Metallized ceramic substrate with mesa structure for voltage ramp-up of power modules Hélène Hourdequin, Lionel Laudebat, Marie-Laure Locatelli, Zarel Valdez-Nava and Pierre Bidan Eur. Phys. J. Appl. Phys., 87 2 (2019) 20903 Published online: 15 October 2019 DOI: 10.1051/epjap/2019180288