CN214588268U - Anti-surge sampling resistor - Google Patents
Anti-surge sampling resistor Download PDFInfo
- Publication number
- CN214588268U CN214588268U CN202120638878.3U CN202120638878U CN214588268U CN 214588268 U CN214588268 U CN 214588268U CN 202120638878 U CN202120638878 U CN 202120638878U CN 214588268 U CN214588268 U CN 214588268U
- Authority
- CN
- China
- Prior art keywords
- resistor
- resistor body
- electrode
- resistive element
- carrier plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Details Of Resistors (AREA)
Abstract
The utility model discloses an anti-surge sampling resistor, including support plate, resistive element and protective layer, the upper and lower resistive element that sets up respectively of support plate sets up the resistive element on the opposite face of resistive element and support plate contact, and the resistive element is including the first electrode, first resistive element, middle resistive element, second resistive element and the second electrode that connect gradually, and the cross-sectional area of middle resistive element is greater than the cross-sectional area of first resistive element, second resistive element, sets up on the middle resistive element and repaiies and hinders the incision. The two ends of the carrier plate and the resistor body are flush. Sputtering layers are arranged at two ends of the carrier plate and the resistor body, and the sputtering layers are electrically connected with the upper resistor body and the lower resistor body. The utility model discloses an anti surge sampling resistor multilayer connection both can provide a route that reduces the resistance, can provide a better heat dissipation carrier, base plate again, further promotes the heat-sinking capability of resistor, promotes resistor power, prolongs the life of resistor.
Description
Technical Field
The utility model belongs to the resistor specifically is an anti surge sampling resistor.
Background
The sampling resistor is generally repaired by laser to ensure that the target resistance value is achieved at the expense of breaking down the internal structure of the resistor. The high-precision anti-surge product is suitable for occasions with high precision requirements and certain anti-surge capacity.
The anti-surge resistor in the circuit is widely applied and protects the circuit, but the traditional anti-surge resistor can generate heat and lose in time, so that the heat is concentrated, electrical elements can be damaged, and the service life of the resistor is greatly shortened.
SUMMERY OF THE UTILITY MODEL
The purpose of the invention is as follows: in order to overcome the defects existing in the prior art, the utility model aims to provide an anti-surge sampling resistor with good heat dissipation effect.
The technical scheme is as follows: an anti surge sampling resistor, including support plate, resistive element and protective layer, the upper and lower resistive element that sets up respectively of support plate sets up the resistive element on the opposite face of resistive element and support plate contact, the resistive element is including the first electrode, first resistive element, middle resistive element, second resistive element and the second electrode that connect gradually, the cross-sectional area of middle resistive element is greater than the cross-sectional area of first resistive element, second resistive element, sets up on the middle resistive element and repaiies and hinder the incision.
Further, the two ends of the carrier plate and the resistor body are flush. Sputtering layers are arranged at two ends of the carrier plate and the resistor body, and the sputtering layers are electrically connected with the upper resistor body and the lower resistor body.
Furthermore, the carrier plate is a heat-conducting ceramic substrate and plays a role in supporting and insulating. The upper and lower surfaces of the carrier plate coated with the adhesive are attached with resistors.
Further, the cross-sectional area of the intermediate resistor body at the position of the trimming cut is smaller than the cross-sectional areas of the other positions of the intermediate resistor body, and the cross-sectional area of the intermediate resistor body at the position of the trimming cut is not smaller than the cross-sectional areas of the first resistor body and the second resistor body. The trimming notch is formed by laser trimming, and the resistance value of the resistor is controlled within a range of +/-percent.
Furthermore, the protective layer is an epoxy resin protective layer or a silica gel protective layer, and the resistance area of the product is protected through high-temperature curing molding.
Furthermore, the central axis of the first resistor body is parallel to the central axis of the second resistor body.
Furthermore, the first electrode and the second electrode are both connected with the terminal electrode, and the terminal electrode is connected with the side surface electrode. The protective layer is connected with the first resistor body, the middle resistor body and the second resistor body to form a single high-power multilayer alloy resistor. The terminal electrode is a metal terminal electrode.
The surge-resistant sampling resistor comprises a support plate, a resistor body and a protective layer, wherein the upper part and the lower part of the support plate are respectively provided with the resistor body, the opposite surface of the resistor body, which is contacted with the support plate, is provided with the protective layer, the resistor body comprises a first electrode, a second electrode, a first resistor body connected with the first electrode, a second resistor body connected with the second electrode and an intermediate resistor body connected between the first resistor body and the second resistor body, the cross-sectional area of the intermediate resistor body is larger than that of the first resistor body and that of the second resistor body, the widths of the first resistor body and the second resistor body are smaller than that of the intermediate resistor body, and the intermediate resistor body comprises a front end face connected with the first resistor body, a rear end face connected with the second resistor body, a first side face and a second side face opposite to the first side face; the outer side surface of the first resistor body is in coplanar connection with the first side surface of the middle resistor body, and the outer side surface of the second resistor body is in coplanar connection with the second side surface of the middle resistor body; the intermediate resistor is provided with a trimming notch.
