Memory Modules

1.Desk Top 168pin DIMM Module

Witek Stacked SDRAM Registered DIMM is built with patented proprietary technology to accommodate extended density on a single DIMM slot space. By adopting this technology, Witek is able to build SDRAM DIMM with capacity up to 1GB. Meanwhile, this is a very cost-effective way to build high-density module which uses the mainstream 128Mbit/256Mbit/512Mbit SDRAM instead of using the two rows double sides in one.

Our proprietary design consists of the following features:

FEATURES

• Equal Trace Length
  Data traces are precisely designed to ensure each data signal runs through the same distance for high frequency operation. The data paths run through the gold pins underneath and reach each SDRAM on both the mother and the stacked board with same distance and same impedance at the same time.
  
• Stacked Board Test Fixture
  A test fixture is designed for a full functional test on each mother and stacked board separately before they are assembled together. This is to ensure minimum rework effort on the module at the final stage so that quality and workmanship would be guaranteed.
• Heat Dispersion Layer
  There is a 0.3-0.5mm gap designed between PCB (7H9RC) and PCB (7H9Rcad) of the SDRAM for heat dispersion. This guarantees the SDRAM is able to maximize its performance under the normal working temperature within the specification.