CN111880071A - Detect detection frock of PIN diode reverse bias current - Google Patents
Detect detection frock of PIN diode reverse bias current Download PDFInfo
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- CN111880071A CN111880071A CN202010858382.7A CN202010858382A CN111880071A CN 111880071 A CN111880071 A CN 111880071A CN 202010858382 A CN202010858382 A CN 202010858382A CN 111880071 A CN111880071 A CN 111880071A
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- 238000001514 detection method Methods 0.000 title claims abstract description 57
- 238000003825 pressing Methods 0.000 claims abstract description 41
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 4
- 238000010891 electric arc Methods 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 238000012216 screening Methods 0.000 abstract description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2601—Apparatus or methods therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- General Physics & Mathematics (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The invention provides a detection tool for detecting reverse bias current of PIN diodes, which can detect a plurality of PIN diodes at one time by arranging a plurality of detection stations on a test fixture, thereby improving the screening efficiency; the ejector PINs are arranged on the clamp seat and are respectively movably connected with the clamp seat, so that when the driving device pushes the pressing plate to abut against the test clamp, the ejector PINs and the PIN diode are ensured to be reliably contacted; the pressing plate is provided with the plurality of elastic sheets, so that a high-voltage signal of the detection tool can reach the cathode of the PIN diode through the elastic sheets and the ejector PINs in sequence; the metal sheet is arranged on the clamp seat, and the anodes of the PIN diodes can be grounded; through setting up the guard plate, can be for preventing the electric leakage or the electric arc that appears in the testing process to on-the-spot operating personnel's injury.
Description
Technical Field
The invention relates to the field of PIN diode detection tools, in particular to a detection tool for detecting reverse bias current of a PIN diode.
Background
The frequency hopping filter is a very important component in a frequency hopping radio station, and plays a decisive role in the performance and reliability of the frequency hopping radio station. The reliability of the frequency hopping filter product is ranked first during production. The frequency hopping filter needs PIN pipe, and every needs to use hundreds of PIN pipe welding on PCB board or metal substrate, detects after welding into semi-manufactured goods or finished product about 10% PIN pipe inefficacy, seriously influences production progress and efficiency. Therefore, before the PIN tube is used, the test is carried out, and the elements with poor performance or unqualified performance are screened. The detection of the leakage current index of the PIN tube is the most critical. At present, the leakage current index of the PIN tube is detected one by one through a universal meter, and the working efficiency is low. Therefore, in order to solve the problem, the invention provides a detection tool for detecting the reverse bias current of the PIN diode, which can greatly improve the reliability of a frequency hopping filter product.
Disclosure of Invention
In view of this, the invention provides a detection tool for detecting reverse bias current of a PIN diode, which can greatly improve the reliability of a frequency hopping filter product.
The technical scheme of the invention is realized as follows: the invention provides a detection tool for detecting reverse bias current of a PIN diode, which comprises:
the shell is internally provided with a working power supply and a high-voltage pack; the grounding end and the power output end of the working power supply are respectively and electrically connected with the grounding end and the power end of the high-voltage package;
the test fixture is arranged on the shell and is provided with a fixture seat, and the fixture seat is provided with a plurality of detection stations at intervals, a plurality of thimbles movably connected with the fixture seat and a metal sheet serving as a negative electrode of the detection fixture;
the pressing plate is arranged on the shell and is arranged in front of the ejector pins, and a plurality of elastic sheets serving as the anode of the detection tool are arranged in positions corresponding to the ejector pins one by one; the elastic sheets are respectively and electrically connected with the high-voltage output end of the high-voltage pack;
the driving device drives the pressing plate to abut against the test fixture, when the pressing plate abuts against the test fixture, the plurality of elastic sheets respectively abut against and are connected with one ends of the plurality of ejector pins in a one-to-one corresponding mode, and the other ends of the plurality of ejector pins are respectively connected with the plurality of detection stations in a one-to-one corresponding mode;
a plurality of PIN diodes are placed on a plurality of detection stations in a one-to-one correspondence mode, anodes of the PIN diodes are connected with the metal sheet respectively, cathodes of the PIN diodes are connected with the other ends of the ejector PINs in a one-to-one correspondence mode respectively, and voltage signals of the detection tool sequentially pass through the elastic sheets (31) and the ejector PINs and reach the cathodes of the PIN diodes.
