Abstract
In this paper we examined, by using the PET film with thickness of 16-350$\mu\textrm{m}$, space charge focused on TSC peak at the slightly higher temperature than transition temperture of the glass. In the result we found that charge quantity, leaking current and absorbing current at TSC peak were rarely dependant its thickness at the Al foil contact electrde. In the case of Al evaporated electrode, the absorbing current was rarely dependent its thickness but TSC charge quantity at C-peak was increased directly proportional to its thickness and leaking current was decayed inversely proportional to its thickness. Also current-volteag characteristics showed sublinerar property under ohmic area at the Al evaporated electrode.