DDR4 BGA Interposers, DDR4 DRAM X16 Packages
N2115A - Keysight Technologies
The N2115A DDR4 BGA Interposers are soldered in between the DRAM and PC board or DIMM raw card where the DRAM would normally be soldered. They are designed with the PCB or DIMM foot print on the bottom side and the DRAM footprint on the top side. The signals from the memory controller chip and DRAM are then passed directly to the top side of the BGA probe adapter where they can be accessed with the oscilloscope probes.