Further, the resistance value of the intermediate resistor is smaller than the resistance values of the first resistor and the second resistor.
The working principle is as follows: when surge current or overload current passes through, the resistance of the middle resistor body is small, the heating value of the resistor is transferred to the first electrode, the first resistor body, the second resistor body and the second electrode at two sides from the middle, and the area close to the end electrode, so that the heat dissipation capacity is improved, and the overload resistance capacity of the resistor is enhanced.
Has the advantages that: compared with the prior art, the utility model, have following characteristics: the anti-surge sampling resistor is connected in a multilayer mode, a path for reducing the resistance value can be provided, a better heat dissipation carrier and a better base plate can be provided, the heat dissipation capacity of the resistor is further improved, the power of the resistor is improved, and the service life of the resistor is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of the resistor 2 according to the present invention.
Detailed Description
As shown in fig. 1, the anti-surge sampling resistor includes a carrier plate 1, a resistor body 2, a protective layer 3, a sputtering layer 5, a terminal electrode 6, and a side electrode 7. The carrier plate 1 is an insulating layer, disposed between the two resistor bodies 2, and plays roles of supporting, insulating, and dissipating heat. The resistor body 2 is attached to the upper surface and the lower surface of the support plate 1 which has the supporting and insulating functions, the resistor body is fully attached until no air bubbles exist in the middle, and the viscose is solidified through heating and pressurizing, so that the resistor body 2 and the support plate 1 have certain bonding strength. The resistor bodies 2 on the upper surface and the lower surface of the carrier plate 1 are symmetrical and not staggered. The protective layer 3 covers the middle area of the resistor 2 and has good adhesion to the resistor 2. The protective layer 3 is formed by using an epoxy resin protective layer or a silica gel protective layer and curing at a high temperature. The metal terminal electrodes 6 are provided on the four electrode regions at both ends of the resistor body 2 on both the upper and lower surfaces, and are electrically connected to the resistor body 2 well. The side electrodes 7 are disposed on two opposite sides of the resistor 2 and cross over the carrier 1, so that the corresponding terminal electrodes 6 and the sputtering layer 5 are electrically connected well. The sputtering layer 5 is provided at a joint between the upper and lower surfaces of the resistor body 2, and is electrically connected to both the upper and lower resistor bodies 2.
As shown in fig. 2, the pattern of each layer of the resistor body 2 is designed such that the central region is curved. The resistor 2 includes a first electrode 21, a first resistor 22, an intermediate resistor 23, a second resistor 24, and a second electrode 25 connected in this order. The cross-sectional area of the intermediate resistor 23 is larger than the cross-sectional areas of the first resistor 22 and the second resistor 24, the rectangular intermediate resistor 23 is provided with the trimming slit 4, the width of the trimming slit 4 does not exceed the distance between the intermediate resistor 23 and the top surface of the second resistor 24, and the cross-sectional area of the intermediate resistor 23 is still larger than the cross-sectional areas of the first resistor 22 and the second resistor 24 after trimming. The resistance trimming cut 4 is formed by exposure, development, etching or laser cutting, and the error between the actual resistance value and the preset resistance value after the resistance trimming of the resistor body is controlled within the range of +/-1%. The width of intermediate resistor 23 is significantly larger than that of first resistor 22 and second resistor 24 on both sides thereof, so that the resistor can withstand the impact of current.
When a surge current or an overload current passes, the resistance of the middle resistor 23 is small, the heating value of the resistor is transferred from the middle to the first electrode 21, the first resistor 22, the second resistor 24 and the second electrode 25 on both sides, and the area close to the terminal electrode, so that the heat dissipation capability is improved, and the overload resistance capability of the resistor is enhanced.
Claims (10)
1. An anti-surge sampling resistor, characterized by: the resistor comprises a carrier plate (1), a resistor body (2) and a protective layer (3), wherein the resistor body (2) is arranged on the upper portion and the lower portion of the carrier plate (1) respectively, the protective layer (3) is arranged on an opposite surface, in contact with the carrier plate (1), of the resistor body (2), the resistor body (2) comprises a first electrode (21), a first resistor body (22), a middle resistor body (23), a second resistor body (24) and a second electrode (25) which are connected in sequence, the cross section area of the middle resistor body (23) is larger than that of the first resistor body (22) and that of the second resistor body (24), and a trimming notch (4) is formed in the middle resistor body (23).
2. An anti-surge sampling resistor according to claim 1, wherein: the two ends of the carrier plate (1) and the two ends of the resistor body (2) are flush.
3. An anti-surge sampling resistor according to claim 2, wherein: sputtering layers (5) are arranged at two ends of the carrier plate (1) and the resistor body (2), and the sputtering layers (5) are electrically connected with the upper resistor body (2) and the lower resistor body (2).
4. An anti-surge sampling resistor according to claim 1, wherein: the carrier plate (1) is a heat-conducting ceramic substrate.