In addition to the above technical means, preferably, the driving device includes:
the bracket is arranged on the shell and provided with a guide piece;
the supporting piece is arranged on the bracket;
the rotating handle is provided with a first hinge point and a second hinge point and is hinged with the supporting piece through the first hinge point;
one end of the connecting arm is hinged with the rotating handle through a second hinge point;
one end of the pushing rod is hinged with the other end of the connecting arm, and the other end of the pushing rod penetrates through the guide piece and is fixedly connected with the pressing plate.
On the basis of the technical scheme, the device preferably further comprises a first guide rod, a second guide rod, a first guide sleeve and a second guide sleeve;
the first guide sleeve and the second guide sleeve are respectively inserted on the clamp seat, one end of the first guide rod penetrates through the first guide sleeve, the other end of the first guide rod is installed on the pressing plate, one end of the second guide rod penetrates through the second guide sleeve, and the other end of the second guide rod is installed on the pressing plate.
On the basis of the technical scheme, the automatic control system preferably further comprises a plurality of switches;
the switch is arranged on the shell, one end of the switch is connected with the high-voltage output end of the high-voltage package in the shell, and the other end of the switch is connected with the elastic pieces.
On the basis of the technical scheme, the automatic control system preferably further comprises a main switch;
the master switch is arranged on the shell, and the power output end of the working power supply in the shell is electrically connected with the power end of the high-voltage package through the master switch respectively.
On the basis of the technical scheme, the protective plate and the connecting piece are preferably further included;
the connecting piece is arranged on the clamp seat and is movably connected with the protection plate;
and a protection plate covering the jig base.
Compared with the prior art, the detection tool for detecting the reverse bias current of the PIN diode has the following beneficial effects that:
(1) by arranging a plurality of detection stations on the test fixture, a plurality of PIN diodes can be detected at one time, and the screening efficiency is improved;
(2) the ejector PINs are arranged on the clamp seat and are respectively movably connected with the clamp seat, so that when the driving device pushes the pressing plate to abut against the test clamp, the ejector PINs and the PIN diode are ensured to be reliably contacted;
(3) the pressing plate is provided with the plurality of elastic sheets, so that a high-voltage signal of the detection tool can reach the cathode of the PIN diode through the elastic sheets and the ejector PINs in sequence; the metal sheet is arranged on the clamp seat, and the anodes of the PIN diodes can be grounded;
(4) by arranging the first guide rod, the second guide rod, the first guide sleeve and the second guide sleeve, when the driving device pushes the pressing plate to abut against the test fixture, the pressing plate is prevented from deviating left and right in the moving process, and a plurality of elastic sheets can be respectively in one-to-one abutting connection with a plurality of ejector pins;
(5) through the arrangement of the plurality of switches and the main switch, the power receiving conditions of the PIN diodes and the power supply of the whole detection tool can be controlled respectively;
(6) through setting up the guard plate, can be for preventing the electric leakage or the electric arc that appears in the testing process to on-the-spot operating personnel's injury.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a perspective view of a detection tool for detecting reverse bias current of a PIN diode according to the invention;
FIG. 2 is a perspective view of the detection tool for detecting the reverse bias current of the PIN diode, with a protection plate and a connecting piece hidden;
FIG. 3 is a top view of the detection tool for detecting the reverse bias current of the PIN diode, with the protection plate and the connecting piece hidden;
fig. 4 is a schematic diagram of power connection of a detection tool for detecting reverse bias current of a PIN diode.
In the figure, 1-shell, 2-test fixture, 21-fixture seat, 22-detection station, 23-thimble, 24-sheet metal, 3-pressing plate, 31-elastic sheet, 4-driving device, 41-bracket, 42-supporting piece, 43-rotating handle, 44-connecting arm, 45-pushing rod, 46-guiding piece, 5-first guiding rod, 6-second guiding rod, 7-first guiding sleeve, 8-second guiding sleeve, 9-switch, 10-main switch, 11-protection plate and 12-connecting piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the detection tool for detecting the reverse bias current of the PIN diode of the present invention includes a housing 1, a test fixture 2, a pressing plate 3 and a driving device 4.
Casing 1, inside is provided with accommodation space, and accommodation space is provided with working power supply and high-voltage bag, and wherein, working power supply provides operating voltage for the high-voltage bag, and the high-voltage bag is used for providing the high pressure that detects PIN pipe reverse bias current. In this embodiment, the ground terminal and the power output terminal of the working power supply are electrically connected to the ground terminal and the power terminal of the high-voltage package, respectively.
