JPH0612721B2 - Substrate for chip resistor - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substrate for a chip resistor generally used in electronic circuits.

(Prior Art) A conventional chip resistor substrate will be described with reference to FIGS. 4 and 5.

In FIG. 4, a chip resistor substrate is a pair of opposed and common sections that are common to adjacent sections via the horizontal groove 2 on the surfaces of the individual sections of the insulating substrate 3 defined by the vertical groove 1 and the horizontal groove 2. Electrodes 4 and 5 are formed, and the low antibody 6 is provided in contact with the pair of electrodes 4 and 5.

FIG. 5 is an enlarged plan view of a part of FIG. 4, in which the probe 7 is brought into contact with the electrodes 4 and 5 of each section to measure the resistance.

(Problems to be Solved by the Invention) In such a conventional configuration, the area of the electrodes 4 and 5 with which the tip portion of the probe 7 contacts is small, and in order to perform four-terminal measurement, the shape of the probe 7 is processed. Difficult to do,
In addition, the strength is also a drawback, and the two-terminal measurement was unavoidably adopted. However, in the two-terminal measurement, there is a problem that the contact resistance and the line resistance cannot be removed and the true value cannot be obtained, which is particularly remarkable in the case of low resistance.

In addition, there is a strong demand from the user to improve the accuracy in the entire resistance value range, which is the background to the above-mentioned problem.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide a substrate for a chip resistor capable of performing 4-terminal measurement and highly accurate measurement of a resistance value.

(Means for Solving Problems) In order to solve the above problems, according to the present invention, one of electrodes facing each other has an electrode in a partition adjacent to each other via a vertical groove, and the other has electrodes in opposite directions. The low antibody that is in common with the electrodes of the adjacent sections via the vertical groove and is in contact with such a pair of electrodes is provided.

(Operation) With the above configuration, the electrode area for one resistor can be made slightly more than twice that of the conventional one, and 4-terminal measurement can be performed, and the resistance value can be measured with high accuracy.

(Embodiment) An embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a plan view of a chip resistor substrate according to the present invention.
The chip resistor substrate is provided with vertical grooves 1 on the surfaces of the individual partitions of the insulating substrate 3 partitioned by the vertical grooves 1 and the horizontal grooves 2, respectively.
A pair of electrodes 8 and 9 facing each other in common with the adjacent compartments in the opposite direction via is formed, and the low antibody 6 is provided so as to contact the pair of electrodes 8 and 9.

FIG. 2 is an enlarged plan view of a part of FIG. 1, in which electrodes 8 and 9 facing each other are common to adjacent sections in opposite directions via the longitudinal grooves 1 on both sides forming the section. Has become.

FIG. 3 shows a specific example of measuring the resistance of a resistor with four terminals. When measuring the resistance value of the low antibody 6a, the probes in contact with the adjacent sections and the common electrodes 8a and 9a, respectively. 7 measurement terminals 7a and 7b, and 7c and 7d.
The probe 7 is the same as the conventional one.

(Effect of the Invention) According to the present invention, since the area of the electrode is large, four-terminal measurement is possible, and the measurement accuracy of the resistance value is improved. In particular,
There is a significant effect in improving the measurement accuracy in the low resistance region, and there is a significant effect in satisfying the user's request and improving the reliability of the product.

[Brief description of drawings]

FIG. 1 is a plan view of a chip resistor substrate according to the present invention, FIG. 2 is a partially enlarged plan view of FIG. 1, and FIG. 3 is an electrode and a probe terminal for measuring four terminals of the chip resistor substrate of the present invention. FIG. 4 is a plan view showing the positional relationship of FIG. 4, FIG. 4 is a plan view of a conventional chip resistor substrate, and FIG. 5 is a partially enlarged view of FIG.
It is a top view showing the physical relationship of an electrode and a probe. 1 ... Vertical groove, 2 ... Horizontal groove, 3 ... Insulating substrate, 4, 5,
8,8a, 9,9a ... electrode, 6,6a ... low antibody, 7 ... probe, 7a, 7b, 7c, 7d ... measurement terminals.

Claims (1)

[Claims] 1. A chip resistor substrate, in which electrodes facing each other are formed on individual partitions defined by vertical grooves and lateral grooves for separation on an insulating substrate, and a low antibody is provided in contact with the electrodes. The electrode is a common electrode with the adjacent section through the vertical groove, the other electrode is the common electrode with the adjacent section through the vertical groove in the opposite direction, and they are independent with the horizontal groove in between. A substrate for a chip resistor.