Invention Application
WO2004109719A3 POLYMER THICK FILM RESISTOR, LAYOUT CELL, AND METHOD 审中-公开
聚合物厚膜电阻,布局单元和方法

POLYMER THICK FILM RESISTOR, LAYOUT CELL, AND METHOD
Abstract:
A printed circuit polymer thick film (PTF) resistor (410, 420) includes tolerance control material (425, 426, 440) that substantially surrounds the resistor body (423) 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 (420), the tolerance control material is the same metallic material as the printed circuit conductors (430), and is formed in two finger patterns on each side of the resistor body, each finger pattern connected to one terminal pad (435) of the resistor. A layout cell (700) is used for fabricating the PTF resistor. A method is used for fabricating the PTF resistor.
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