And the test fixture 2 is used for placing the PIN diode to be tested. As shown in fig. 2, the test fixture 2 is fixedly mounted on the housing 1, and is provided with a fixture seat 21, and the fixture seat 21 is provided with a plurality of detection stations 22, a plurality of ejector pins 23 movably connected with the fixture seat 21, and a metal sheet 24 as a negative electrode of the detection fixture at intervals.
The pressing plate 3 is arranged on the shell 1 and is arranged in front of the ejector pins 23 as shown in fig. 2, and a plurality of elastic sheets 31 serving as anodes of the detection tool are arranged at positions corresponding to the ejector pins 23 one by one; the plurality of elastic pieces 31 are electrically connected with the high-voltage output end of the high-voltage pack respectively.
The driving device 4 drives the pressing plate 3 to abut against the test fixture 2, when abutting against, the plurality of elastic sheets 31 respectively abut against and are connected with one ends of the plurality of thimbles 23 in a one-to-one correspondence mode, and the other ends of the plurality of thimbles 23 respectively abut against and are connected with the plurality of detection stations 22 in a one-to-one correspondence mode. When not supported, the thimble 23 is not connected with the detection station 22; when the metal is propped against the metal, the thimble 23 moves forwards under the pushing of the pressing plate 3 and is contacted with the detection station 22, and due to the conductivity of the metal, a high-voltage signal output by the high-voltage package reaches the detection station 22 through the elastic sheet 31 and the thimble 23; the PIN diode to be detected is placed at the detection station 22, the anodes of the PIN diodes are respectively connected with the metal sheet 24, the cathodes of the PIN diodes are respectively connected with the other ends of the ejector PINs 23 in a one-to-one correspondence mode, and voltage signals of the detection tool sequentially pass through the elastic sheets 31 and the ejector PINs 23 and reach the cathodes of the PIN diodes.
Further preferably, in the present embodiment, as shown in fig. 2, the driving device 4 includes: a bracket 41, a support 42, a rotating handle 43, a connecting arm 44 and a push rod 45; the bracket 41 is provided on the housing 1, and the support member 42 and the guide member 46 are provided on the bracket 41; the rotating handle 43 is provided with a first hinge point 431 and a second hinge point 432, the rotating handle 43 is hinged with the supporting member 42 through the first hinge point 431, is hinged with one end of the connecting arm 44 through the second hinge point 432, the other end of the connecting arm 44 is hinged with one end of the pushing rod 45, and the other end of the pushing rod 45 passes through the guide member 46 and is fixedly connected with the pressure plate 3. Specifically, when the driving device 4 drives the pressing plate 3 to abut against the test fixture 2, the rotating handle 43 is rotated in a direction close to the pressing plate 3, at this time, the rotating handle 43 uses the first hinge point 431 as a rotating center to push the connecting arm 44, and the connecting arm 44 further drives the pushing rod 45 to push the pressing plate 3 to abut against the test fixture 2; when drive arrangement 4 drives clamp 3 and keeps away from test fixture 2, rotate rotatory handle 43 along the direction of keeping away from clamp 3, same principle drives catch bar 45 and drives clamp 3 and keep away from test fixture 2.
Further preferably, in order to enable the elastic sheets 31 on the pressing plate 3 to correspond to the ejector pins 23 one by one under the driving of the driving device 4 and ensure good contact, as shown in fig. 3, a first guide rod 5, a second guide rod 6, a first guide sleeve 7 and a second guide sleeve 8 are provided in this embodiment; the first guide sleeve 7 and the second guide sleeve 8 are respectively inserted on the clamp seat 21, one end of the first guide rod 5 penetrates through the first guide sleeve 7, the other end of the first guide rod 5 is installed on the pressing plate 3, one end of the second guide rod 6 penetrates through the second guide sleeve 8, and the other end of the second guide rod 6 is installed on the pressing plate 3. When the driving device 4 pushes the pressing plate 3 to move towards the test fixture 2, the pressing plate 3 drives the first guide rod 5 and the second guide rod 6 to move forwards along the first guide sleeve 7 and the second guide sleeve 8 respectively.
Further preferably, in this embodiment, a plurality of switches 9 and a main switch 10 are further provided. The switches 9 respectively control the power receiving conditions of the PIN diodes; the master switch 10 controls the power supply of the whole detection tool. Specifically, as shown in fig. 4, the switches 9 are arranged on the housing 1, and one ends of the switches 9 are respectively connected with the high-voltage output end of the high-voltage pack inside the housing 1, and the other ends of the switches 9 are respectively connected with the elastic pieces 31; the main switch 10 is disposed on the housing 1, and an output terminal of the power supply inside the housing 1 is electrically connected to a power supply terminal of the high-voltage package through the main switch 10.
