Prefix | Field Description | Notes
--- | --- | ---
B | Body dimensions | Body size (`X`x`Y`x`Z`) Height parameter `Z` may be omitted Prefix `B` may be omitted if the body size is the major dimension used to define the footprint
D | Diameter | Diameter of major axis for cylindrical component e.g. `D10mm` - 10mm diameter
H | Height | Height of component measured from PCB Body size `B` should be used in preference, where possible e.g. `H1.1mm` - component measures 1.1mm above PCB
L | Length | Length along major axis of component Body size `B` should be used in preference, where possible e.g. `L15.3mm` - 15mm length
W | Width | Width along minor axis of component Body size `B` should be used in preference, where possible e.g. `W4.75mm` - 4.75mm width
EP | Exposed pad dimensions | Packages that include a single exposed pad include the size of this pad. e.g. `EP2.4x3.6mm` - for a single 2.4mm x 3.6mm pad.
P | Pad pitch | Pitch (distance) between pins, pads or leads e.g. `P0.63mm` - 0.63mm pitch between pads
T | Thickness | Component thickness, where appropriate