Journal of Materials Science

, Volume 22, Issue 4, pp 1413–1418 | Cite as

Trimming studies on polymer thick-film resistors

  • K. S. R. C. Murthy
  • M. Satyam


PVC-graphite polymer thick-film resistors were trimmed by a conventional air abrasive technique and the post-trim drift in resistance with time was found to be negative. The net decrease in resistance of trimmed resistors in a given time was found to be a function of resistor composition, cutting speed and temperature. Detailed studies showed this decrease to be due to a decrease in cut width with time. Two new methods, namely bombardment trimming and radiation trimming, were also tried for adjusting the resistance of these resistors and the results were compared with those obtained from abrasive trimming studies.


Radiation Polymer Resistor Composition Abrasive Technique 
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  1. 1.
    C. A. Harper (ed.), “Handbook on Thick Film Hybrid Microelectronics” Baltimore, Maryland (McGraw-Hill, New York, 1974) p. 6–42.Google Scholar
  2. 2.
    K. R. Dube,Amer. Ceram. Soc. Bull. 54 (1975) 528.Google Scholar
  3. 3.
    K. R. Dube, A. Z. Miller, A. Howe andB. Antoni,Solid State Technol. 21 (1978), 55.Google Scholar
  4. 4.
    R. C. Headley, M. J. Popowitch andF. J. Anders, in Proceedings of 23rd IEEE Electronic Component Conference, Washington, D.C., May, 1973, edited by the IEEE Committee, p. 47.Google Scholar
  5. 5.
    J. S. Shah andL. Berrin,IEEE Trans. on Components, Hybrids and Manufacturing Technology,CHMT 1 (1978) p. 130.Google Scholar
  6. 6.
    U. V. Rao andF. E. Buzan, in Proceedings of 23rd Electronic Component Conference, Washington, D.C., May, 1973, edited by the IEEE Committee, p. 182.Google Scholar
  7. 7.
    K. S. R. C. Murthy, K. Ramkumar andM. Satyam,J. Mater. Sci. Lett. 3 (1984) 813.Google Scholar
  8. 8.
    K. S. R. C. Murthy andM. Satyam,ibid. 4 (1985) 1371.Google Scholar
  9. 9.
    C. A. Deckert, US Patent No. 4,131,698, December 26th, 1978.Google Scholar

Copyright information

© Chapman and Hall Ltd 1987

Authors and Affiliations

  • K. S. R. C. Murthy
    • 1
  • M. Satyam
    • 2
  1. 1.Hybrid Microelectronics LaboratoryIndian Telephone IndustriesDoorvani Nagar, BangaloreIndia
  2. 2.Department of Electrical Communication EngineeringIndian Institute of ScienceBangaloreIndia

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