2002 — Parastream Technologies, Inc.


Designed a replacement board for the Siemens SM304A – a 40-pin custom chip for the Korg BX-3 combo organ. The replacement board was a direct physical replacement for the original 40-pin DIP.


I handled the entire project, including reverse-engineering, characterizing, design, schematic capture, mechanical design, PCB design and layout, and datasheet generation. The schematic capture was done using OrCAD, and the 2-sided PC layout was done using OrCAD Layout Plus. The datasheet was composed in Microsoft Word, and some graphical elements were done in Visio.


  • 4000-series CMOS
  • SOIC Surface mounting on both PCB surfaces


You can click on the image to the right to see a larger image, and you can view the part’s datasheet.