JPH04207010A - Electronic parts - Google Patents

Abstract

PURPOSE:To separately record a large amount of information including lot numbers, etc., on the surface of electronic parts after recording the name of manufacturer, description of product, capacity, rated voltage, etc., on the surface by marking displaying symbols of bar codes carrying a large amount of information on an external electrode. CONSTITUTION:Displaying symbols 20a composed of bar codes are marked on the surface of an external electrode 20. The bar codes are marked by baking paste after the paste is applied, dried, and formed by pressing and carry such information as a lot number, manufacturing history of manufactured date, etc., detailed product characteristics, etc. When the displaying symbols 20a are marked on the surfaces of external electrodes on both sides, the amount of the information can be increased. It is preferable to mark the symbols 20a on the surface of the external electrodes 20 in such a way that the symbols 20a are formed by pressing a material containing a large amount of glass frit applied to the surface of the electrode 20 and then another material containing a less amount of glass frit is applied to the surface. The materials are baked after application.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic component having an external electrode, and more specifically to an electronic component capable of recording a large amount of information including history such as lot number and manufacturing date. Regarding.

Subtractive 4 ■ Illusion 1 Multilayer ceramic capacitors are used as an example of electronic components in the third
The explanation will be given with reference to a perspective view of the figure.

In the figure, 1 is a ceramic capacitor element which is an electronic component body, 2 is an external electrode having electrode paste applied to both ends thereof and fired, and a multilayer ceramic capacitor 3 is constituted by these.

Note that 4 is an internal electrode, and a ceramic capacitor element 1 is constructed by laminating a plurality of ceramic sheets 5 having internal electrodes 4 formed on their surfaces.

Incidentally, electronic components may fail during manufacture or after being mounted by a user. If you want to know the manufacturing history of this failed defective electronic component, such as the manufacturer, year, and month in which it was manufactured, or the loft number, and in the case of the multilayer ceramic capacitor 3, in addition to the capacitance and We investigate detailed product characteristics information such as rated voltage,
Is it necessary to analyze the causes of defective parts?

However, for ultra-miniaturized electronic components such as the multilayer ceramic capacitor 3, conventionally, the manufacturer's name is printed on the surface.
The capacity, rated voltage, etc. are only recorded by stamping the product name, and because the amount of information recorded is limited, it is not possible to record the manufacturing history such as the loft number, making it impossible to investigate and analyze the cause of defects. The problem was that it was difficult to

Therefore, this invention has a manufacturer's name or product name or capacity on the surface.
The object of the present invention is to provide an electronic component that can not only record rated voltage, etc., but also separately record a large amount of information including lot number, etc.

In order to solve the above-mentioned problems, the present invention is as follows: 1. An electronic component characterized in that a display symbol consisting of a bar code recording a large amount of information is formed on external electrodes formed at both ends of an electronic component body. The present invention provides an electronic component characterized in that a display symbol consisting of symbols such as alphabets and numbers recording a large amount of information is formed on external electrodes formed at both ends of a component 2, an electronic component main body.

Enclosure - By forming information such as manufacturing history on the external electrode with a bar code or display symbol consisting of alphabets, numbers, etc., in addition to the manufacturer name, product name, or component characteristics stamped on the surface of the electronic component body, it is possible to display information such as loft number and It becomes possible to record a large amount of information regarding manufacturing history such as manufacturing date.

One embodiment of the present invention will be described with reference to a perspective view of a multilayer ceramic capacitor shown in FIG.

However, parts that are the same as those in the prior art are given the same reference numerals and their explanations will be omitted.

In the same figure, 20a is a display symbol formed on the external electrode 20. This is, for example, a bar code formed by pressing after applying a paste, drying, and before firing, and then firing. Information such as manufacturing history such as month and date or detailed product characteristics is displayed.

Note that the display symbol 20a consisting of this bar code can record even more information by using not only the external electrodes 20 on one side but also the external electrodes 20 on both sides.

In addition, when forming the external electrode 20, a material with a large amount of glass frit is used in the first step, the present invention is applied to the surface of the material, and the display symbol 20a is formed by pressing, and a material with a small amount of glass frit is further formed on it in the second step. It is better to apply the material and fire it. In this way, even if a failure occurs after the multilayer ceramic capacitor 3o is mounted, the external electrode material with a large amount of glass frit is less likely to melt during mounting.
Since the display symbol 20a based on the bar code remains, the display symbol 20a can be read by polishing, although the second external electrode layer is melted when investigating defects.

Furthermore, even in the case of one-time application, the barcode display symbol 20a can be read if a cream solder or the like having a low melting point is used during mounting.

Fig. 2 is a perspective view of a second embodiment of the present invention, and like Fig. 1, it is an example applied to a multilayer ceramic capacitor.

In this embodiment, alphabets are used on the external electrode 21 of the multilayer ceramic capacitor 31 in place of the barcode display symbol 20a of the first embodiment.

Since this embodiment is the same as the first embodiment except that a numerical display symbol 21-a is formed, the same parts will be given the same reference numerals and the explanation thereof will be omitted.

In this embodiment, as in the first embodiment, history such as lot number and manufacturing date can be recorded. In addition, by displaying the characteristics of the multilayer ceramic capacitor 31 in alphabets and numbers, it can replace the conventional display stamped on the element surface of the ceramic capacitor, and by viewing the display during mounting, mistakes in mounting different products can be reduced. be able to.

As explained above, according to the present invention, information such as manufacturing history such as loft number and date of manufacture, detailed product characteristics, etc. is displayed on the external electrode part using barcodes, alphabets, numbers, etc. This allows a large amount of information to be recorded. As a result, when an electronic component fails, it is possible to investigate the manufacturing history, etc., and the cause of the failure can be easily analyzed.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an electronic component that is a first embodiment of the present invention, and FIG. 2 is a perspective view of an electronic component that is a second embodiment of the present invention. FIG. 3 is a partially cutaway perspective view of a conventional electronic component. 1... Ceramic capacitor element (electronic component body), 20.21... External electrode, 20a, 21a... Display symbol, 30.31...
...Ceramic capacitor (electronic component).

Claims (2)

[Claims] (1) An electronic component characterized in that a display symbol consisting of a barcode recording a large amount of information is formed on external electrodes formed at both ends of the electronic component body. (2) An electronic component characterized in that a display symbol consisting of symbols such as alphabets and numbers recording a large amount of information is formed on external electrodes formed at both ends of the electronic component body.