Chip resistor and method for making the same

Details Chip resistor and method for making the same Chip resistor and method for making the same

2009-04-23

2011-10-11

Harvey, James (Department: 2833)

Electrical resistors

With base extending along resistance element

Resistance element coated on base

C338S313000, C338S332000

Reexamination Certificate

active

08035476

ABSTRACT:
The present invention relates to a chip resistor and method for making the same. The chip resistor includes a substrate, a pair of bottom electrodes, a resistive film, a pair of main upper electrodes, a first protective coat, a pair of barrier layers, a second protective coat, a pair of side electrodes and at least one plated layer. The first protective coat is disposed over the resistive film, and covers part of the main upper electrodes. The barrier layers are disposed on the main upper electrodes, and cover part of the first protective coat. The second protective coat is disposed on the first protective coat, and covers part of the barrier layers. The plated layers cover the barrier layers, the bottom electrodes and the side electrodes. As a result, the chip resistor features high corrosion resistance.

REFERENCES:
patent: 6356184 (2002-03-01), Doi et al.
patent: 2010/0201477 (2010-08-01), Yang et al.
patent: 2011/0089025 (2011-04-01), Yang et al.
Chinese Office Action dated May 6, 2011 for 200910127171.X, which is a corresponding Chinese application, which was received on May 12, 2011.

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