The 3DEE4M08CS4029 from 3D Plus is a Space Qualified Memory with Storage Capacity 512 Mb, Read Access Time 150 ns, Write Access Time 10 ms, Bit Size 512k x 8, 128k x 8 Bits, Mass 2.50 gms. Tags: Surface Mount. More details for 3DEE4M08CS4029 can be seen below.