Physics of Wave Processes and Radio SystemsPhysics of Wave Processes and Radio Systems1810-31892782-294XPovolzhskiy State University of Telecommunications and Informatics981410.18469/1810-3189.2021.24.3.80-91Research ArticleRefinement of the method for selecting the width of the conductor of printed circuit boards on a metal base, working in the absence of convectionKostinAleksey V.<p>Candidate of Technical Sciences, Chief of the Department of JSC «Space and Rocket Center «Progress»</p>electrodynamics27@yandex.ruhttps://orcid.org/0000-0002-3395-8683Samara National Research University18112021243809118112021Copyright © 2021, Kostin A.2021<p>The article proposes a refined method for calculating the width of the conductors of printed circuit boards on a metal base for the onboard devices of spacecraft, depending on the current flowing. The constructed refined mathematical model of the process of conductive heat exchange between the conductors and the metal base is described. The results of calculations of various, most common, locations of layers of printed circuit boards are presented. An analysis was carried out and a refined methodology was developed based on the results obtained. It allows you to easily (without complicate calculations) calculate the necessary values of the width of conductors. This technique is based on graphical methods, but allows you to perform technical calculations with sufficient accuracy. Accuracy is achieved by using special formulas that simplify the determination of the value of a physical quantity on a logarithmic scale. The disadvantages of the proposed method are indicated.</p>spacecraftprinted circuit boardmetal basewidth of the printed conductormethod for calculatinggraphical methodкосмический аппаратпечатная платаметаллическое основаниеширина печатного проводникаметодика расчетаграфический метод[Brooks D., Adam J. Trace Current and Temperatures Revisited. UltraCAD Design. URL: https://www.ultracad.com/articles/pcbtempr.pdf][Pirogova E.V. PCB Design and Technology. Moscow: Forum – Infra-M, 2005, 250 p. (In Russ.)][Beljanin L.N. Design of Printed Circuit Assembly and Printed Circuit Board. Reliability Calculation. Tomsk: TPU, 2008, 77 p. (In Russ.)][Gormakov A.N., Voronina N.A. Design and Technology of Electronic Devices Devices. Printed Circuit Boards. Tomsk: TPU, 2006, 164 p. (In Russ.)][Murav’ev Yu. Features of the design and production of printed circuit boards on a metal base. Proizvodstvo elektroniki: Tehnologija, oborudovanija, materialy, 2010, no. 2, pp. 35–38. (In Russ.)][Kostin A.V. et al. Calculation of the temperature of printed conductors of boards installed on a metal base in on-board spacecraft equipment operating under vacuum conditions. VI Vserossijskaja nauchno-tehnicheskaja konferentsija «Aktual’nye problemy raketno-kosmicheskoj tehniki» («VI Kozlovskie chtenija»): sb. mater. Samara: Samarskij nauchnyj tsentr RAN, 2019, vol. 2, pp. 55–62. (In Russ.)][Kostin A.V., Shumskih I.Yu., Ruzanov A.V. Method for calculating the width of printed conductors of printed circuit boards on a metal base for spacecraft devices. XLIV Akademicheskie chtenija po kosmonavtike, posvjaschennye pamjati S.P. Koroleva i drugih vydajuschihsja otechestvennyh uchenyh – pionerov osvoenija kosmicheskogo prostranstva: sb. tezisov. Moscow: MGTU im. N.E. Baumana, 2020, vol. 2, pp. 264–267. (In Russ.)][Kostin A.V. Method for calculating the width of printed conductors of printed circuit boards on a metal base for spacecraft instruments with alternating current. Trudy MAI, 2020, no. 114, pp. 1–22. DOI: https://doi.org/10.34759/trd-2020-114-10 (In Russ.)]