Fujitsu MB81C258-12 SC-DRAM (Static Column Dynamic Ram) by Fujitsu. Organisation: 256K x 1 (262,1445-Word x 1-Bit ) Access Time: 120 nS Package: 16-DIP Download Fujitsu MB81C258-12 .pdf datasheet: Status: PNOS (Perfect New Old Stock) Individually tested components: YES ... thorough 7 pass test routine. RoHS compliant: no