JPS61158123A - Square chip type electronic component - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a square chip-shaped electronic component, and in particular to a square chip-shaped electronic component with an improved external electrode shape so as to enable multi-mounting using a pipe feeding method. Regarding electronic parts.

[Conventional technology]

For example, chip-shaped electronic components such as capacitors, resistors, and inductors are available in prismatic and cylindrical shapes depending on the type and use.

FIG. 4 is a perspective view of a conventional rectangular chip-shaped electronic component (multilayer capacitor), FIG. 5 is a schematic sectional view thereof, and FIG. 6 is a front view of its external electrode. This conventional square chip-shaped electronic component 2 usually has a thickness To and a width WllCT6.
<We) External electrodes 22a and 22b are provided at both ends of a prismatic chip body 21, respectively.

Therefore, the length of the finished square chip-shaped electronic component 2,
The dimensions of width W and thickness T are usually different from each other.

FIG. 7 is a perspective view of a cylindrical chip-shaped electronic component (capacitor), and FIG. 8 is a perspective view showing the chip body. The cylindrical chip-shaped electronic component 4 has cap-shaped terminals 42a, for example, at both ends of the chip body 41 as shown in FIG.
42b, respectively.

[Problem that the invention seeks to solve]

Considering the case where the prismatic chip-shaped electronic component 2 or the cylindrical chip-shaped electronic component 4 as described above is automatically attached to a printed circuit board, etc., the cylindrical chip-shaped electronic component 4 is connected to the terminal 42a.
, 42b have a substantially circular shape when viewed from the front and have no directionality, so multi-mounting using a pipe feeding method is possible. Simply put, the pipe feeding method is a method in which a large number of chip-shaped electronic components are continuously taken out one by one from a parts feeder and fed one by one to a mounting machine through a pipe. It is said to be a typical supply form.

On the other hand, as mentioned above, the square chip-shaped electronic component 2 usually has the dimensions of length L, width W, and thickness T, and in particular, the width W and thickness T are different, giving rise to directionality. Therefore, it was considered difficult to adopt the pipe feeding method. Therefore, when automatically mounting the square chip-shaped electronic component 2,
It was necessary to adopt a one-by-one method using a taping method or a parts feeder method, or a multi-mount method using a magazine method. However, the taping method has the disadvantage that multiple mounting heads are required for multi-mounting, which increases the machine cost, and the magazine method requires a special magazine (usually packed with 200 pieces). , and it has to be replaced frequently, which has the disadvantage of poor setup performance.

Therefore, an object of the present invention is to provide a rectangular chip-shaped electronic component that can be multi-mounted using a pipe feeding method.

[Means for solving problems]

In the rectangular chip-shaped electronic component of the present invention, the external electrodes provided at both ends of the chip body have a substantially circular shape when viewed from the front.

[Effect]

In the rectangular chip-shaped electronic component of the present invention, since the external electrode has a substantially circular shape when viewed from the front, there is no directionality. Therefore, the rectangular chip-shaped electronic component of the present invention can be multi-mounted using the pipe feeding method.

〔Example〕

FIG. 1 is a schematic sectional view of a square chip-shaped electronic component according to an embodiment of the present invention, and FIG. 2 is a front view of its external electrode. This square chip-shaped electronic component 6 is, for example,
The external electrodes 62a and 62b provided at both ends of the chip body 61 are approximately spherical, and their shape when viewed from the front is approximately circular. However, the external electrodes 62a, 62
The shape of b viewed from the front is not limited to that shown in FIG. 2, and may be a substantially square shape with some of its corners rounded, as shown in FIG. 3.

As described above, in this square chip-shaped electronic component 6,
Since the external electrodes 62a and 62b have a substantially circular shape when viewed from the front, there is no directionality in the thickness direction and the width direction, and multi-mounting using a pipe feeding method is possible. As a result, it becomes compatible with cylindrical chip-shaped electronic components and can be replaced with them.

Also, the thickness To and width W0 of the chip body 61 are To<
Although Wo may be used, if both are made approximately equal (that is, T0 = W) as shown in FIGS. 1 and 2, and the shape of the chip body 61 is approximately a regular prism, the external It becomes easier to form the electrodes 62a and 62b at both ends thereof.

Furthermore, by doing so, the directionality of the chip body 61 itself is eliminated, which is convenient when mounting it on a printed circuit board, etc.
At the same time, it is possible to increase the volume while maintaining a small size, and it is also possible to increase the power capacity.

Note that the external electrodes 62a and 62b as described above are, for example,
It can be formed by painting and baking silver paint on both ends of the chip body 61, but is not limited to this, and may be formed by any method such as plating or vapor deposition. may be applied to give the desired shape.

Furthermore, the external electrodes 62a and 62b may be formed in a single layer or in multiple layers, as long as they can ultimately achieve the object of the present invention.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to perform multi-mounting using the pipe feeding method even though the electronic component is a rectangular chip-shaped electronic component. Furthermore, as a result, it becomes compatible with cylindrical chip-shaped electronic components and can be replaced with them.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of a square chip-shaped electronic component according to an embodiment of the present invention, and FIG. 2 is a front view of its external electrode. FIG. 3 is a front view showing another example of the external electrode of the square chip-shaped electronic component of the present invention. FIG. 4 is a perspective view of a conventional square chip-shaped electronic component, FIG. 5 is a schematic sectional view thereof, and FIG. 6 is a front view of its external electrode. FIG. 7 is a perspective view of a cylindrical chip-shaped electronic component, and FIG. 8 is a perspective view showing the chip body.

Claims (2)

[Claims] (1) A square chip-shaped electronic component characterized in that external electrodes provided at both ends of a chip body have a substantially circular shape when viewed from the front. (2) A prismatic chip-shaped electronic component according to claim 1, wherein the chip body has a substantially regular prism shape.