JPH0249700Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to electronic components, and particularly to a display mechanism for displaying the manufacturing month, etc. of a compact solid electrolytic capacitor.

[Prior art]

In general, this kind of solid electrolytic capacitor is made by, for example, press-molding metal powder having a valve action into a prismatic shape and sintering it.A capacitor element is made by attaching a metal wire having a valve action as an anode lead in advance, and a plate is attached to the anode lead. At the same time, a second external lead member in the form of a plate is connected to the electrode lead-out layer of the capacitor element using a conductive adhesive, and the entire circumferential surface of the capacitor element is covered with a resin material. The lead-out ends of the first and second external lead members are bent along the lower surface of the resin material.

By the way, in a solid electrolytic capacitor, a first display symbol indicating the product type, characteristics, month of manufacture, manufacturing history, etc. is placed on the central part of the main surface (top surface) of the resin material, and a first display symbol is placed on the main surface on the side of the first external lead member. A band-shaped second display symbol for indicating polarity is stamped on each end, so the content of the solid electrolytic capacitor is determined by the first display symbol, and the second display symbol also indicates the content of the solid electrolytic capacitor. Accordingly, it is possible to easily recognize the polarity of the first and second external lead members.

[Problem that the invention attempts to solve]

However, in recent years, with the trend toward smaller, lighter, thinner and smaller solid electrolytic capacitors, there has been a demand for smaller solid electrolytic capacitors without exception. ing.

When solid electrolytic capacitors are miniaturized in this way, it is difficult to stamp all the display symbols on the main surface of the resin material. On the other hand, if the first display symbol is made extremely small, it is possible to imprint it, but it not only becomes difficult to read it, but also makes it difficult to imprint it clearly.

Therefore, in the past, only the most necessary items such as characteristics were stamped, and the manufacturing month, manufacturing history, etc. were not stamped.
If a defect occurs, it is impossible to determine the manufacturing history of the solid electrolytic capacitor and when it was manufactured, making it difficult to determine the exact cause of the defect. The problem is that it is difficult.

Therefore, it is an object of the present invention to provide an electronic component that can reliably form a desired display symbol even if the exterior form is miniaturized by a simple structure, and can also reliably display polarity.

[Means to solve the problem]

Therefore, in order to achieve the above-mentioned purpose, the present proposal:
A plurality of external lead members are led out from the component body, and the entire circumferential surface of the component body is covered with a resin material.
A second display symbol consisting of a bar code having a polarity display function is formed at the end of the main surface on the side of one external lead member.

[Effect]

According to this invention, since the second display symbol is formed at the end of the main surface on the side of one external lead member, it is possible to reliably display the polarity of the plurality of external lead members.

Furthermore, since the second display symbol is constituted by a bar code, desired display can be performed accurately by adding display functions such as manufacturing month and manufacturing history to the bar code.

〔Example〕

Next, an example of application of the present invention to a solid electrolytic capacitor will be explained with reference to FIGS. 1 and 2.

In the figure, 1 is a capacitor element (component body) made by press-molding metal powder with valve action into a prismatic shape and sintering it, and in the center of it is a metal wire with valve action as the anode lead 2. It is planted prior to pressure molding of metal powder. Note that this anode lead 2 can also be led out by welding to the circumferential surface of the capacitor element 1. Then, on the circumferential surface of the capacitor element 1, an oxide layer, a semiconductor layer,
An electrode lead layer 3 is formed through a graphite layer. On the other hand, for example, a plate-shaped first external lead member 4 is welded to the anode lead 2, and a plate-shaped second external lead member 5, for example, is welded to the electrode lead layer 3 of the capacitor element 1. Connected using conductive adhesive. The entire circumferential surface of the capacitor element 1 is made of a resin material 6.
The first external lead member 4 is coated with a mold, and a first display symbol 7 indicating the product type, characteristics, etc. is provided at the center of the main surface (upper surface) 6a.
At the end of the main surface on the side, a second display symbol 8 consisting of a bar code indicating the manufacturing month, manufacturing history, etc. is formed by stamping.

In this embodiment, the second display symbol 8 is composed of a bar code, so even if trouble occurs during use, the month of manufacture, manufacturing history, etc. can be clarified from the display contents of the bar code, and based on this, the cause can be determined. can be accurately investigated.

Further, even if the exterior form is made smaller, the desired display contents can be displayed, and the display contents can be automatically detected by converting the second display symbol into a bar code, so that identification at the time of mounting can be ensured.

Furthermore, since the second display symbol 8 is formed on the first external lead member 4 side, if the external lead member on the side where it is formed is used as an anode, the first and second external lead members The polarity of numbers 4 and 5 can be easily recognized.

It should be noted that the present invention is not limited to the above-mentioned embodiment in any way, and can be applied to, for example, electronic components other than solid electrolytic capacitors as well as other polarized components. In addition to resin molding, solid electrolytic capacitors can also be covered with immersion sheathing or powder sheathing.

[Effect of idea]

As described above, according to the present invention, since the second display symbol is constituted by a bar code, a desired display can be performed regardless of the miniaturization of the exterior form.

Furthermore, since the second display symbol is formed at the end of the main surface in association with a specific external lead member, the polarity of each external lead member can be reliably indicated.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a side sectional view of FIG. 1. In the figure, 1 is the component body (capacitor element),
4 and 5 are external lead members, 6 is a resin material, 6a is a main surface, 7 is a first display symbol, and 8 is a second display symbol.

Claims (1)

[Scope of utility model registration request] In a component body in which a plurality of external lead members are led out from the component body and the entire circumferential surface of the component body is covered with a resin material, a first display symbol is placed in the center of the main surface of the resin material, and one of the external lead members is An electronic component characterized in that a second display symbol consisting of a barcode having a polarity display function is formed on each end of the main surface on the member side.