JPH0369106A - Polar electronic part and carrier tape - Google Patents

Abstract

PURPOSE:To obtain a polar electronic part, whose polarity can be known not only from the polarity indication on the imprinted surface side but also from the shape on the electrode terminal side, and a carrier tape, for which all can be inserted in the same direction and nonconformity due to inverse insertion can be prevented, by making the shape of the bottom surface in the anode side and in the cathode side asymmetric, etc. CONSTITUTION:In a polar electronic part, wherein anode and cathode terminals 4 is led out from an electronic part element and it is covered with insulating resin 3 except a part of the anode and cathode terminals 4, the shape of the bottom surface in the anode side and in the cathode side is made asymmetric. Further, in a carrier tape having equally spaced box-shaped product inserting parts 2 with the same shape, the bottom surface shape of the product inserting part 2 is made aymmetric. For example, at the surface in the molded electrode terminal side of the insulating resin 3 in a resin molded chip type tantalum capacitor, a recess part 6 is formed by obliquely cutting the insulating resin part on both sides of the electrode terminal 4 in the anode side, and the product inserting part 2 of the carrier tape has a structure with a projecting part 5 to fit the recess 6 of the resin molded chip type tantalum capacitor.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to polar electronic components and carrier tapes,
In particular, the present invention relates to a polarized electronic component having a reverse insertion prevention structure and a carrier tape for housing the polarized electronic component.

[Conventional technology]

As an example of this type of conventional polarized electronic component, a resin molded chip tantalum capacitor will be described with reference to the drawings. Figure 7 is a cross-sectional view showing the state of a resin molded chip tantalum capacitor and carrier tape during carrier taping in the prior art, Figure 8 is a perspective view of an example of a resin molded chip tantalum capacitor in the prior art, and Figure 9 is the prior art. FIG. 2 is a perspective view of an example of a product insertion portion of a carrier tape according to FIG.

As shown in FIG. 7, a resin-molded chip tantalum capacitor is inserted into a carrier tape product insertion portion 2 having a symmetrical, substantially rectangular cross section with the positive and cathode terminals 4 facing down. In addition, as shown in FIG. 8, the resin molded chip tantalum capacitor has a symmetrical shape in which the positive and cathode terminals 4 are taken out from both end faces of the insulating resin 3 in the shape of a substantially rectangular parallelepiped and molded into an L-shape. As shown in FIG. 9, the carrier tape product insertion portion 2 also has a substantially rectangular parallelepiped shape that matches the resin molded chip tantalum capacitor.

[Problem to be solved by the invention]

In the conventional carrier taping of the resin molded tantalum capacitor described above, the exterior resin 3 of the resin molded chip tantalum capacitor and the carrier tape product insertion part 2 are
Since it has a symmetrical shape, the direction of the resin molded chip tantalum capacitor is 18 when carrier taping.
Even if the carrier tape product has changed, it is inserted normally into the carrier tape product insertion section 2. However, resin molded chip tantalum capacitors are polar capacitors with an anode and a cathode, so if they are taped in the opposite direction and mounted on a printed circuit board, reliability will drop significantly and short circuits will occur. This will lead to.

The purpose of the present invention is not only to display the polarity on the stamping side, but also to
We provide polar electronic components whose polarity can be determined from the shape of the electrode terminal side, and carrier tape for these polar electronic components that can be inserted in the same direction to prevent problems caused by reverse insertion. It is to be.

[Means to solve the problem]

In the polar electronic component of the invention, positive and negative terminals are derived from an electronic component element, and a part of the positive and negative terminals are covered with an insulating resin.
The structure is characterized by asymmetrical bottom shapes on the anode and cathode sides.

Further, a carrier tape according to a second aspect of the present invention is characterized in that, in a carrier tape having box-shaped product insertion portions having the same shape at regular intervals, the bottom surface shape of the product insertion portions is asymmetrical. .

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIG. 1 is a cross-sectional view showing the resin molded chip tantalum capacitor during carrier taping according to the present invention and the state of the carrier tape. FIG. 2 is a perspective view of the resin molded chip tantalum capacitor according to the present invention. It is a perspective view of a carrier tape product insertion part. As shown in FIGS. 1 and 2, on the surface of the insulating resin 3 of the resin molded chip tantalum capacitor on the electrode terminal molding side, a recess 6 is provided by diagonally cutting the insulating resin portion on both sides of the electrode terminal 4 on the anode side. Further, as shown in FIGS. 1 and 3, the carrier tape product insertion portion 2 has a structure having a convex portion 5 that matches the concave portion 6 of the resin molded chip tantalum capacitor. In this carrier taping using a resin molded chip tantalum capacitor and a carrier tape, when the resin molded chip tantalum capacitor is inserted normally as shown in FIG. If the resin-molded chip tantalum capacitor is inserted into the carrier tape, the resin-molded chip tantalum capacitor will hit the carrier tape convex portion 5 and cannot be inserted.

FIG. 4 is a sectional view showing the state of a resin molded chip tantalum capacitor and carrier tape during carrier taping according to another embodiment of the present invention, and FIG. 5 is a perspective view of a resin molded chip tantalum capacitor according to another embodiment of the present invention. FIG. 6 is a perspective view of a carrier tape product insertion section according to another embodiment of the present invention.

This embodiment has the same function as the first embodiment in that the electrode terminal 4 of the anode is bifurcated and a resin molded chip tantalum capacitor recess 6 is provided between the electrode terminals 4.

In this embodiment, since the electrode terminal 4 of the anode is bifurcated, there is an advantage over the first embodiment that stability during mounting on a printed circuit board is improved.

〔Effect of the invention〕

As explained above, the present invention makes the shape of the bottom surface of the anode terminal side and the cathode terminal side of the polar electronic component asymmetrical, and also makes the shape of the bottom surface of the carrier tape product insertion part asymmetrical, thereby eliminating these characteristics. In carrier taping using polar electronic components and carrier tape, it is possible to insert the resin molded chip tantalum capacitor normally in the direction in which the shape of the resin molded chip tantalum capacitor matches the shape of the carrier tape, but if the resin molded chip tantalum capacitor is inserted in the opposite direction, the resin molded chip tantalum capacitor Capacitors cannot be inserted.

This makes it possible to insert all the polar electronic components in the same direction when carrier taping the polar electronic components, and it is possible to prevent problems caused by reverse insertion.

In addition, by making the shapes of the anode and cathode sides asymmetrical as in the first and second embodiments, it is possible to improve not only the polarity display on the conventional printing surface side but also the shape of the electrode terminal side. Polarity can be determined.

[Brief explanation of drawings]

FIGS. 1, 2, and 3 are a cross-sectional view, a perspective view of the resin-molded chip tantalum capacitor, and a carrier tape showing the states of the resin-molded chip tantalum capacitor and the carrier tape during carrier taping according to an embodiment of the present invention, respectively. A perspective view of the tape product insertion part, and FIGS. 4, 5, and 6 are cross-sectional views showing the states of the resin molded chip tantalum capacitor and the carrier tape during carrier taping according to other embodiments of the present invention, respectively. A perspective view of a chip tantalum capacitor and a perspective view of a carrier tape product insertion part; FIGS. 7, 8, and 9 are cross-sectional views showing the states of a resin molded chip tantalum capacitor and a carrier tape during conventional carrier taping, respectively; FIG. 2 is a perspective view of a resin molded chip tantalum capacitor and a perspective view of a carrier tape product insertion part. DESCRIPTION OF SYMBOLS 1...Taping feed hole, 2...Carrier tape product insertion part, 3...Insulating resin, 4...Positive/cathode electrode terminal, 5...Carrier tape convex part, 6...Resin Molded chip tantalum capacitor convex part, 7... Anode side polarity display.

Claims (2)

[Claims] (1) In a polarized electronic component in which positive and negative terminals are derived from an electronic component element and the positive and negative terminals are covered with insulating resin except for a part of the positive and negative terminals, the shapes of the bottom surfaces of the anode terminal side and the cathode terminal side are asymmetrical. A polar electronic component characterized by: (2) A carrier tape having box-shaped product insertion portions of the same shape at regular intervals, characterized in that the bottom shape of the product insertion portions is asymmetrical.