5. An anti-surge sampling resistor according to claim 1, wherein: the cross-sectional area of the middle resistor body (23) at the position of the trimming cut (4) is smaller than the cross-sectional area of the other positions of the middle resistor body (23), and the cross-sectional area of the middle resistor body (23) at the position of the trimming cut (4) is not smaller than the cross-sectional areas of the first resistor body (22) and the second resistor body (24).
6. An anti-surge sampling resistor according to claim 1, wherein: the central axis of the first resistor body (22) and the central axis of the second resistor body (24) are parallel to each other.
7. An anti-surge sampling resistor according to claim 1, wherein: the first electrode (21) and the second electrode (25) are connected with the end electrode (6), and the end electrode (6) is connected with the side electrode (7).
8. An anti-surge sampling resistor according to claim 7, wherein: the protective layer (3) is connected with the terminal electrode (6).
9. An anti-surge sampling resistor, characterized by: the resistor comprises a carrier plate (1), a resistor body (2) and a protective layer (3), wherein the resistor body (2) is respectively arranged at the upper part and the lower part of the carrier plate (1), the protective layer (3) is arranged on the opposite surface of the resistor body (2) contacted with the carrier plate (1), the resistor body (2) comprises a first electrode (21), a second electrode (25), a first resistor body (22) connected with the first electrode, a second resistor body (24) connected with the second electrode, and an intermediate resistor body (23) connected between the first resistor body (22) and the second resistor body (24), the cross section area of the intermediate resistor body (23) is larger than that of the first resistor body (22) and the second resistor body (24), the widths of the first resistor body (22) and the second resistor body (24) are smaller than that of the intermediate resistor body (23), and the intermediate resistor body (23) comprises a front end face connected with the first resistor body (22), a front end face, A rear end surface connected to the second resistor (24), a first side surface, and a second side surface opposite to the first side surface; the outer side surface of the first resistor body (22) is in coplanar connection with the first side surface of the middle resistor body, and the outer side surface of the second resistor body (24) is in coplanar connection with the second side surface of the middle resistor body; the intermediate resistor (23) is provided with a trimming notch (4).
10. An anti-surge sampling resistor according to claim 9, wherein: the resistance value of the intermediate resistor body (23) is smaller than the resistance values of the first resistor body (22) and the second resistor body (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120638878.3U CN214588268U (en) | 2021-03-29 | 2021-03-29 | Anti-surge sampling resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120638878.3U CN214588268U (en) | 2021-03-29 | 2021-03-29 | Anti-surge sampling resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214588268U true CN214588268U (en) | 2021-11-02 |
Family
ID=78356304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120638878.3U Active CN214588268U (en) | 2021-03-29 | 2021-03-29 | Anti-surge sampling resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214588268U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114171267A (en) * | 2021-11-16 | 2022-03-11 | 宁波鼎声微电子科技有限公司 | Anti-surge resistor and processing equipment thereof |
-
2021
- 2021-03-29 CN CN202120638878.3U patent/CN214588268U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114171267A (en) * | 2021-11-16 | 2022-03-11 | 宁波鼎声微电子科技有限公司 | Anti-surge resistor and processing equipment thereof |
| CN114171267B (en) * | 2021-11-16 | 2023-05-26 | 宁波鼎声微电子科技有限公司 | Anti-surge resistor and processing equipment thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101923928B (en) | High-frequency patch resistor and manufacturing method thereof | |
| US10354826B2 (en) | Fuse in chip design | |
| US6462318B2 (en) | Protective element | |
| US8149082B2 (en) | Resistor device | |
| CN100585767C (en) | Protection component | |
| CN210668609U (en) | Independent heat abstractor to battery electrode | |
| CN214588268U (en) | Anti-surge sampling resistor | |
| US10141088B2 (en) | Resistor | |
| JPH0760761B2 (en) | Film type power resistor assembly | |
| WO2022217750A1 (en) | High-power alloy foil resistor and manufacturing method | |
| US5252944A (en) | Film-type electrical resistor combination | |
| JP2003031105A5 (en) | ||
| CN109256247A (en) | The ceramic matrix and varistor of varistor | |
| CN112927876A (en) | High-performance surge protector valve plate and manufacturing method thereof | |
| KR101892751B1 (en) | Resistor and method for manufacturing the same | |
| CN115527736A (en) | High-temperature-resistant resistor and manufacturing method thereof | |
| TWI839960B (en) | Wafer placement table | |
| EP1615239B1 (en) | power resistor having a heat generating resistive element | |
| CN214588278U (en) | High-power resistor body | |
| CN112216452A (en) | Laminated sheet type piezoresistor and preparation method thereof | |
| US20230368949A1 (en) | Chip resistor | |
| CN219696167U (en) | Glass packaged surface-mounted thermistor | |
| CN219419026U (en) | Ceramic package type digital isolator | |
| CN211507558U (en) | Chip type fuse with metal wire type conductive fuse | |
| CN213277651U (en) | Sulfur-resistant vehicle wide-electrode thick-film resistor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |