Transistor and Diodes Conversion Chart

Summary: This document is a technical schematic and parts list for a "Transistor and Diodes Conversion Chart" circuit board (Module G230) designed by Digital Equipment Corporation.

• Schematic: The diagram illustrates an electronic circuit involving various transistors (such as DEC4258, DEC4258, and DEC2219), diodes (D664, D672, D664), resistors, and capacitors. It includes a current regulator section, input/output gates, and voltage rails (+5V and -15V).
• Physical Layout: A diagram showing the component placement on the board is provided, indicating the orientation of transistors, diodes, and various resistors.
• Parts List: The document includes a comprehensive Bill of Materials (BOM) listing 39 unique components required to build the module, specifying their descriptions, part numbers, and quantities.
• General Notes: The document specifies standard component values (1/4W, 5% resistors), notes that specific pins (C1 and N2) are for backplane current loops, and highlights that dotted components are not used in this specific module version.