MBM27C256A-15TV-G MBM27C256A-20 MBM27C256A-20 /-25 12.5V MBM27C256A-20-XGT MBM27C256A25 MBM27C256A-25 MBM27C256A-25 MBM27C256A-15 MBM27C256A-25-X MBM27C256AP-20 MBM27C256AP-20PD