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Universal trimming of polymer thick film resistors

Busi Rambabu (Instrument Technology Department, Andhra University College of Engineering (A), Visakhapatnam, INDIA)
Y. Srinivasa Rao (Instrument Technology Department, Andhra University College of Engineering (A), Visakhapatnam, INDIA)

Microelectronics International

ISSN: 1356-5362

Article publication date: 5 May 2015

146

Abstract

Purpose

The purpose of this paper is to study high-voltage interactions in polymer thick-film resistors, namely, polyvinyl chloride (PVC)-graphite thick-film resistors, and their applications in universal trimming of these resistors.

Design/methodology/approach

The authors applied high voltages in the form of pulses and impulses of various pulse durations and with different amplitudes to polymer thick-film resistors and observed the variation of resistance of these resistors with high voltages.

Findings

The paper finds that high voltages can be used for trimming of polymer thick-film resistors in both directions, i.e. upwards and downwards.

Research limitations/implications

The research implication of this paper is that polymer thick-film resistors can be trimmed downwards or upwards practically using this method.

Practical implications

The practical implications of this paper is that one can trim the polymer thick-film resistors, namely, PVC–graphite thick-film resistors, in both directions, i.e. upwards and downwards, by using this method.

Originality/value

The value of the paper is in showing that high voltages can be used to trim downwards and also upwards in the case of polymer thick-film resistors. This type of trimming is called universal trimming, developed first time for polymer thick-film resistors.

Keywords

Acknowledgements

The authors would like to express their deep sense of gratitude to Kamalakar, Director, and Lakshmi Prasad, Group Director of Laboratory For Optics and Electronics Systems, Bangalore, India, for permitting us to work in their laboratories.

Citation

Rambabu, B. and Rao, Y.S. (2015), "Universal trimming of polymer thick film resistors", Microelectronics International, Vol. 32 No. 2, pp. 45-51. https://doi.org/10.1108/MI-09-2014-0038

Publisher

:

Emerald Group Publishing Limited

Copyright © 2015, Emerald Group Publishing Limited

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