A pcb-component definition models a single part that can be placed on a board. Components have ports, schematic symbols, a landpattern, and associated metadata.

Here is an example definition for an Epson FC-135 crystal oscillator:

pcb-component epson-fc-135 :
  name = "32.768kHz Crystal"
  description = "CRYSTAL 32.7680KHZ 7PF SMD"
  manufacturer = "Epson"
  mpn = "FC-135 32.768KA-AG0"

  port p : pin[[1 2]]

  val sym = crystal-sym(0)
  symbol = sym(p[1] => sym.p[1], p[2] => sym.p[2])
  landpattern = xtal-2-3215(p[1] => xtal-2-3215.p[1], p[2] => xtal-2-3215.p[2])
  reference-prefix = "Y"

  property(self.load-capacitance) = 7.0e-12
  property(self.shunt-capacitance) = 1.0e-12
  property(self.motional-capacitance) = 3.4e-15
  property(self.ESR) = 70.0e3
  property(self.frequency) = 32.768e3
  property(self.frequency-tolerance) = 20.0e-6
  property(self.max-drive-level) = 0.5e-6 


Here is the list of all of the statements you can use in a pcb-component :

Statement                 Description
descriptionDescription for the component
emodelEModel for the component
landpatternPhysical land-pattern/footprint for the component. Also mapped to component ports.
manufacturerManufacturer of the component
mpnManufacturer part number of the component
nameName of the component
pin-propertiesAn easy way to map component ports to pins on a landpattern.
portsPorts usable when this component is instantiated in a module
propertiesProperties of the component or its ports.
reference-prefixStart of the reference designator (default is "U").
supportsSupported peripherals for automated pin solving.
symbolSchematic symbol for the component. Mapped to the defined ports.