Further preferably, when detecting the reverse bias current of the PIN diode, the high-voltage package is used to output a high-voltage signal to the PIN diode, so that, in order to prevent the occurrence of electric leakage or the damage of an electric arc occurring in the detection process to a field operator, in this embodiment, as shown in fig. 1, a protection plate 11 and a connecting piece 12 are provided, and the connecting piece 12 is arranged on the clamp seat 21 and movably connected with the protection plate 11; the protection plate 11 is rotatably disposed on the jig base 21, and the protection plate 11 may cover the inspection station 22, the plurality of ejector pins 23, and the metal sheet 24.
The working principle of the embodiment is as follows: placing a plurality of PIN diodes on a plurality of detection stations 22 in a one-to-one correspondence manner, connecting anodes of the PIN diodes with a metal sheet 24 respectively, rotating a rotating handle 43 in a direction close to a pressing plate 3, wherein the rotating handle 43 uses a first hinge point 431 as a rotating center to push a connecting arm 44, the connecting arm 44 further drives a pushing rod 45 to push the pressing plate 3 to support the test fixture 2, so that a plurality of elastic sheets 31 on the pressing plate 3 are respectively connected with a plurality of thimbles 23 in an abutting manner in a one-to-one correspondence manner, and under the pushing force action of the pressing plate 3, the plurality of thimbles 23 are connected with the detection stations 22, cathodes of the PIN diodes are respectively connected with the thimbles 23 in a one-to-one correspondence manner, toggling a switch 9 corresponding to the PIN diode, so that a high-voltage signal of the detection fixture sequentially passes through the elastic sheets 31 and the thimbles 23 to reach, after the detection is completed, the rotating handle 43 is rotated in the direction away from the pressing plate 3, and the pressing plate 3 is driven to be away from the test fixture 2 by the same principle.
The beneficial effect of this embodiment does: by arranging the plurality of detection stations 22 on the test fixture 2, a plurality of PIN diodes can be detected at one time, and the screening efficiency is improved;
by arranging the plurality of ejector PINs 23 on the clamp seat 21 and movably connecting the plurality of ejector PINs 23 with the clamp seat 21 respectively, the ejector PINs 23 can be ensured to be reliably contacted with the PIN diode when the driving device 4 pushes the pressing plate 3 to abut against the test clamp 2;
by arranging the plurality of elastic sheets 31 on the pressing plate 3, a high-voltage signal of the detection tool can reach the cathode of the PIN diode through the elastic sheets 31 and the ejector PINs 23 in sequence; the clamp seat 21 is provided with a metal sheet 24 which can be used for grounding the anodes of the PIN diodes;
by arranging the first guide rod 5, the second guide rod 6, the first guide sleeve 7 and the second guide sleeve 8, when the driving device 4 pushes the pressing plate 3 to abut against the test fixture 2, the pressing plate 3 is ensured not to deviate left and right in the moving process, and a plurality of elastic sheets 31 are ensured to be correspondingly abutted and connected with a plurality of ejector pins 23 one by one;
through the arrangement of the switches 9 and the main switch 10, the power receiving conditions of the PIN diodes and the power supply of the whole detection tool can be controlled respectively;
through setting up guard plate 11, can be for preventing the electric leakage or the electric arc that appears in the testing process from the injury to field operation personnel.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a detect detection frock of PIN diode reverse bias current which characterized in that: the method comprises the following steps:
the device comprises a shell (1) internally provided with a working power supply and a high-voltage pack; the grounding end and the power output end of the working power supply are respectively and electrically connected with the grounding end and the power end of the high-voltage package;
the test fixture (2) is arranged on the shell (1) and is provided with a fixture seat (21), and a plurality of detection stations (22), a plurality of ejector pins (23) movably connected with the fixture seat (21) and a metal sheet (24) serving as a negative electrode of the detection fixture are arranged on the fixture seat (21) at intervals;
the pressing plate (3) is arranged on the shell (1), is arranged at the front part of the ejector pins (23), and is provided with a plurality of elastic sheets (31) serving as the anode of the detection tool at positions corresponding to the ejector pins (23); the elastic sheets (31) are respectively and electrically connected with the high-voltage output end of the high-voltage pack;
the driving device (4) drives the pressing plate (3) to abut against the test fixture (2), when the pressing plate abuts against the test fixture, the plurality of elastic sheets (31) are respectively abutted against and connected with one end of the plurality of ejector pins (23) in a one-to-one corresponding mode, and the other ends of the plurality of ejector pins (23) are respectively connected with the plurality of detection stations (22) in a one-to-one corresponding mode;
a plurality of PIN diodes are correspondingly placed on a plurality of detection stations (22) one by one, anodes of the PIN diodes are respectively connected with metal sheets (24), cathodes of the PIN diodes are respectively connected with the other ends of the ejector PINs (23) in one-to-one correspondence, and voltage signals of the detection tool sequentially pass through the elastic sheets (31) and the ejector PINs (23) and reach the cathodes of the PIN diodes.
