JPH07297083A - Polarized electronic parts - Google Patents

Abstract

PURPOSE:To obtain polarized electronic parts where detailed manufacturing timing information can be obtained from an actual product without removal even after packaging is completed if a failure should occur, causes can be researched and influence range can be investigated rapidly, and proper measures can be taken. CONSTITUTION:This parts are provided with outer lead terminals 4 and 5. Then, in a resin encapsulated chip electronic parts which are subjected to resin encapsulation 6 and are sealed, a non-display part 12 is provided at one portion of a polarity display part 13 provided on the upper surface of the resin encapsulation 6 and a display symbol 14 other than the polarity display is provided at the non-display part 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polar electronic component, and more particularly to a symbol display on the surface of a resin-coated chip type electronic component.

[0002]

2. Description of the Related Art A conventional technique will be described by taking a solid electrolytic capacitor as an example of a resin-coated chip type electronic component. As shown in FIG. 3, in a resin-coated chip type solid electrolytic capacitor, a metal powder having a valve action is embedded in an anode lead 2 made of a metal wire having the same valve action at the center, pressure-molded into a prismatic shape, and baked. An electrode lead layer 3 is formed on the peripheral surface of the connected capacitor element 1 with an oxide layer, a semiconductor layer, and a graphite layer interposed therebetween. Further, the plate-shaped first external lead 4 is welded to the anode lead 2, and the plate-shaped second external lead 5 is connected to the electrode lead layer 3 by using a conductive adhesive such as silver paste. There is.

The entire outer peripheral surface of the capacitor element 1 is mold-coated with an exterior resin material 6. As shown in FIG. 4A, a display for displaying the type, characteristics, etc. is displayed at the center of the top surface of the exterior resin 6. A symbol 7 is formed on the end portion of the upper surface on the side of the first external lead 4 with a band-shaped display symbol 8 for indicating the polarity by marking. However, in recent years, there has been a strong tendency toward lightness, thinness, shortness, and miniaturization. In particular, miniaturization of such chip-type electronic parts is required, and the information that can be displayed on the upper surface of the exterior resin 6 by a seal is limited. Only the items most necessary for use were displayed, and information such as manufacturing history was omitted. Therefore, if a defect or accident occurs,
It was not possible to clarify what kind of manufacturing history the electronic component has, and it was difficult to accurately determine the cause of the defect. Therefore, in order to increase the display information amount and display the manufacturing history, as shown in FIG. 4B, the manufacturing lot display 10 is provided in the concave portion 9 of the knock pin mark formed at the time of molding on the bottom surface of the exterior resin 6. is there. Further, Japanese Utility Model Laid-Open No. 60-183424 discloses a polar electronic component having a strip-shaped manufacturing time display symbol so that the strip-shaped polarity display symbol is substantially L-shaped on the upper surface side. Japanese Utility Model Laid-Open No. 3-71602 discloses a chip-type electronic component in which a manufacturing time is displayed on the upper surface of an exterior resin by a combination of dots.

[0004]

However, if the manufacturing lot symbol 10 is to be imprinted on the recess 9 of the knock pin mark on the bottom surface of the exterior resin 6 as described above, it is imprinted on both sides, so the number of man-hours required for imprinting is doubled. Since many types of stamps are required and at most one character can be stamped, the manufacturing time cannot be displayed in detail. In addition, there is a problem that after mounting, it cannot be confirmed unless it is removed. In addition, the method of displaying the manufacturing time with the L-shaped band-shaped manufacturing time display symbol or the combination of dots is a cryptographic display, and therefore it is necessary to know the display rule to decipher, and the parts user must perform the manufacturing after mounting. There is a problem in that the history cannot be directly read, or the display symbol cannot be made small for accurate reading, so that the number of types of display patterns cannot be increased.

[0005]

In a polar electronic component having a polarity display printed portion at the end of the exterior resin upper surface, a non-display portion is provided in a part of the polarity display printed portion, and the non-display portion is provided with a polarity display portion. It is characterized by printing the display symbols other than.
Further, the non-display portion is almost half of the polarity display printed portion, or, or the non-display portion is a non-display portion provided in the polarity display printed portion, further, the display symbol It is characterized by a manufacturing month display symbol.

[0006]

According to the present invention, for example, a symbol indicating the manufacturing time can be directly displayed in alphanumeric characters on the printed portion of the polarity display on the upper surface of the exterior resin, instead of being displayed in a coded manner. But it can be read accurately.
Further, by making the non-display portion almost half of the printed portion of the polarity display, the visibility can be improved in both the polarity display and the manufacturing time display. Further, if the manufacturing time symbol is displayed on the non-display portion provided on the polarity display printed portion, the visibility can be further improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a resin-covered chip type electronic component according to the present invention will be described below with reference to the drawings. The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. The feature of the present invention resides in the method of printing the display symbol on the upper surface of the exterior resin.
As shown in FIG. 3, a display symbol 7 indicating the type, characteristics, etc. is provided on the central portion of the upper surface of the outer resin 6 of the resin outer chip type solid electrolytic capacitor in almost half of the upper end portion on the first external lead 4 side. In the same manner, a band-shaped display symbol 10 for indicating the polarity and a display symbol 11 for indicating the manufacturing time are similarly formed on the remaining half of the upper surface end portion on the first external lead 4 side by marking.

Further, in another embodiment of the present invention, as shown in FIG. 2, a non-display portion 12 is provided at the upper end portion on the first external lead 4 side, and a strip-shaped display symbol for displaying the polarity. Thirteen
However, the non-displayed portions 12 are each provided with a display symbol 14 for indicating the manufacturing time by marking. According to this embodiment, since the display symbol 13 for displaying the polarity is provided on the entire upper end portion of the first external lead side, the visibility can be further improved, and the symbol 14 for indicating the manufacturing time is also 2
The display capacity can be increased to 3 digits, and the display capacity can be increased, for example, by displaying the manufacturing month and the manufacturing date. In particular, the display symbol 10 for indicating the manufacturing time is formed by a single-digit display of symbols for displaying the manufacturing month, so-called January to December, as A to M (excluding I). In this embodiment, since the manufacturing time is displayed on the display symbol 10, even if a trouble occurs during use, it is possible to clarify what kind of manufacturing history it has while being mounted on a printed circuit board or the like. The investigation can be done accurately. The example in which the manufacturing month symbol is displayed on the resin exterior chip type solid electrolytic capacitor has been described above, but the present invention relates to a polar electronic component having a polarity display printed portion on the upper surface of the exterior resin, and a part of the polarity display printed portion. It can be applied to the non-display part provided with a symbol other than the polarity display printed.

[0009]

As described above, the present invention has the display symbol on the upper surface of the resin exterior, which indicates the manufacturing date and the polarity of the product name information. Since information can be obtained in detail without being removed even after mounting, it is possible to quickly investigate the cause and the spread range and take appropriate measures. Further, since the marking on both sides is unnecessary, the man-hour required for marking can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a solid electrolytic capacitor showing an embodiment of the present invention.

FIG. 2 is a plan view showing another embodiment of the present invention.

FIG. 3 is a cross-sectional view of a resin-coated chip type solid electrolytic capacitor.

FIG. 4A is a plan view of a conventional solid electrolytic capacitor. (B) The back view of the conventional solid electrolytic capacitor.

[Explanation of symbols]

 4 External anode lead member 5 External cathode lead member 7 Product type / characteristic display symbol 10, 13 Anode display symbol 12 Non-displayed portion 11, 14 Manufacturing month display symbol

Claims (4)

[Claims] 1. A polar electronic component having a polarity display printed portion at the end of the upper surface of the exterior resin, wherein a non-display portion is provided in a part of the polarity display printed portion, and a display symbol other than the polarity display is provided on the non-display portion. Polarized electronic parts characterized by displaying. 2. The polar electronic component according to claim 1, wherein the non-display portion is approximately half the polarity display printed portion. 3. The polar electronic component according to claim 1, wherein the non-display portion is a non-display portion provided in a polar display printing portion. 4. The polar electronic component according to claim 1, wherein the display symbol is a manufacturing month display symbol.