CN218631537U

CN218631537U - Piezoresistor of surface mounting technology

Info

Publication number: CN218631537U
Application number: CN202221170107.7U
Authority: CN
Inventors: 陈辉; 雷德勇; 王文
Original assignee: Shenzhen Yongxuan Electronics Co ltd
Current assignee: Shenzhen Yongxuan Electronics Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2023-03-14
Anticipated expiration: 2032-05-16

Abstract

The utility model discloses a surface mounting technology's piezoresistor, including ceramic base member and attaching plate, the ceramic base member is the cuboid shape, the attaching plate is fixed to set up in the relative both sides of ceramic base member, the inside of ceramic base member is fixed and is provided with insulating substrate, the fixed electrode that is provided with on the insulating substrate, the electrode coats and is stamped Ni-Cr alloy membrane, the fixed lead wire that is provided with in bottom of electrode; the utility model relates to a surface mounting technology's piezoresistor has advantages such as small, heat dispersion is good, the resistance precision is high.

Description

Piezoresistor of surface mounting technology

Technical Field

The utility model relates to a resistor field, specifically are a surface mounting technology's piezoresistor.

Background

The resistor is a current limiting element, and after the resistor is connected in a circuit, the resistance value of the resistor is fixed, generally two pins, and the resistor can limit the current passing through a branch connected with the resistor. The voltage dependent resistor is a voltage limiting type protection device, and by utilizing the nonlinear characteristic of the voltage dependent resistor, when overvoltage appears between two electrodes of the voltage dependent resistor, the voltage dependent resistor can clamp the voltage to a relatively fixed voltage value, so that the protection of a rear-stage circuit is realized. The main parameters of the varistor are: voltage dependent voltage, current capacity, junction capacitance, response time, etc. However, the conventional piezoresistor generally has no lead wire, and silver is plated at two ends of the piezoresistor to be used as terminal electrodes, so that the piezoresistor is high in cost, and because the area of a resistor film layer with a chip structure is small, the power of the resistor is small, the resistance range is narrow, the precision is low, the working is unstable, and the piezoresistor cannot meet the development requirement of high-end electronic products.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists among the above-mentioned technique, the utility model provides a surface mounting technique's piezoresistor.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a piezoresistor of surface mounting technique, includes ceramic base member and rigging board, the ceramic base member is the cuboid shape, the rigging board is fixed set up in the relative both sides of ceramic base member, the fixed insulating substrate that is provided with in inside of ceramic base member, the fixed electrode that is provided with on the insulating substrate, the electrode coats and is stamped Ni-Cr alloy membrane, the fixed lead wire that is provided with in bottom of electrode.

By way of further illustration, the leads extend through the ceramic substrate and outside the ceramic substrate.

By way of further illustration, the leads and the attachment plate are all on the same horizontal plane.

As a further illustration, the ceramic matrix is an alumina ceramic.

By way of further illustration, the lead is in a cylindrical shape, and the lead is made of a copper alloy material with high conductivity.

To sum up, the utility model discloses following beneficial effect has: the utility model relates to a surface mounting technology's piezoresistor has advantages such as small, heat dispersion is good, the resistance precision is high, and various well, high-end electronic equipment fields such as mainly used hybrid integrated circuit, accurate electron measurement and control instrument and meter, aviation, space flight, automotive electronics utilize surface mounting technology equipment can paste the dress in the circuit board convenient and fast ground. By arranging the Ni-Cr alloy film, the problems of small power, low precision and unstable work of the common surface-mounted chip resistor are solved, so that the high precision, high stability and high reliability of the electronic equipment are improved.

Drawings

Fig. 1 is a front view of a surface mount technology varistor of the present invention;

fig. 2 is a top view of a surface mount technology varistor of the present invention;

fig. 3 is a schematic diagram of the internal structure of the ceramic substrate of the present invention.

Reference numbers in the figures:

FIG. 1-ceramic matrix; 2-a lead; 3-attaching a plate; 4-an insulating substrate; 5-Ni-Cr alloy film; 6-electrodes.

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.

As shown in fig. 1-3, a surface mount technology's varistor, includes ceramic base 1 and rigging board 3, ceramic base 1 is the cuboid shape, rigging board 3 is fixed set up in the relative both sides of ceramic base 1, the fixed insulating substrate 4 that is provided with in inside of ceramic base 1, the fixed electrode 6 that is provided with on insulating substrate 4, electrode 6 coats and is stamped Ni-Cr alloy film 5, the fixed lead wire 2 that is provided with in bottom of electrode 6.

In the present embodiment, the lead 2 penetrates the ceramic substrate 1 and extends to the outside of the ceramic substrate 1.

In this embodiment, the leads 2 and the attachment plate 3 are located on the same horizontal plane.

In the present embodiment, the ceramic substrate 1 is alumina ceramic.

In this embodiment, the lead 2 has a cylindrical shape, and the lead 2 is made of a copper alloy material with high conductivity.

In this embodiment, the main technical parameters of the varistor of the present invention are as follows: the external dimension is as follows: rated power (80 ℃) is 1/6W, 1/4W and 1/2W; the resistance value range is 20-20 MOmega; the highest precision is +/-0.01 percent; the minimum temperature coefficient is +/-2 multiplied by 10 < -5 >/K; the maximum working voltage is 200V-250V; temperature range: -50 ℃ to 120 ℃.

To sum up, the utility model relates to a surface mounting technology's piezoresistor has advantages such as small, heat dispersion is good, the resistance precision is high, and various middle-and high-end electronic equipment fields such as mainly used hybrid integrated circuit, accurate electron measurement and control instrument, aviation, space flight, automotive electronics utilize surface mounting technology equipment can paste the dress in the circuit board convenient and fast ground. By arranging the Ni-Cr alloy film 5, the problems of small power, low precision and unstable work of the common surface-mounted chip resistor are solved, so that the high precision, high stability and high reliability of the electronic equipment are improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. A surface mount technology varistor, comprising: including ceramic base member and rigging board, the ceramic base member is the cuboid shape, the rigging board is fixed set up in the relative both sides of ceramic base member, the fixed insulating base plate that is provided with in inside of ceramic base member, the last fixed electrode that is provided with of insulating base plate, the electrode coats and is stamped Ni-Cr alloy film, the fixed lead wire that is provided with in bottom of electrode.

2. A surface mount technology varistor according to claim 1, wherein: the lead penetrates through the ceramic base body and extends to the outside of the ceramic base body.

3. A surface mount technology varistor according to claim 1, wherein: the lead and the attaching plate are both positioned on the same horizontal plane.

4. A surface mount technology varistor according to claim 1, wherein: the ceramic matrix is alumina ceramic.

5. A surface mount technology varistor according to claim 1, wherein: the lead is in a cylindrical shape and made of a copper alloy material with high conductivity.