CN206022014U - The hanging resistor in the back side - Google Patents

Abstract

The utility model proposes a kind of hanging resistor in the back side, including matrix, A faces electrode, resistive element and metal lead wire；A faces electrode is two and is symmetricly set on the two ends of body upper surface, and the bond end in top centre position and its two ends and two A faces electrode tops that resistive element is located at matrix is overlapped；Also have on resistive element and cover which and entirely during resistance trimming from physical injury and prevent which from suffering the medium protective layer of thermal breakdown in use with protective resistance body；The metal lead wire position is welded on the electrode of A faces using hot pressing Welding.Do not metallize at the resistor back side of the present utility model, hanging installation, the purpose for improving resistor frequency characteristic has been reached due to there is gap just to directly increase the distance between resistive element and ground plane and cavity bottom surface between, and due to being filled by air between gap, the dielectric constant very little of air, this indirectly improve the frequency characteristic of whole resistor again.

Description

The hanging resistor in the back side

Technical field

The utility model is related to resistor field, particularly relates to a kind of hanging resistor in back side.

Background technology

In the field of broadcast communication for developing rapidly, the design of radio-frequency devices also becomes increasingly complex, for radio frequency power resistor The requirement of device also more and more higher.For the power resistor for playing balanced action in circuit, traditional product is in some New-type radio-frequencies Its special installation and use requirement is can not meet on device.

Traditional power resistor in order to design requirement and easy for installation carried out metalized in the lower surface of matrix, But after the performance requirement of radio-frequency devices is improved, the product of back face metalization is on the contrary because resistive element and ground plane hypotelorism And causing the direct-to-ground capacitance of resistor excessive, this will directly affect the frequency characteristic of resistor.And due to present radio-frequency devices Size all reducing, so directly increasing the thickness of resistor matrix to increase the distance of resistive element and ground plane so as to reducing The method of its direct-to-ground capacitance just has certain limitation.

Utility model content

The utility model proposes a kind of hanging resistor in the back side, improves the frequency of radio frequency power resistor device, meets client's need Ask.

The technical solution of the utility model is realized in：A kind of hanging resistor in the back side, including matrix, A faces electrode, Resistive element and metal lead wire；A faces electrode is two and is symmetricly set on the two ends of body upper surface, and resistive element is located at base The top centre position and its two ends of body are overlapped with the bond end of two A faces electrode tops；Also have on resistive element and cover which Entirely from physical injury and prevent which from suffering the medium protective layer of thermal breakdown in use with protective resistance body；The gold Category lead position is welded on the electrode of A faces using hot pressing Welding, and metal lead wire is processed through 90 degree twice through chamfer angle technique Extraction is flushed with the lower surface of resistor after bending；Do not metallize at the described matrix back side.

Preferably, resistor also includes that fire-resisting protection application, the fire-resisting protection application cover whole body upper surface.

Preferably, described matrix adopts beryllium oxide ceramics.

Compared with prior art, the utility model has the advantage of：The resistor back side is not metallized, hanging installation, due to And cavity bottom surface between, there is gap just to directly increase the distance between resistive element and ground plane reached raising resistor frequency The purpose of characteristic, and due to being filled by air between gap, the dielectric constant very little of air, this indirectly improve whole The frequency characteristic of individual resistor.

Description of the drawings

Fig. 1 is structural representation of the utility model with fire-resisting protection application；

Structural representations of the Fig. 2 for the utility model media protection layer segment；

Structural representations of the Fig. 3 for the utility model resistance body portion.

In figure：1st, matrix；2nd, A faces electrode；3rd, resistive element；4th, medium protective layer；5th, metal lead wire；6th, fire-resisting protection is applied Dress.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole realities Apply example.Embodiment in based on the utility model, those of ordinary skill in the art institute under the premise of creative work is not made The every other embodiment for obtaining, belongs to the scope of the utility model protection.

Embodiment：Referring to Fig. 1, Fig. 2 and Fig. 3, plant the hanging resistor in the back side, including matrix 1, A faces electrode 2, resistive element 3 with And metal lead wire 5；A faces electrode 2 is two and is symmetricly set on the two ends of 1 upper surface of matrix, and resistive element 3 is located at matrix 1 Top centre position and the bond end of its two ends and two 2 upper surfaces of A faces electrode overlap；Also have on resistive element 3 and cover which Entirely from physical injury and prevent which from suffering the medium protective layer of thermal breakdown 4 in use with protective resistance body 3；Described Metal lead wire 5 is welded on A faces electrode 2 using hot pressing Welding, and metal lead wire 5 is processed through twice through chamfer angle technique Extraction is flushed with the lower surface of resistor after 90 degree of bendings；Do not metallize at 1 back side of described matrix.

Preferably, resistor also includes that fire-resisting protection application 6, the fire-resisting protection application 6 cover 1 upper table of whole matrix Face.

Preferably, described matrix 1 adopts beryllium oxide ceramics.

As illustrated, the utility model matrix 11, A faces electrode 2 (including A faces electrode 221,22), resistive element 3, medium are protected Sheath 4, metal lead wire 5 (including metal lead wire 51,52), fire-resisting protection application 6.Matrix 1 adopts beryllium oxide ceramics；A faces electrode 2 In the upper surface of matrix 1, resistive element 3 is located at the upper surface of matrix 1 and is overlapped with 2 bond end of A faces electrode good；Medium protective layer 4 cover whole resistive element 3 is subject to physical injury with protective resistance body 3 and prevents which from suffering thermal breakdown in use；Metal 5, lead is welded on A faces electrode 2 using hot pressing Welding and through chamfer angle technique process；Fire-resisting protection application 6 covers whole 1 upper surface of individual matrix, plays the integrality of protection lead and resistor.

The resistor back side is not metallized, and hanging installation, due to there is gap just to directly increase resistance and cavity bottom surface between The distance between body 3 and ground plane have reached the purpose for improving resistor frequency characteristic, and due to being by air between gap Filling, the dielectric constant very little of air, this indirectly improve the frequency characteristic of whole resistor again.

Chamfer angle technique cause metal lead wire 5 not directly from 1 upper surface of matrix draw, but after 90 degree of bendings twice with electricity The lower surface of resistance device flushes extraction, this considerably increases the reliability of metal lead wire 5, it is to avoid misoperation in welding process The lead for causing comes off and causes resistor to fail.

Preferred embodiment of the present utility model is the foregoing is only, not in order to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent substitution and improvements that is made etc. should be included in the utility model Protection domain within.

Claims (3)

1. the hanging resistor in a kind of back side, it is characterised in that：Including matrix (1), A faces electrode (2), resistive element (3) and metal Lead (5)；A faces electrode (2) are two and are symmetricly set on the two ends of matrix (1) upper surface, and resistive element (3) is located at matrix (1) top centre position and its two ends is overlapped with the bond end of two A faces electrode (2) upper surface；Resistive element (3) is upper to be also had Covering which entirely from physical injury and prevents which from suffering the media protection of thermal breakdown in use with protective resistance body (3) Layer (4)；Metal lead wire (5) position is welded on A faces electrode (2) using hot pressing Welding, and metal lead wire (5) is through falling Angle PROCESS FOR TREATMENT flushes extraction with the lower surface of resistor after 90 degree of bendings twice；Do not metallize at described matrix (1) back side.

2. the hanging resistor in the back side according to claim 1, it is characterised in that：Resistor also includes fire-resisting protection application (6), described fire-resisting protection application (6) cover whole matrix (1) upper surface.

3. the hanging resistor in the back side according to claim 1, it is characterised in that：Described matrix (1) adopts beryllium oxide ceramics.