We examine the nucleosynthesis in the innermost , neutrino-processed ejecta ( a few 10 ^ { -3 } M _ { \odot } ) of self-consistent , two-dimensional explosion models of core-collapse supernovae for six progenitor stars with different initial masses . Three models have initial masses near the low-mass end of the supernova range , 8.8 M _ { \odot } ( e8.8 ; electron-capture supernova ) , 9.6 M _ { \odot } ( z9.6 ) , and 8.1 M _ { \odot } ( u8.1 ) , with initial metallicities of 1 , 0 , and 10 ^ { -4 } times the solar metallicity , respectively . The other three are solar-metallicity models with initial masses of 11.2 M _ { \odot } ( s11 ) , 15 M _ { \odot } ( s15 ) , and 27 M _ { \odot } ( s27 ) . The low-mass models e8.8 , z9.6 , and u8.1 exhibit high production factors ( nucleosynthetic abundances relative to the solar ones ) of 100–200 for light trans-iron elements from Zn to Zr . This is associated with appreciable ejection of neutron-rich matter in these models . Remarkably , the nucleosynthetic outcomes for progenitors e8.8 and z9.6 are almost identical , including interesting productions of ^ { 48 } Ca and ^ { 60 } Fe , irrespective of their quite different ( O-Ne-Mg and Fe ) cores prior to collapse . In the more massive models s11 , s15 , and s27 , several proton-rich isotopes of light trans-iron elements , including the p -isotope ^ { 92 } Mo ( for s27 ) are made , up to production factors of \sim 30 . Both electron-capture and core-collapse supernovae near the low-mass end can therefore be dominant contributors to the Galactic inventory of light trans-iron elements from Zn to Zr and probably ^ { 48 } Ca and live ^ { 60 } Fe . The innermost ejecta of more massive supernovae may have only sub-dominant contributions to the chemical enrichment of the Galaxy except for ^ { 92 } Mo .