All data in this file accompanies the manuscript 'A mechanics-based approach to high-force capacity electroadhesives for robots', D.J. Levine, G.M. Iyer, R.D. Roosa, K.T. Turner & J.H. Pikul, 2022. All authors are associated with the University of Pennsylvania, Department of Mechanical Engineering & Applied Mechanics, Philadelphia, PA. All data in this file are represented in Figures 3 & 6 in the manuscript. All electroadhesive force capacity tests were run with clutch designs with a Parylene-C dielectric layer of thickness 14 microns, with a dielectric constant of 3.1. For additional information, please consult the manuscript or Supplementary Materials.