wire (31) and metallic sheath (32) red copper is all made of to be made.
7. a kind of Metal Packaging rectifier diode manufacturing method, which is characterized in that include the following steps,
Top electrode matrix and lower electrode matrix are carried out Nickel Plating Treatment, then in hydrogen atmosphere, with 790~820 DEG C by step 1 Temperature, constant temperature handles and obtains powering on pole piece (22) and lower electrode slice (24) for 25~35 minutes;
Step 2 will power on pole piece (22), and tube core (23) and lower electrode slice (24) and tube core solder (21) are fitted into mold and burn Die assemblies (2) are made in knot;
Step 3, by die assemblies (2), and be not electroplated and carried out the tube socket (1) of cleaning pretreatment, stem (3) and Positioning ring (6), is fitted into mold, load solder after 380~410 DEG C at a temperature of be sintered, be finally inserted in pipe cap (4) In, and by obtaining the Metal Packaging rectifier diode after the soldering and sealing with tube socket (1).
8. a kind of Metal Packaging rectifier diode manufacturing method according to claim 7, which is characterized in that plated in step 1 When nickel, blasting pressure is 2~4kg, and the content of sodium hypophosphite is no more than 8g in nickel-plating liquid proportion.
9. a kind of Metal Packaging rectifier diode manufacturing method according to claim 7, which is characterized in that the lead Column (3) is woven by multiply metal wire (31), and metal wire (31) is packed tightly fixation by metallic sheath (32) by both ends.
CN201810737044.0A 2018-07-06 2018-07-06 Metal-packaged rectifier diode and manufacturing method thereof Active CN108987363B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113380622A (en) * 2021-06-11 2021-09-10 青岛海宜丰电力电子有限公司 High-temperature diode preparation method and high-temperature diode
RU2757166C1 (en) * 2021-03-22 2021-10-11 Акционерное общество «Аэроэлектромаш» Diode for rotary rectifier of synchronous electric machine
WO2022146370A1 (en) * 2020-12-31 2022-07-07 Atatürk Üni̇versi̇tesi̇ Bi̇li̇msel Araştirma Projeleri̇ Bi̇ri̇mi̇ Package system for high current diodes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202084668U (en) * 2011-05-12 2011-12-21 无锡市东杨电子有限公司 High-capacity and high-power motive module and flexible connecting strip thereof
CN102709276A (en) * 2012-06-16 2012-10-03 中国振华集团永光电子有限公司 Low-capacity metal packaged silicon transient voltage suppressor and manufacturing method thereof
CN204167286U (en) * 2014-09-29 2015-02-18 西安卫光科技有限公司 A kind of big current diode chip encapsulating structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202084668U (en) * 2011-05-12 2011-12-21 无锡市东杨电子有限公司 High-capacity and high-power motive module and flexible connecting strip thereof
CN102709276A (en) * 2012-06-16 2012-10-03 中国振华集团永光电子有限公司 Low-capacity metal packaged silicon transient voltage suppressor and manufacturing method thereof
CN204167286U (en) * 2014-09-29 2015-02-18 西安卫光科技有限公司 A kind of big current diode chip encapsulating structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022146370A1 (en) * 2020-12-31 2022-07-07 Atatürk Üni̇versi̇tesi̇ Bi̇li̇msel Araştirma Projeleri̇ Bi̇ri̇mi̇ Package system for high current diodes
RU2757166C1 (en) * 2021-03-22 2021-10-11 Акционерное общество «Аэроэлектромаш» Diode for rotary rectifier of synchronous electric machine
CN113380622A (en) * 2021-06-11 2021-09-10 青岛海宜丰电力电子有限公司 High-temperature diode preparation method and high-temperature diode

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