2. The detection tool for detecting the reverse bias current of the PIN diode according to claim 1, wherein: the drive device (4) comprises:
a bracket (41) arranged on the shell (1), wherein a guide piece (46) is arranged on the bracket (41);
a support (42) provided on the bracket (41);
a rotating handle (43) provided with a first hinge point (431) and a second hinge point (432), and hinge-connected with the support (42) through the first hinge point (431);
a connecting arm (44) having one end hinged to the rotating handle (43) through a second hinge point (432);
and one end of the pushing rod (45) is hinged with the other end of the connecting arm (44), and the other end of the pushing rod passes through the guide piece (46) and is fixedly connected with the pressing plate (3).
3. The detection tool for detecting the reverse bias current of the PIN diode according to claim 1, wherein: the device also comprises a first guide rod (5), a second guide rod (6), a first guide sleeve (7) and a second guide sleeve (8);
the clamp is characterized in that the first guide sleeve (7) and the second guide sleeve (8) are respectively inserted on the clamp seat (21), one end of the first guide rod (5) penetrates through the first guide sleeve (7), the other end of the first guide rod (5) is installed on the pressing plate (3), one end of the second guide rod (6) penetrates through the second guide sleeve (8), and the other end of the second guide rod (6) is installed on the pressing plate (3).
4. The detection tool for detecting the reverse bias current of the PIN diode according to claim 1, wherein: also comprises a plurality of switches (9);
the switch structure is characterized in that the switches (9) are arranged on the shell (1), one ends of the switches (9) are connected with a high-voltage output end of a high-voltage bag in the shell (1) respectively, and the other ends of the switches (9) are connected with the elastic sheets (31) respectively.
5. The detection tool for detecting the reverse bias current of the PIN diode according to claim 1, wherein: further comprising a main switch (10);
the main switch (10) is arranged on the shell (1), and the power output end of the working power supply in the shell (1) is electrically connected with the power end of the high-voltage package through the main switch (10).
6. The detection tool for detecting the reverse bias current of the PIN diode according to claim 1, wherein: the protective plate is characterized by also comprising a protective plate (11) and a connecting piece (12);
the connecting piece (12) is arranged on the clamp seat (21) and is movably connected with the protection plate (11);
the protection plate (11) covers the clamp seat (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010858382.7A CN111880071A (en) | 2020-08-24 | 2020-08-24 | Detect detection frock of PIN diode reverse bias current |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010858382.7A CN111880071A (en) | 2020-08-24 | 2020-08-24 | Detect detection frock of PIN diode reverse bias current |
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| CN111880071A true CN111880071A (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010858382.7A Pending CN111880071A (en) | 2020-08-24 | 2020-08-24 | Detect detection frock of PIN diode reverse bias current |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115741080A (en) * | 2022-11-17 | 2023-03-07 | 广州普今电子股份有限公司 | Lock MOS pipe and beat high pressure multi-functional frock as an organic whole |
| US11733296B2 (en) * | 2020-04-17 | 2023-08-22 | Honeywell Federal Manufacturing & Technologies, Llc | Screening method for pin diodes used in microwave limiters |
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| CN208902848U (en) * | 2018-09-03 | 2019-05-24 | 佛山市通和电子科技有限公司 | A kind of LCD TV keypad automatic detection system |
| CN109471010A (en) * | 2018-11-20 | 2019-03-15 | 苏州苏纳光电有限公司 | The RTA reliability test assembly being powered based on high temperature |
| CN209230806U (en) * | 2018-12-18 | 2019-08-09 | 申科谱自动化科技（珠海）有限公司 | A kind of multipurpose temperature-testing device |
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