JP2802992B2 - Network resistor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a network resistor having a common electrode at diagonal positions.

[0002]

2. Description of the Related Art As shown in FIG. 3, a conventional network resistor having a common electrode at a diagonal position has an internal electrode structure having a resistance portion in which the distance from each common electrode to the resistance portion is greatly different.

[0003]

In a network resistor having a common electrode at a diagonal position, the distance between the internal electrodes from each common electrode to the resistance portion is different. Therefore, when the resistance value of the resistance portion is low, the resistance of the internal electrode is low. Due to the influence of the resistance value, a difference in resistance value occurred between each common electrode and the electrode of the resistance portion.

The resistance value between the common electrode 1 and the electrode 2-a in FIG. 3 passes through the resistor 5-a in the network from the common electrode 1 via the dotted line 9 of the internal electrode 3, and passes through the electrode 2-a. Resistance value.

However, the resistance between the common electrode 1 'and the electrode 2-a in FIG. 3 passes through the resistor 5-a in the network from the common electrode 1' via the dotted line 10 of the internal electrode 3, and The resistance value reaches 2-a, and the dotted line 9 and the dotted line 10
Appears as a difference in conductor resistance of the internal electrode 3.

[0006]

In order to make the distance of the internal electrodes from each common electrode to the resistance portion the same, the internal electrodes shown in FIG. 2 are provided.

[0007]

As shown by the dotted line in FIG. 4, by making the distances between the common electrodes and the resistance portions the same, the resistance values of the internal electrodes from the respective common electrodes to the resistance portions become substantially the same, and the diagonal position In the low resistance of the network resistor having the common electrode, the resistance value between each common electrode and the same resistance portion electrode can be made equal.

[0008]

Embodiment 1 An embodiment of the present invention will be described with reference to the drawings.
In the figure, reference numerals 1 and 1 ′ are common electrodes. 2-a to 2-h
Is the electrode of the resistance part, 4 is the internal electrode, 5-a to 5-h
Is a resistor, 6 is laser trimming, 7 is a protective coat, 8
Is an alumina insulating substrate, 11 is a path showing a connection in the internal electrode from the common electrode to the electrode, and 12 is a path showing a connection in the internal electrode from the common electrode to the electrode different from 11.

The height, width and height are 6.4 mm, respectively.
Conductor printing was performed on alumina insulating substrates for 1 mm and 0.6 mm concave electrode chip network resistors. FIG. 1 shows a conventional conductor pattern, and FIG. 2 shows a conductor pattern of the present invention having internal electrodes for equalizing the distance from the common electrode to the resistance portion.

The resistance value between the common electrode 1 and the electrode 2-a in FIG. 4 passes through the resistor 5-a in the network from the common electrode 1 via the dotted line 11 of the internal electrode 3, and passes through the electrode 2-a. Resistance value.

The resistance between the common electrode 1 'and the electrode 2-a in FIG. 4 passes through the resistor 5-a in the network from the common electrode 1' via the dotted line 12 of the internal electrode 3, and passes through the electrode 2-a. a, and the lengths of the dotted lines 11 and 12 are equal in the distance from the common electrode 1 and the common electrode 1 'to the center point x of the internal electrode 4 and are equal to the distance from the center point x of the internal electrode 4 to the electrode 2 −
Since the path to a is common, the common electrode 1
The distance between −a and the electrode 2-a from the common electrode 1 ′ is equal, and no difference in conductor resistance appears.

After each conductor pattern printed on the alumina insulating substrate was baked, resistor printing was performed using a resistance paste having an area resistance of 10Ω. FIG. 3 shows an element obtained by printing a resistor on a conventional conductor pattern, and FIG. 4 shows an element obtained by printing a resistor on the conductor pattern of the present invention.

After each resistor was baked, one of the common electrodes was used as a common terminal, and all resistors were adjusted to 22Ω by laser trimming. FIG. 5 shows an element obtained by laser trimming a resistor printed on a conventional conductor pattern, and FIG. 6 shows an element obtained by laser trimming a resistor printed on a conductor pattern of the present invention.

Next, as shown in FIG. 7, each of the laser-trimmed elements was protectively coated with glass printing and baked.

[0015]

According to the chip network resistor manufactured by the conventional conductor pattern, the resistance value between the electrode of the resistance part adjacent to each common electrode and each common electrode was measured, and it was found that the resistance was 0.5Ω to 1Ω. A difference of 0.0Ω was produced. Chip network resistors made with conductor patterns according to the present invention ranged from 0.02Ω to 0.05Ω. In this way, the difference in resistance between the electrodes of the resistor section and the respective common electrodes can be made extremely small, so that a network resistor having a common electrode at a diagonal position has a network resistance with high resistance value accuracy even at a low resistance. The production of vessels became possible.

[Brief description of the drawings]

FIG. 1 is a top view of a conventional device after conductor printing in Example 1. FIG.

FIG. 2 is a top view of the element after conductor printing of the present invention in Example 1.

FIG. 3 is a top view of a device after a conventional resistor printing in Example 1.

FIG. 4 is a top view of an element after printing a resistor according to the present invention in Example 1.

FIG. 5 is a top view of a device after laser trimming according to the related art in Example 1.

FIG. 6 is a top view of the device after laser trimming according to the present invention in Example 1.

FIG. 7 is a top view of the device after a protective coat in Example 1.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1, 1 'Common electrode 2-a to 2-h Resistance part electrode 3 Conventional internal electrode 4 Internal electrode according to the present invention 5-a to 5-h Resistor 6 Laser trimming 7 Protective coat 8 Alumina insulating substrate 9 Common electrode 1 is a path indicating a connection from the electrode 2-a 10 is a path indicating a connection from the common electrode 1 'to the electrode 2-a 11 is a path indicating a connection from the common electrode 1 to the electrode 2-a 12 It is a path indicating the connection from the common electrode 1 'to the electrode 2-a. X The center point of the internal electrode 4

Claims (1)

(57) [Claims] In a network resistor having a common electrode formed at diagonal positions on an insulating substrate, the distance between each common electrode and the resistance section is made equal in internal electrodes from each common electrode to the resistance section. A network resistor comprising: