Design Guidelines

General

Description should end in (FOOTPRINT)
Seperate power units: orient vertically, pins at +/- 0.4in with 0.15in length
Text should be 50 mil in general
Pin length, numbering, general naming:
- ICs: at least 0.15in
- Discretes: when omitting pin numbers is practical, keep short for maximum wiring flexibility
- Omitting pin numbers is allowed on discrete devices, but consider leaving the numbers for devices with nonstandard pinouts
- Name all pins. Hide names when the symbol graphic labels the pin instead (transistor BCE, etc)
- Prefer overbar for inverted pins with names, inversion circle for inverted pins without names. Don't combine the two!
In manufacturer libraries, name parts according to manufacturer naming scheme.
One part per footprint; specify footprint in Footprint field
For parts with a large number of variants (e.g. fixed-voltage regulators), a placeholder in the name is acceptable: LM1117DT-v.v
Prefer logical schematic to blank parts with names - e.g., use buffer symbol in buffers, not just pins named IN and OUT.
Include Manuf and PN lines.
Include bomtool BOM lines whenever possible.

Do not follow manufacturer naming
For single rail parts, name main supply V+ (not VCC, VDD)
For multi-rail parts, name main supply according to use when possible (VCORE, not V1.2)
Ground is GND, not VSS