Polymer thick film resistor, layout cell, and method

Details Polymer thick film resistor, layout cell, and method Polymer thick film resistor, layout cell, and method

2006-05-02

2006-05-02

Hoang, Tu (Department: 2832)

Electrical resistors

With base extending along resistance element

Resistance element and/or terminals printed or marked on base

C338S295000

Reexamination Certificate

active

07038571

ABSTRACT:
A printed circuit polymer thick film (PTF) resistor includes tolerance control material that substantially surrounds the resistor body and significantly improves the linearity of resistance vs. resistor length, and significantly reduces resistor-to-resistor and board-to-board fabrication variances. In one embodiment, the tolerance control material is the same metallic material as the printed circuit conductors, and is formed in two finger patterns on each side of the resistor body, each finger pattern connected to one terminal pad of the resistor. A layout cell is used for fabricating the PTF resistor. A method is used for fabricating the PTF resistor.

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