JP3039395U - Rectangular Chip Package Copolar Resistor - Google Patents

Abstract

(57) Abstract: In a bipolar resistor having a plurality of resistors in the same package, one end of which is connected to each other and the other end of which is independently wired, wiring of a circuit is simple. Provided is a rectangular chip package bipolar resistor in which the area occupied by wiring is minimized and a large number of elements can be easily connected in series. A plurality of resistors (3) are provided inside a rectangular package (3).
0, 31, 32 are buried and a plurality of resistors 30, 31, 32 are embedded.
One end of the package is jointly connected, and the connected both ends are package 3
Connected to the surface mount terminals 3A and 3B provided outside the
The end portions of the plurality of resistors 30, 31, 32 that are not jointly connected are independently connected to the plurality of surface mount terminals 30A, 31A, 32A provided outside the package 3, respectively. Square chip package bipolar resistor.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a rectangular chip package bipolar resistor that can be surface mounted on a circuit board.

[0002]

[Prior art]

 In response to the miniaturization of electronic parts, the structure of the co-polar resistance wiring has come to be used, and its circuit diagram is almost as shown in FIG. In this circuit, an integral bipolar resistance wiring is covered with a cover. In such a structure, convenience during automated production should also be considered.

As shown in FIG. 2, the structure of a conventional resistor using a unipolar resistance wiring has a structure in which a plurality of resistance elements are molded inside a cover body, and one end of the resistance element is a cover body 1. It has a structure protruding to the outside. That is, several resistors 10, 11, 12, ... (Represented by a resistance symbol shown by a dotted line in the drawing) are embedded in the cover 1, and the resistors 10, 11, 12, 12, ... are jointly connected at one end. The ends of the resistors 10, 11, 12, ... That are not jointly connected have metal legs 10A, 11A, 12A, ... Extending into the insertion holes 40A on the circuit board 40, and soldering. , The circuit board 40 and the legs 10A, 11A, 12A, ... Are connected.

Since this structure is provided on the single circuit board 40, it is extremely convenient for wiring on the circuit board 40. However, since it is necessary to provide the circuit board 40 with the insertion hole 40A, it is difficult to automate the insertion work. Another disadvantage is that the wiring occupies a large area due to the insertion hole.

After that, the resistance wiring has changed from the structure of the conventional one-sided connection leg coating insertion type resistor as described above to the structure of the rectangular surface mount package, and its application has become wider.

As shown in FIG. 3, the structure of this square surface mount chip package resistor (hereinafter simply referred to as a square resistor) has a structure in which a rectangular package 2 has several resistors 20, 21. , 22 ... Are embedded (the resistors are shown by the resistance symbol drawn in the package in the figure by the dotted line), and the resistors 20, 21, 22, ... Are connected to each other. , Connected to a large number of two rows of surface mount terminals 20A, 21A, 22A, ... And 20B, 21B, 22B, .. Has been done.

As another form, as shown in FIG. 4, several resistors 20, 21, 22, ... Are embedded in a package 2 having a rectangular shape (indicated by a dotted line in the package in the figure). The resistors are shown by the drawn resistance symbols.) Both ends of each resistor 20, 21, 22, ... Are not connected, and the limbs of each resistor are two rows provided outside the package 2. , And 20B, 21B, 22B, ... And a plurality of surface mount terminals 20A, 21A, 22A ,.

When these resistors are connected to the circuit board 50, the resistors are connected to the connection electrodes provided on the circuit board 50 corresponding to the resistors 20, 21, 22 ,. Will be done. This connection forms a joint conductor circuit 50A in which the other ends of the resistors 20, 21, 22, ... Corresponding to the surface mount terminals 21A, 21A, 22A ,. , And the surface mount terminals 21A, 21A, 22A, ... In this row. Then, power is introduced from the common conductor circuit 50A to supply electricity to the resistance wiring. Further, the circuit board 50 corresponds to the surface mounting terminals 20B, 21B, 22B, ... At the other end of the resistors 20, 21, 22 ,. 50D, ... Are formed. As a result, the common conductor circuit 50A and the branch conductor circuits 50B, 50C, 50D, ... Above the surface mounted terminals 20A, 21A, 22A ,. To form a bipolar resistance wiring structure.

This type of structure has the advantage that the wiring area for automation of the manufacturing process used is comparatively smaller than the conventional one. However, as the size becomes smaller, the degree of integration and integration on the circuit board becomes higher, and there are some unavoidable limitations in use. For example, in the wiring of the circuit board 50, it is necessary to use a multilayer board wiring. At the same time, when the multilayer wiring is provided on the circuit board 50, the problem that the through holes 51, 52, ... Are naturally present occurs. In addition to this, since it is difficult to maintain the same order as the connection order of the resistance wirings that have advanced on the circuit board 50, it is difficult to maintain the same order, which is inconvenient for the user to apply.

[0010]

[Problems to be solved by the device]

 Therefore, an object of the present invention is to solve the above-mentioned defect of the rectangular resistor having the bipolar resistance wiring structure, to make the wiring convenient when the bipolar resistance wiring is assembled on the circuit board, and to realize automation. It is an object of the present invention to provide a prismatic bipolar resistor that does not affect the assembly work.

[0011]

[Means for Solving the Problems]

 The present invention for achieving the above object is a surface mount device in which a plurality of resistors are embedded in a rectangular package, one ends of the resistors are jointly connected, and both ends of the resistors are provided outside the package. A rectangular chip, which is connected to a terminal, and the ends of the plurality of resistors that are not jointly connected are independently connected to a plurality of surface mount terminals that are individually provided outside the package. It is a packaged bipolar resistor.

With such a configuration, when the rectangular chip package bipolar resistor of the present invention is mounted on a circuit board, wiring is convenient and automatic assembly work is facilitated.

[0013]

[Embodiment of the invention]

 Specific embodiments to which the present invention is applied will be described below with reference to the drawings.

FIG. 5 is a structural diagram of a rectangular co-polar resistor to which the present invention is applied. As shown in the figure, in this rectangular chip package bipolar resistor, several resistors 30, 31, 32, ... Are embedded in a rectangular package 3 (the resistors are indicated by dotted lines in the package in the figure). , And one end of each of the resistors 30, 31, 32, ... Is jointly connected inside the package 3. Both sides of the joint connecting end are separately connected to joint connecting surface mounting terminals 3A, 3B provided outside the package 3, and serve as joint electrodes of the resistors 30, 31, 32 ,. The other ends of the resistors are connected to the surface mount terminals 30A, 31A, 32A, ... Which are not connected to each other and are individually directed to the outside of the package 3.

Therefore, the circuit arrangement of the circuit board 60 is such that the joint connection circuits 60A and 60B corresponding to the joint connection surface mounting terminals 3A and 3B of the resistors 30, 31, 32, ... Connect with 3A and 3B. In addition, power is introduced by the joint connection circuits 60A and 60B to provide electricity for use in resistance wiring. Further, on the circuit board 60, several tributary connection circuits 60C, 60D, 60E, ... Are separately formed corresponding to the surface mounting terminals 30A, 31A, 32A of the resistors 30, 31, 32, respectively. Connect to the mounting terminals 30A, 31A, 32A, ....

As a result, the joint connection circuits 60A, 60B and the tributary connection circuits 60C, 60D in which the joint connection surface mounting terminals 3A, 3B and the surface mounting terminals 30A, 31A, 32A, ... , 60E, ..., The prismatic bipolar resistor of the present invention and the circuit are combined to form one integral action.

The crystal plate type co-polar resistor of the present invention can be easily wired on the circuit board, as can be seen by comparing with the above-mentioned conventional rectangular resistors (shown in FIGS. 3 and 4). You will be able to do it.

Next, FIG. 6 shows an embodiment of the series connection of the rectangular bipolar resistor 3 of the present invention, in which a plurality of resistors 3 of the present invention are connected in series to the circuit board 61. Is. By using the resistor 3 according to the present invention, it is possible to reach a large number of wirings without changing the joint connection form in the resistor 3 and without changing the order of connecting wirings. This is another effect of the present invention.

It should be noted that the above description is an embodiment to which the present invention is applied, and improvements and changes made based on the concept of the present invention can be made by those who belong to the field of the present invention in the specification and the drawings of the present application. Of course, it is possible to do what is appropriate within the scope of the spirit shown.

[0020]

[Effect of the invention]

 As described above, according to the rectangular chip package bipolar resistor of the present invention, there are certain advantages in production and use as compared with the conventional rectangular resistors, the circuit wiring is extremely simple, and the through hole This eliminates the need for a single-layer circuit board, simultaneously minimizes the wiring area, and makes it possible to easily connect multiple resistors in series.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of bipolar resistance wiring.

FIG. 2 is a view for explaining a structure of a conventional one-sided connecting leg insertion type resistor having a bipolar resistance wiring structure.

FIG. 3 is a diagram illustrating a structure of a conventional rectangular resistor having a bipolar resistance wiring structure.

FIG. 4 is a view for explaining the structure of another form of a conventional rectangular resistor having a bipolar resistance wiring structure.

FIG. 5 is a view illustrating a structure of a rectangular chip package bipolar resistor according to the present invention.

FIG. 6 is a view showing an example of connecting the rectangular chip package bipolar resistors according to the present invention in series.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cover 2 ... Rectangular chip package co-polar resistor 3 ... Rectangular chip package co-polar resistor 3A, 3B ... Joint connection surface mounting terminal 10A, 11A, 12A ... Metal insertion leg 10, 11, 12 ... Resistor 20 , 21, 22 ... Resistors 20A, 21A, 22A ... Surface mount terminals 20B, 21B, 22B ... Surface mount terminals 30, 31, 32 ... Resistors 30A, 31A, 32A ... Surface mount terminals 40 ... Circuit board 40A ... Insert hole 50, 60, 61 ... Circuit board 50A ... Joint conductor circuit 50B, 50C, 50D ... Branch conductor circuit 51, 52 ... Through hole 60, 61 ... Circuit board 60A, 60B ... Joint connection circuit 60C, 60D, 60E ... Branch current Connection circuit

Claims (1)

[Utility model registration claims] 1. A plurality of resistors are embedded in a rectangular package, one ends of the plurality of resistors are jointly connected, and both ends of the resistors are connected to a surface mount terminal provided outside the package. A rectangular chip package bipolar resistor, wherein the ends of the resistors that are not jointly connected are independently connected to a plurality of surface mount terminals that are individually provided outside the package.