These electron radiation dose profiles for Kapton in geosynchronous orbit were calculated using both AE8 MAX and ATS-6 models. At 40 keV, the peak in the dose-depth curve occurs at about 0.3 mil and does not penetrate significantly beyond 1 mil. At low energies, 10 keV, for instance, the dose might be close but only at about 0.1 mil. A combination of energies is the only way to reproduce the complete dose-depth curve.