For the 12GeV upgrade, the CLAS12 experiment has designed a Silicon Vertex Tracker (SVT) using single sided microstrip sensors fabricated by Hamamatsu. The sensors have graded angle design to minimize dead areas and a readout pitch of 156μm, with intermediate strip. Double sided SVT module hosts three daisy-chained sensors on each side with a full strip length of 33cm. There are 512 channels per module read out by four Fermilab Silicon Strip Readout (FSSR2) chips featuring data driven architecture, mounted on a rigid-flex hybrid. Modules are assembled on the barrel using unique cantilevered geometry to minimize the amount of material in the tracking volume. Design and performance of the SVT modules are presented, focusing on results of electrical measurements. •A Silicon Vertex Tracker has been designed for the central tracker of the CLAS12 experiment.•Using cantilevered module geometry allows minimizing amount of material in the tracking volume.•A dedicated Hybrid Flex Circuit Board has been developed to read out double sided module.•Module performance meets design goals of the CLAS12 Central Tracker.