The 3DSD4G08VS8613 from 3D Plus is a Space Qualified Memory with Storage Capacity 512 Mb, Bit Size 512 Mbit 8-Bit, 64 Mbit 8-Bit, Radiation Dose 80 krad (Si) (Read Mode), 25 krad (Si) (Write Mode), Mass 7.8 gms, Voltage 3 to 3.6 V. More details for 3DSD4G08VS8613 can be seen below.