To achieve an accurate PCB design, one that is easy to build, every part in your schematic
must have a physical representation with exact physical size. This is realized through
so-called footprints: drawings showing the outline and the pins of the parts.
The footprint naming convention in TINA Pro uses as a starting point the IPC-SM-
782A (Surface Mount Design and Land Pattern Standard) and the JEDEC standard
JESD30C (Descriptive Designation System for Semiconductor-Device Packages, see
http://www.jedec.org/download/search/jesd30c.pdf.). However, the libraries do not
conform to any given set of industry or manufacturer standards because standards have
difficulty keeping up to date when technology changes faster than the standards.
Generally, standards mirror a fixed set of data at a point in time, while new
manufacturing capabilities lead to ever-smaller new footprints with more and more pins.
We have already assigned default footprint names to all parts that represent real
components.
No comments:
Post a Comment