{"sections":[{"heading":"Check the physical model","steps":["Confirm that the requested mode calculates the intended electrostatic or frequency-dependent quantity.","Set each relevant isolation layer's relative permittivity from the process information rather than assuming vacuum.","Review the environment above and below the model and the conductor/reference definitions.","When comparing another solver, match geometry, dielectric stack, grounding and matrix convention before comparing entries."]},{"heading":"Avoid changing unrelated calculations","paragraphs":["A magnetoquasistatic inductance calculation and an electrostatic capacitance calculation make different physical approximations. Changing a dielectric constant is not a general fix for an MQS inductance discrepancy.","A Maxwell capacitance matrix and a circuit representation need consistent sign/reference conventions. No conversion recipe is inferred from an unresolved comparison in the support history."]}],"canonical_url":"https://www.sun-magnetics.com/knowledge-base/inductex-dielectric-permittivity","url":"/knowledge-base/inductex-dielectric-permittivity","known_issues":[],"search_record":{"execution":false,"relatedProducts":[],"version_tags":["InductEx 8 preview"],"text":"Which dielectric settings matter for capacitance? Use the actual dielectric stack and extraction mode. Check EpsilonR and the environment above and below the structure. InductEx 8 beta/preview Troubleshooting Check the physical model Confirm that the requested mode calculates the intended electrostatic or frequency-dependent quantity. Set each relevant isolation layer's relative permittivity from the process information rather than assuming vacuum. Review the environment above and below the model and the conductor/reference definitions. When comparing another solver, match geometry, dielectric stack, grounding and matrix convention before comparing entries.  Avoid changing unrelated calculations A magnetoquasistatic inductance calculation and an electrostatic capacitance calculation make different physical approximations. Changing a dielectric constant is not a general fix for an MQS inductance discrepancy. A Maxwell capacitance matrix and a circuit representation need consistent sign/reference conventions. No conversion recipe is inferred from an unresolved comparison in the support history. ","id":"inductex-dielectric-permittivity","keywords":"","kind":"Troubleshooting","title":"Which dielectric settings matter for capacitance?","product":"InductEx"},"version":"8 beta/preview","id":"inductex-dielectric-permittivity","related":["/knowledge-base/inductex-parallel-plates","/knowledge-base/inductex-example-result-differences"],"downloads":[],"publication_status":"published","numerical_output":null,"provenance":{"execution_checks":[],"figure_evidence":[],"review_notes":["Support history informed this draft. Current-source guidance has been checked; a fresh walkthrough on the intended distributed release and product-owner review remain pending."],"scope":"Recorded inputs/builds only. Complete walkthrough and final-package acceptance remain separate.","verification_requirements":{"gui_method":"not-required-for-this-answer","status":"review-incomplete","illustrations":"not-required-for-this-answer","required":["technical-review","release-applicability","recovery"],"legacy_walkthrough_field":"pending retained; not evidence of a complete scenario"},"sources":[{"id":"support:SUP-010","section":"Generalised editorial finding; outcome qualification retained"},{"id":"inductex:docs/manual/ix_ldf.tex","section":"EpsilonR; EpsilonRAbove; EpsilonRBelow"}]},"title":"Which dielectric settings matter for capacitance?","type":"Troubleshooting","markdown_url":"/_functions/kbResource?path=markdown%2Finductex-dielectric-permittivity.md","summary":"Use the actual dielectric stack and extraction mode. Check EpsilonR and the environment above and below the structure.","product":"InductEx"}