JPH0350616Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This idea is related to Chippuji Jumper.

(Prior Art) Chip jumpers are already well known, in which a conductive film is formed on the surface of an insulating substrate such as ceramic, and both ends of the conductive film are used as terminals. However, in the conventional configuration, a conductor film is provided only on one surface of the base.

Therefore, when it is necessary to provide two conductor films on one substrate, the two conductor films may come into contact with each other.
It has the disadvantage of being prone to electrical failures. In order to avoid this, it is necessary to leave a sufficient distance between the two conductor films. However, in order to provide sufficient spacing like this, the base must be made larger.
This will reduce the packaging density.

(Problem that the invention aims to solve) This invention enables the formation of two conductive films on the surface of the substrate without any restrictions on each other and without increasing the size of the substrate. The purpose is to

(Means for solving the problem) This idea provides electrically independent conductive films on both the front and back surfaces of an insulating substrate, and each end of each conductive film is used as a terminal. Features.

(Example) An example of this invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes an insulating base made of ceramic or other material, on whose front surface 2 a first conductor film 3 is provided, and also on its back surface 4 a second conductor film 5 is provided. 6 and 7 are both ends of the conductor film 3, and 8 and 9 are both ends of the conductor film 5, both of which are used as terminals.

In this case, as shown in the figure, conductor films 3 and 5 that become each terminal
If the end of is led out to the end surface of the base 1,
This is convenient when soldering it onto a board.
At this time, if the bent parts of both ends 6, 8 or 7, 9 are made to appear on one end face, when each bent part and the circuit conductor on the board are soldered, there is a risk that the solders will come into contact with each other. Therefore, in order to avoid contact with the solder, it is advisable to provide a recess 1A in the center of the end face.

FIG. 2 is a cross-sectional view taken along the center line of FIG. 1, and 10 and 11 are protective films that protect the conductor films 3 and 5. The protective films 10 and 11 are preferably insulating.

According to the above configuration, two conductor films are provided on one base 1. And each conductor film 3,
5 are provided independently from each other on the front and back surfaces of the base 1, so the base 1 does not need to be enlarged, and both conductor films can be formed into arbitrary shapes without being subject to any restrictions on their size. Can be formed to any size. Even if the conductor films are formed to have an arbitrary size as described above, since both conductor films are separated into the front and back surfaces of the base 1, accidents such as contacting each other can be reliably avoided.

It is advantageous if each of the conductor films 3 and 5 is formed to have a large area as shown in the figure, since the heat dissipation area becomes larger and the resistance value becomes smaller accordingly. Note that when the resistance value is adjusted by the film area, the conductor film may be formed to extend to the side surface of the base 1.

In the example shown in FIG. 1, the ends 6 and 7 are provided on one side edge of the base 1, and the ends 8 and 9 are provided on the opposite side edge, so both conductor films 3 and 5 are equivalently provided. become parallel to each other. On the other hand, if the ends 6 and 7 are provided on opposite side edges of the base 1, and the ends 8 and 9 are similarly provided on opposite side edges as shown in FIG. ,5
become equivalently located across each other.

Therefore, it is suitable to use this when, for example, circuits on a board are connected to each other by crossing each other. At this time, the base body comes to rest on the conductor constituting the circuit, but the protective film 10,
Since 11 is insulative, the conductor film is prevented from coming into direct contact with the conductor of the circuit.

(Effects of the invention) As detailed above, according to this invention, even when two conductor films are provided on one base, each conductor film is provided independently on both the front and back sides of the base. Therefore, each conductive film can be formed without increasing the size of the substrate and without any restrictions on its size, and even if formed to any size, both conductive films will not interfere with each other. This has the effect that accidents such as contact with each other can be reliably avoided.

[Brief explanation of drawings]

Figure 1 is a perspective view showing an embodiment of this invention;
This figure is a sectional view of the same, and FIG. 3 is a perspective view showing another embodiment of this invention. 1...Substrate, 2...Surface, 3, 5...Conductor film,
4...back side, 6-9...ends.

Claims (1)

[Scope of utility model registration request] A chip jumper comprising electrically independent conductor films for jumpers provided on at least both the front and back surfaces of an insulating base, and each end of each conductor film serving as a terminal.