Surface Flashover on Epoxy-Resin Printed Circuit Boards in Vacuum under Electron Irradiation
Abstract
This paper deals with the surface flashover characteristics of dielectric material in vacuum during electron beam irradiation in order to design adequately the conductive patterns on printed circuit boards used inside a spacecraft. The dielectric material, glass-fiber reinforced epoxy resin, and the electrodes printed on it were irradiated with electrons of the energy of 3-10 keV. DC high voltage was applied between the two electrodes during electron irradiation. The voltage was increased stepwise until the surface flashover occurred on the dielectric material.
We obtained the results that the surface flashover voltage increased with the insulation distance between the electrodes but electron irradiation made the flashover voltage lower. The flashover voltage characteristics were obtained as parameters of the electrode distance and the energy of the electron beam.- Publication:
-
IEEJ Transactions on Fundamentals and Materials
- Pub Date:
- 2010
- DOI:
- 10.1541/ieejfms.130.811
- Bibcode:
- 2010IJTFM.130..811F
- Keywords:
-
- surface flashover;
- electron irradiation;
- epoxy-resin printed circuit boards;
- vacuum;
- high voltage